Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > CA Providers > Hematologists

Dr. Johnny K. Chang, MD

Accepting New Patients

(Johnny K. Chang, MD)

(556 Ratings)

Specializes in: Hematology (Blood Disorders), Medical Oncology, Adult Oncology and Adult Hematology

University of California, Los Angeles (UCLA), David Geffen School of Medicine

Professional interests include: non-Hodgkin's lymphoma, cancer, rectal problems, and more.

18133 Ventura Boulevard Suite 300
Tarzana, CA 91356

(818) 981-3818

Dr. Johnny K. Chang, MD is a hematologist in Tarzana, CA specializing in hematology (blood disorders), medical oncology, adult oncology and adult hematology. He graduated from University of California, Los Angeles (UCLA), David Geffen School of Medicine. Dr. Johnny K. Chang, MD is affiliated with Providence, Cedars-Sinai, Providence Cedars-Sinai Tarzana Medical Center and CEDARS-SINAI MEDICAL CARE FOUNDATION.

Office Locations

18133 Ventura Boulevard Suite 300
Tarzana, CA 91356

open_in_new

Some issues Dr. Johnny K. Chang, MD can help you with:

Anemia

Anemia is the most common blood disorder. It occurs when the body does not have enough red blood cells to carry oxygen to the tissues. Blood loss, insufficient red blood cell production, and red blood cell destruction are the three main causes of anemia. These issues may arise from such conditions as iron deficiency, heavy periods, ulcers, kidney disease, as well as some forms of cancer.

An individual with anemia will have the following symptoms: shortness of breath, weakness, dizziness, cold hands or feet, paleness, and irritability. Anemia is diagnosed when blood tests show low counts for hemoglobin, which is the protein responsible for carrying oxygen to different tissues throughout the body.

Treatments for anemia are dependent on the kind of anemia an individual has. For example, iron supplementation may correct iron deficiency anemia. For anemia caused by chronic kidney failure, chemotherapy treatments, and HIV/AIDS, a group of medications called erythropoiesis-stimulating agents may be prescribed.

Musculoskeletal Problems

The musculoskeletal system refers collectively to the bones, joints, ligaments, muscles, and nerves. It is what gives the body structure and movement. Because this system encompasses so much of the body, musculoskeletal problems are extremely varied and can happen almost anywhere. There are musculoskeletal problems that affect only the joints, those that affect the bones, those that affect tendons and ligaments, and those that can happen in any area of the body but cause pain and numbness.

Joint problems include bursitis and arthritis. Bursitis is the inflammation of a fluid-filled sac cushion on the outside of a joint, causing symptoms including pain and swelling. Arthritis is the inflammation and damage of a joint due to wear and tear or disease. There are several treatments for arthritis, but if the damage progresses far enough, joint replacement may be necessary. In joint replacement, a metal or plastic implant is surgically placed within the joint to make movement easier.

Bone problems include scoliosis, fractures, and osteoporosis. Scoliosis is a curvature of the spine, making the normally straight spine look like a 'C' or 'S.' It is treated with braces or surgery. Osteoporosis is a disease that causes bones to weaken and break easily. It's most common in women, especially older women. Fully half of all women over 65 have osteoporosis. Fractures are any break in the bone. They can be a simple crack or a severe and complicated shatter. Osteoporosis causes fractures in people who have it, but other causes are trauma (such as a fall) or overuse.

Tendon and ligament problems most often result from injury or overuse. Two good examples are ligament tears and tendonitis. The most common ligament tear is the ACL tear in the knee. This ligament supports and stabilizes the knee and is most often torn during sports activities. Tendonitis happens when a tendon, which connects muscles and bones together, becomes irritated and inflamed. This happens most often in older patients who push their bodies too far, leading to pain and swelling. Treatment for both tendon and ligament problems usually includes rest, ice, and supporting the area to let it heal.

Pain and numbness problems can be caused by overuse, disease, an injury, or a compressed nerve. Lower back pain and carpal tunnel syndrome are two of the most common conditions patients encounter. Lower back pain may be caused by sore muscles that have been overworked, or an injury to the disks separating the vertebrae in the spine. Lower back pain usually goes away on its own within a few days, but it may require medical treatment depending on the cause. Carpal tunnel syndrome occurs when the nerve at the base of the palm becomes trapped or pinched. Symptoms include tingling, pain, numbness, or weakness in the hand. Treatment involves rest and sometimes steroid injections.

