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Dr. David Chan, MD

Accepting New Patients

(6 Ratings)

Specializes in: 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.

3285 Skypark Drive
Torrance, CA 90505

(310) 750-3300

Dr. David Chan, MD is a medical oncologist in Torrance, CA specializing in medical oncology, adult oncology and adult hematology. He graduated from University of California, Los Angeles (UCLA), David Geffen School of Medicine. Dr. David Chan, MD is affiliated with Providence, Torrance Memorial, Providence Little Company of Mary Medical Center Torrance, U.S. Department of Veterans Affairs, TORRANCE HEALTH ASSOCIATION INC and Torrance Memorial Physician Network.

Office Locations

Torrance Memorial

3285 Skypark Drive
Torrance, CA 90505

(310) 325-1060

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3350 La Jolla Village Drive San Diego Vahcs (664)
San Diego, CA 92161

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Providence Little Company of Mary Medical Center Torrance

514 North Prospect Avenue Floor 4
Redondo Beach, CA 90277

(310) 750-3300

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Some issues Dr. David Chan, MD can help you with:

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.

In The News

“"Immunotherapy for cancer treatment is exploding," said Dr. David Chan, program director for oncology at Torrance Memorial Medical Center in California.”—"The Value and Cost of Immunotherapy Cancer Treatments", Huff Post, October 2016

“This free program, presented by the South Bay Survivorship Consortium, will be held on Tuesday, May 12, at the Torrance Memorial Medical Conference Center, from 6 to 8 p.m. Featured speakers...”—"COMMUNITY CALENDAR: Beginning May 7", Daily Breeze, May 2015

Noteworthy Medicare Patient Procedures Performed by Dr. David Chan, MD in 2023

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

Top 5%

By Affordability:

blood tests

lab tests

In 2023, Dr. David Chan, MD had a list price for blood tests, and lab tests that was lower than the list prices billed to Medicare by 95% of providers in related specialties within California. 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:

antineoplastic hormone therapy

creatinine blood test

By Affordability:

antineoplastic hormone therapy

blood count tests

complete blood count

creatinine blood test

creatinine test

intravenous infusion therapy

intravenous infusion

kidney function tests

In 2023, among providers in related specialties within California, Dr. David Chan, MD performed more antineoplastic hormone therapy, and creatinine blood test procedures for Medicare patients than 90% of them and he also had a list price for antineoplastic hormone therapy, blood count tests, complete blood count (CBC), creatinine blood test, creatinine test, intravenous infusion therapy, intravenous (IV) infusion, and kidney function tests 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:

minimally invasive procedures

By Affordability:

hormone therapy

In 2012, among providers in related specialties within California, Dr. David Chan, MD performed more minimally invasive procedures procedures for Medicare patients than 75% of them and he also had a list price for hormone therapy 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. David Chan, MD treated as a medical oncologist in Torrance, CA during 2012 were lab tests, blood draw, chemotherapy and biological response modifier (BRM) therapy.

Volume of procedures performed by Dr. David Chan, MD for Medicare patients.

abdominal imaging	39
biological response modifier (BRM) therapy	255
blood draw	683
chemotherapy	255
CT scan	39
doctor visit	553
hospital care	74
inpatient care	74
lab tests	3215
minimally invasive procedures	252
pelvic imaging	39

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. David Chan, MD treated as a medical oncologist in Torrance, CA during 2013 were lab tests, blood draw, minimally invasive procedures and chemotherapy.

Volume of procedures performed by Dr. David Chan, MD for Medicare patients.

biological response modifier (BRM) therapy	301
blood draw	572
chemotherapy	301
doctor visit	662
hospital care	35
inpatient care	35
lab tests	1640
minimally invasive procedures	343

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. David Chan, MD.

**Gender**
Male	54
Female	237

**Ethnicity**
Non-Hispanic White	212
Black	0
Hispanic	0
Asian	45
Other	13
Native American	0

**Age**
From 65 to 74	140
From 75 to 84	115
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. David Chan, MD in 2013

Hypertension	63
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	23
Depression	13
Chronic Kidney Disease	14
Asthma	6
Osteoperosis	17
Atrial Fibrilation	5
Heart Failure	9
Chronic Obstructive Pulmonary Disease	8
Diabetes	24
Dementia	4
Cancer	75

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. David Chan, MD treated as a medical oncologist in Torrance, CA during 2014 were blood draw, lab tests, chemotherapy and biological response modifier (BRM) therapy.

Volume of procedures performed by Dr. David Chan, MD for Medicare patients.

biological response modifier (BRM) therapy	231
blood draw	660
chemotherapy	231
doctor visit	677
hospital care	35
inpatient care	35
lab tests	383
minimally invasive procedures	231

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. David Chan, MD.

**Gender**
Male	71
Female	231

**Ethnicity**
Non-Hispanic White	224
Black	0
Hispanic	0
Asian	49
Other	12
Native American	0

**Age**
From 65 to 74	148
From 75 to 84	115
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. David Chan, MD in 2014

Hypertension	59
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	25
Depression	15
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	12
Atrial Fibrilation	7
Heart Failure	9
Chronic Obstructive Pulmonary Disease	9
Diabetes	25
Dementia	6
Cancer	75

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. David Chan, MD treated as a medical oncologist in Torrance, CA during 2015 were lab tests, blood draw, minimally invasive procedures and chemotherapy.