Because the musculoskeletal system involves so much of the body, problems here can be incredibly varied in their type and severity. Some musculoskeletal problems will go away on their own or only require rest, while others may require medication, physical therapy, or even surgery.

Noteworthy Medicare Patient Procedures Performed by Dr. Johnny K. Chang, MD in 2023

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 5%

By Volume:

blood draw

lab tests

phlebotomy for lab tests

By Affordability:

bilirubin test

In 2023, among providers in related specialties within California, Dr. Johnny K. Chang, MD performed more blood draw, lab tests, and phlebotomy for lab tests procedures for Medicare patients than 95% of them and he also had a list price for bilirubin test that was lower than the list prices billed to Medicare by 95% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 10%

By Volume:

biological response modifier therapy

By Affordability:

prothrombin time test

reticulocyte count

In 2023, among providers in related specialties within California, Dr. Johnny K. Chang, MD performed more biological response modifier (BRM) therapy procedures for Medicare patients than 90% of them and he also had a list price for prothrombin time (PT) test, and reticulocyte count (immature red blood cell count) that was lower than the list prices billed to Medicare by 90% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 25%

By Volume:

intravenous chemotherapy

intravenous infusion

By Affordability:

blood count tests

CA 19-9 test

cancer antigen tests

carcinoembryonic antigen test

In 2012, among providers in related specialties within California, Dr. Johnny K. Chang, MD performed more intravenous (IV) chemotherapy, and intravenous (IV) infusion procedures for Medicare patients than 75% of them and he also had a list price for blood count tests, CA 19-9 test, cancer antigen tests, and carcinoembryonic antigen (CEA) test that was lower than the list prices billed to Medicare by 75% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Johnny K. Chang, MD treated as a hematologist in Tarzana, CA during 2012 were lab tests, blood draw, hospital care and inpatient care.

Volume of procedures performed by Dr. Johnny K. Chang, MD for Medicare patients.

biological response modifier (BRM) therapy	256
blood draw	1081
chemotherapy	256
doctor visit	1174
hospital care	574
inpatient care	574
lab tests	4935
minimally invasive procedures	256

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Johnny K. Chang, MD treated as a hematologist in Tarzana, CA during 2013 were lab tests, blood draw, hospital care and inpatient care.

Volume of procedures performed by Dr. Johnny K. Chang, MD for Medicare patients.

biological response modifier (BRM) therapy	304
blood draw	1402
chemotherapy	304
doctor visit	1349
hospital care	668
inpatient care	668
lab tests	7137
minimally invasive procedures	374
port flush	78

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Johnny K. Chang, MD.

**Gender**
Male	193
Female	239

**Ethnicity**
Non-Hispanic White	370
Black	0
Hispanic	22
Asian	22
Other	0
Native American	0

**Age**
From 65 to 74	158
From 75 to 84	164
85 and over	88
Less than 65	22

Conditions of Medicare patients treated by Dr. Johnny K. Chang, MD in 2013

Hypertension	73
High Cholesterol	63
Stroke	6
Ischemic Heart Disease	43
Depression	26
Chronic Kidney Disease	34
Asthma	10
Osteoperosis	13
Atrial Fibrilation	15
Heart Failure	28
Chronic Obstructive Pulmonary Disease	18
Diabetes	37
Dementia	14
Cancer	40

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Johnny K. Chang, MD treated as a hematologist in Tarzana, CA during 2014 were lab tests, blood draw, hospital care and inpatient care.

Volume of procedures performed by Dr. Johnny K. Chang, MD for Medicare patients.

aspiration	16
biological response modifier (BRM) therapy	352
blood draw	1222
bone marrow tests	31
chemotherapy	352
diagnostic procedures	15
doctor visit	1290
hospital care	673
inpatient care	673
lab tests	7814
minimally invasive procedures	423

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Johnny K. Chang, MD.

**Gender**
Male	190
Female	245

**Ethnicity**
Non-Hispanic White	372
Black	0
Hispanic	20
Asian	21
Other	0
Native American	0

**Age**
From 65 to 74	156
From 75 to 84	183
85 and over	78
Less than 65	18

Conditions of Medicare patients treated by Dr. Johnny K. Chang, MD in 2014

Hypertension	73
High Cholesterol	64
Stroke	9
Ischemic Heart Disease	46
Depression	23
Chronic Kidney Disease	29
Asthma	8
Osteoperosis	11
Atrial Fibrilation	17
Heart Failure	28
Chronic Obstructive Pulmonary Disease	19
Diabetes	35
Dementia	12
Cancer	40

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Johnny K. Chang, MD treated as a hematologist in Tarzana, CA during 2015 were lab tests, blood draw, hospital care and inpatient care.

Volume of procedures performed by Dr. Johnny K. Chang, MD for Medicare patients.

biological response modifier (BRM) therapy	173
blood draw	1062
chemotherapy	173
doctor visit	1291
hospital care	378
inpatient care	378
lab tests	6353
minimally invasive procedures	173

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Johnny K. Chang, MD.

**Gender**
Male	340
Female	492

**Ethnicity**
Non-Hispanic White	728
Black	0
Hispanic	0
Asian	38
Other	26
Native American	0

**Age**
From 65 to 74	308
From 75 to 84	326
85 and over	150
Less than 65	48

Conditions of Medicare patients treated by Dr. Johnny K. Chang, MD in 2015

Hypertension	74
High Cholesterol	66
Stroke	8
Ischemic Heart Disease	45
Depression	21
Chronic Kidney Disease	30
Asthma	12
Osteoperosis	15
Atrial Fibrilation	14
Heart Failure	24
Chronic Obstructive Pulmonary Disease	15
Diabetes	30
Dementia	10
Cancer	43

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Johnny K. Chang, MD treated as a hematologist in Tarzana, CA during 2016 were lab tests, blood draw, minimally invasive procedures and chemotherapy.

Volume of procedures performed by Dr. Johnny K. Chang, MD for Medicare patients.

biological response modifier (BRM) therapy	252
blood draw	1188
chemotherapy	252
doctor visit	1374
hospital care	192
inpatient care	192
lab tests	7444
minimally invasive procedures	298

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Johnny K. Chang, MD.

**Gender**
Male	175
Female	242

**Ethnicity**
Non-Hispanic White	371
Black	0
Hispanic	17
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	158
From 75 to 84	162
85 and over	74
Less than 65	23

Conditions of Medicare patients treated by Dr. Johnny K. Chang, MD in 2016

Hypertension	73
High Cholesterol	69
Stroke	8
Ischemic Heart Disease	40
Depression	21
Chronic Kidney Disease	32
Asthma	16
Osteoperosis	13
Atrial Fibrilation	14
Heart Failure	23
Chronic Obstructive Pulmonary Disease	14
Diabetes	30
Dementia	10
Cancer	44

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Johnny K. Chang, MD treated as a hematologist in Tarzana, CA during 2017 were lab tests, blood draw, minimally invasive procedures and hospital care.

Volume of procedures performed by Dr. Johnny K. Chang, MD for Medicare patients.

biological response modifier (BRM) therapy	147
blood draw	452
chemotherapy	147
doctor visit	1450
hospital care	260
inpatient care	260
lab tests	7981
minimally invasive procedures	269

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Johnny K. Chang, MD.

**Gender**
Male	189
Female	282

**Ethnicity**
Non-Hispanic White	406
Black	0
Hispanic	18
Asian	0
Other	22
Native American	0

**Age**
From 65 to 74	183
From 75 to 84	181
85 and over	90
Less than 65	17

Conditions of Medicare patients treated by Dr. Johnny K. Chang, MD in 2017

Hypertension	74
High Cholesterol	62
Stroke	7
Ischemic Heart Disease	38
Depression	23
Chronic Kidney Disease	38
Asthma	7
Osteoperosis	17
Atrial Fibrilation	14
Heart Failure	25
Chronic Obstructive Pulmonary Disease	14
Diabetes	32
Dementia	13
Cancer	41

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Johnny K. Chang, MD treated as a hematologist in Tarzana, CA during 2018 were lab tests, blood draw, minimally invasive procedures and hospital care.

Volume of procedures performed by Dr. Johnny K. Chang, MD for Medicare patients.

biological response modifier (BRM) therapy	195
blood draw	1324
chemotherapy	195
doctor visit	1497
hospital care	205
inpatient care	205
lab tests	4885
minimally invasive procedures	290

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Johnny K. Chang, MD.

**Gender**
Male	216
Female	312

**Ethnicity**
Non-Hispanic White	455
Black	12
Hispanic	16
Asian	20
Other	25
Native American	0

**Age**
From 65 to 74	199
From 75 to 84	196
85 and over	109
Less than 65	24

Conditions of Medicare patients treated by Dr. Johnny K. Chang, MD in 2018

Hypertension	74
High Cholesterol	72
Stroke	6
Ischemic Heart Disease	43
Depression	24
Chronic Kidney Disease	38
Asthma	7
Osteoperosis	18
Atrial Fibrilation	15
Heart Failure	22
Chronic Obstructive Pulmonary Disease	14
Diabetes	32
Dementia	11
Cancer	42

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Johnny K. Chang, MD treated as a hematologist in Tarzana, CA during 2019 were lab tests, blood draw, minimally invasive procedures and hospital care.

Volume of procedures performed by Dr. Johnny K. Chang, MD for Medicare patients.

biological response modifier (BRM) therapy	244
blood draw	1223
chemotherapy	244
doctor visit	1545
hospital care	245
inpatient care	245
lab tests	4002
minimally invasive procedures	338

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Johnny K. Chang, MD.

**Gender**
Male	235
Female	340

**Ethnicity**
Non-Hispanic White	495
Black	13
Hispanic	19
Asian	20
Other	28
Native American	0

**Age**
From 65 to 74	220
From 75 to 84	210
85 and over	117
Less than 65	28

Conditions of Medicare patients treated by Dr. Johnny K. Chang, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	44
Depression	26
Chronic Kidney Disease	42
Asthma	8
Osteoperosis	23
Atrial Fibrilation	13
Heart Failure	23
Chronic Obstructive Pulmonary Disease	13
Diabetes	34
Dementia	12
Cancer	39

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Johnny K. Chang, MD treated as a hematologist in Tarzana, CA during 2020 were lab tests, blood draw, minimally invasive procedures and chemotherapy.

Volume of procedures performed by Dr. Johnny K. Chang, MD for Medicare patients.

biological response modifier (BRM) therapy	291
blood draw	1372
chemotherapy	291
doctor visit	1569
hospital care	27
inpatient care	27
lab tests	4423
minimally invasive procedures	385
thyroid function tests	12

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Johnny K. Chang, MD.

**Gender**
Male	230
Female	325

**Ethnicity**
Non-Hispanic White	479
Black	0
Hispanic	0
Asian	24
Other	26
Native American	0

**Age**
From 65 to 74	222
From 75 to 84	211
85 and over	101
Less than 65	21

Conditions of Medicare patients treated by Dr. Johnny K. Chang, MD in 2020

Hypertension	75
High Cholesterol	71
Stroke	7
Ischemic Heart Disease	43
Depression	26
Chronic Kidney Disease	38
Asthma	8
Osteoperosis	23
Atrial Fibrilation	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	14
Diabetes	31
Dementia	12
Cancer	37

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Johnny K. Chang, MD treated as a hematologist in Tarzana, CA during 2021 were lab tests, blood draw, minimally invasive procedures and chemotherapy.

Volume of procedures performed by Dr. Johnny K. Chang, MD for Medicare patients.

biological response modifier (BRM) therapy	280
blood draw	1355
chemotherapy	280
doctor visit	1617
hospital care	30
inpatient care	30
lab tests	4824
minimally invasive procedures	391

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Johnny K. Chang, MD.

**Gender**
Male	267
Female	399

**Ethnicity**
Non-Hispanic White	589
Black	0
Hispanic	0
Asian	23
Other	33
Native American	0

**Age**
From 65 to 74	257
From 75 to 84	276
85 and over	110
Less than 65	23

Conditions of Medicare patients treated by Dr. Johnny K. Chang, MD in 2021

Hypertension	73
High Cholesterol	75
Stroke	5
Ischemic Heart Disease	42
Depression	23
Chronic Kidney Disease	39
Asthma	8
Osteoperosis	28
Atrial Fibrilation	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	12
Diabetes	33
Dementia	10
Cancer	37

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Johnny K. Chang, MD treated as a hematologist in Tarzana, CA during 2022 were lab tests, blood draw, minimally invasive procedures and chemotherapy.

Volume of procedures performed by Dr. Johnny K. Chang, MD for Medicare patients.

biological response modifier (BRM) therapy	279
blood draw	1451
chemotherapy	279
doctor visit	1758
lab tests	5338
minimally invasive procedures	371

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Johnny K. Chang, MD.

**Gender**
Male	262
Female	420

**Ethnicity**
Non-Hispanic White	596
Black	11
Hispanic	15
Asian	21
Other	39
Native American	0

**Age**
From 65 to 74	256
From 75 to 84	277
85 and over	130
Less than 65	19

Conditions of Medicare patients treated by Dr. Johnny K. Chang, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	37
Depression	22
Chronic Kidney Disease	27
Asthma	9
Osteoperosis	37
Atrial Fibrilation	19
Heart Failure	17
Chronic Obstructive Pulmonary Disease	18
Diabetes	32
Dementia	6
Cancer	38

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Johnny K. Chang, MD for Medicare patients.

The highest averages for the top procedures that Dr. Johnny K. Chang, MD treated as a hematologist in Tarzana, CA were lab tests, blood draw, hospital care and inpatient care.

aspiration	16
biological response modifier (BRM) therapy	252
blood draw	1193
bone marrow tests	31
chemotherapy	252
diagnostic procedures	15
doctor visit	1446
hospital care	325
inpatient care	325
lab tests	5921
minimally invasive procedures	324
thyroid function tests	12

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Johnny K. Chang, MD.

**Gender**
Male	208
Female	299

**Ethnicity**
Black / African American	3
Asian / Pacific Islander	17
Non-Hispanic White	441
Native American / Alaskan Native	0
Hispanic	11
Other	19

**Age**
75 to 84	198
85 and over	95
Less than 65	22
65 to 74	192

Average of Total of Conditions of Medicare patients treated by Dr. Johnny K. Chang, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Johnny K. Chang, MD treated were hypertension, high cholesterol, ischemic heart disease and cancer.

Hypertension	67
High Cholesterol	62
Stroke	6
Ischemic Heart Disease	38
Depression	21
Chronic Kidney Disease	31
Asthma	8
Osteoporosis	18
Heart Failure	20
Chronic Obstructive Pulmonary Disease	13
Diabetes	29
Atrial Fibrillation	13
Dementia	10
Cancer	36

Education & Training

Dr. Johnny K. Chang, MD graduated from University of California, Los Angeles (UCLA), David Geffen School of Medicine. He completed residency at Harbor-UCLA Medical Center. He is certified by the American Board of Internal Medicine, Medical Oncology and has a state license in California.

Medical School: University of California, Los Angeles (UCLA), David Geffen School of Medicine

Residency: Harbor-UCLA Medical Center (2001)

Board Certification: American Board of Internal Medicine, Medical Oncology

Licensed In: California

Affiliations & Hospitals

Dr. Johnny K. Chang, MD is associated with these hospitals and organizations:

Providence

Cedars-Sinai

Providence Cedars-Sinai Tarzana Medical Center

CEDARS-SINAI MEDICAL CARE FOUNDATION

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Johnny K. Chang, MD appears to accept the following insurance providers: CIGNA PPO, CIGNA HMO, Humana Medicare Advantage, Medicare Advantage, MultiPlan PPO, MultiPlan, Coventry PPO, United Healthcare PPO, United Healthcare HMO, Blue Shield of California, Railroad Medicare, United Healthcare, Anthem Blue Cross HMO, Humana, Anthem Blue Cross PPO, Cigna, Medi-Cal, Anthem, Health Net PPO, Health Net HMO, HealthSmart PPO, HealthSmart, Optima Health, First Health, Beech Street, Aetna PPO, Aetna HMO, Aetna ACO, Aids Healthcare Foundation HMO, Gold Coast PPO, Aids Healthcare Foundation PPO, Blue Shield California HMO, Health Net MAH, Aids Healthcare Foundation MAH, CareMore HMO, Blue Shield California PPO, Medicare MCR, Blue Shield California MAH and CareMore MAH.

Insurance Accepted by Provider includes:

According to our sources, Dr. Johnny K. Chang, MD accepts the following insurance providers:

CIGNA PPO

CIGNA HMO

Humana Medicare Advantage

Medicare Advantage

MultiPlan PPO

MultiPlan

Coventry PPO

United Healthcare PPO

United Healthcare HMO

Blue Shield of California

Railroad Medicare

United Healthcare

Anthem Blue Cross HMO

Humana

Anthem Blue Cross PPO

Cigna

Medi-Cal

Anthem

Health Net PPO

Health Net HMO

HealthSmart PPO

HealthSmart

Optima Health

First Health

Beech Street

Aetna PPO

Aetna HMO

Aetna ACO

Aids Healthcare Foundation HMO

Gold Coast PPO

Aids Healthcare Foundation PPO

Blue Shield California HMO

Health Net MAH

Aids Healthcare Foundation MAH

CareMore HMO

Blue Shield California PPO

Medicare MCR

Blue Shield California MAH

CareMore MAH

Ratings & Reviews

Dr. Johnny K. Chang, MD has an exceptional overall rating with an average of 4.89 out of 5 stars based on 556 ratings. We collect ratings and reviews of Dr. Johnny K. Chang, MD from all over the web to help you find the right in Tarzana, CA.

4.89

Overall Rating

(556 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2024-05-11

Patient verified via Press Ganey

Dr Chang is exceptional! He worked me into his busy schedule last minute for bloodwork to make sure surgery would be acceptable. He is organized, explains things well and very compassionate and reassuring!

Overall Rating: 5.0 2025-11-08

Patient verified via Press Ganey

Dr. Chang is very informed and up to date about my health issue. He reviews past and current progress and what is planned for the future. He is patient with questions.

Overall Rating: 5.0 2025-01-09

Patient verified via Press Ganey

Dr. Chang is an excellent physician. Very thorough, professional and empathetic.. I have been going to him for years and have been very satisfied with my medical care.

Overall Rating: 5.0 2024-05-13

Patient verified via Press Ganey

Very knowledgable, very informed about my history and progress and alternative possibilities for treatment it knew what is best for me. Very caring, great doctor

Overall Rating: 5.0 2024-04-30

Patient verified via Press Ganey

Dr. Chang explains everything very well. He will even f/u by phone with results.

Overall Rating: 5.0 2025-05-06

Patient verified via Press Ganey

I have been a patient of Dr. Chang for 20 years and hope to be for another 20

Overall Rating: 5.0 2025-03-03

Patient verified via Press Ganey

Very flexible and gave me options so I could participate in my own treatment.

Overall Rating: 4.0 2024-11-25

Patient verified via Press Ganey

Dr Chang is always quick but to the point and with a great treatment plan.

Overall Rating: 5.0 2025-11-07

Patient verified via Press Ganey

Dr. Chang is amazing. This was my first visit and know I'm in good hands.

Overall Rating: 5.0 2024-06-27

Patient verified via Press Ganey

Today was an infusion day -- so it's all about life in the Chemo Lounge.

To see all 556 reviews for Dr. Johnny K. Chang, MD, view their full profile.

General Payments

These charts describe general payments received by Dr. Johnny K. Chang, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Lilly USA, LLC	$833,488 VERZENIO $334,043	CYRAMZA $181,662	RETEVMO $51,753	ALIMTA $38,100	PORTRAZZA $27,253	Other $200,676
AstraZeneca Pharmaceuticals LP	$204,811 CALQUENCE $146,001	IMFINZI $28,700	TAGRISSO $24,885	LYNPARZA $5	$5,220
Pfizer Inc.	$41,252 XALKORI $27,063	IBRANCE $10,666	TOVIAZ $12	BOSULIF $8	SUTENT $3	Other $3,500
Celgene Corporation	$10,938 Abraxane $10,938
Alexion Pharmaceuticals, Inc.	$1,333 SOLIRIS $1,333
Other	$3,193 ZYKADIA $1,000	KEYTRUDA $450	Neulasta $425	G8 Column $374	Zydelig $250	Other $694

**Types of Payments**
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$833,494
Travel and Lodging	$145,325
Consulting Fee	$81,845
Food and Beverage	$33,687
Gift	$374
Other	$292

Biography

Dr. Johnny Chang is a physician who specializes in adult hematology, adult oncology, and medical oncology. In addition to English, he speaks Min Nan. Dr. Chang's areas of expertise include the following: gastrointestinal cancer, tracheal cancer, and tumor. His professional affiliations include Providence and Cedars-Sinai. He graduated from the University of California, Los Angeles (UCLA), David Geffen School of Medicine and then he performed his residency at Harbor-UCLA Medical Center. Dr. Chang is rated 5.0 stars (out of 5) by his patients. He can take Anthem, Blue California, HealthSmart, and more. He has received the distinction of Southern California Super Doctors. Yext reports that Dr. Chang is accepting new patients at his office in Tarzana, CA.