Volume of procedures performed by Dr. David Chan, MD for Medicare patients.

biological response modifier (BRM) therapy	276
blood draw	588
chemotherapy	276
doctor visit	621
hospital care	27
inpatient care	27
lab tests	897
minimally invasive procedures	342
preventive care	55
vaccines	55

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. David Chan, MD.

**Gender**
Male	124
Female	488

**Ethnicity**
Non-Hispanic White	424
Black	34
Hispanic	28
Asian	102
Other	24
Native American	0

**Age**
From 65 to 74	314
From 75 to 84	226
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. David Chan, MD in 2015

Hypertension	62
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	26
Depression	15
Chronic Kidney Disease	20
Asthma	9
Osteoperosis	10
Atrial Fibrilation	6
Heart Failure	9
Chronic Obstructive Pulmonary Disease	11
Diabetes	26
Dementia	7
Cancer	75

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. David Chan, MD treated as a medical oncologist in Torrance, CA during 2016 were lab tests, blood draw, minimally invasive procedures and chemotherapy.

Volume of procedures performed by Dr. David Chan, MD for Medicare patients.

biological response modifier (BRM) therapy	278
blood draw	635
chemotherapy	278
doctor visit	867
hospital care	53
inpatient care	53
lab tests	992
minimally invasive procedures	332
port flush	41
preventive care	58
vaccines	58

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. David Chan, MD.

**Gender**
Male	71
Female	287

**Ethnicity**
Non-Hispanic White	254
Black	19
Hispanic	17
Asian	54
Other	14
Native American	0

**Age**
From 65 to 74	175
From 75 to 84	139
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. David Chan, MD in 2016

Hypertension	61
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	22
Depression	14
Chronic Kidney Disease	22
Asthma	11
Osteoperosis	13
Atrial Fibrilation	9
Heart Failure	8
Chronic Obstructive Pulmonary Disease	10
Diabetes	23
Dementia	8
Cancer	75

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. David Chan, MD treated as a medical oncologist in Torrance, CA during 2017 were lab tests, blood draw, minimally invasive procedures and chemotherapy.

Volume of procedures performed by Dr. David Chan, MD for Medicare patients.

biological response modifier (BRM) therapy	205
blood draw	557
chemotherapy	205
doctor visit	919
hospital care	19
inpatient care	19
lab tests	879
minimally invasive procedures	269
preventive care	12
vaccines	12

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. David Chan, MD.

**Gender**
Male	45
Female	310

**Ethnicity**
Non-Hispanic White	250
Black	20
Hispanic	18
Asian	52
Other	0
Native American	0

**Age**
From 65 to 74	184
From 75 to 84	124
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. David Chan, MD in 2017

Hypertension	62
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	22
Depression	14
Chronic Kidney Disease	23
Asthma	6
Osteoperosis	14
Atrial Fibrilation	6
Heart Failure	8
Chronic Obstructive Pulmonary Disease	9
Diabetes	21
Dementia	8
Cancer	75

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. David Chan, MD treated as a medical oncologist in Torrance, CA during 2018 were lab tests, blood draw, minimally invasive procedures and hormone therapy.

Volume of procedures performed by Dr. David Chan, MD for Medicare patients.

biological response modifier (BRM) therapy	202
blood draw	544
chemotherapy	202
doctor visit	955
hormone therapy	218
hospital care	18
inpatient care	18
lab tests	921
minimally invasive procedures	297
preventive care	11
vaccines	11

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. David Chan, MD.

**Gender**
Male	45
Female	306

**Ethnicity**
Non-Hispanic White	251
Black	22
Hispanic	17
Asian	44
Other	0
Native American	0

**Age**
From 65 to 74	186
From 75 to 84	130
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. David Chan, MD in 2018

Hypertension	61
High Cholesterol	51
Stroke	4
Ischemic Heart Disease	24
Depression	16
Chronic Kidney Disease	26
Asthma	8
Osteoperosis	22
Atrial Fibrilation	7
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	21
Dementia	7
Cancer	75

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. David Chan, MD treated as a medical oncologist in Torrance, CA during 2019 were lab tests, minimally invasive procedures, hormone therapy and blood draw.

Volume of procedures performed by Dr. David Chan, MD for Medicare patients.

biological response modifier (BRM) therapy	179
blood draw	236
chemotherapy	179
doctor visit	1204
hormone therapy	268
lab tests	1030
minimally invasive procedures	329
preventive care	81
vaccines	13

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. David Chan, MD.

**Gender**
Male	36
Female	289

**Ethnicity**
Non-Hispanic White	237
Black	12
Hispanic	0
Asian	48
Other	15
Native American	0

**Age**
From 65 to 74	179
From 75 to 84	119
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. David Chan, MD in 2019

Hypertension	59
High Cholesterol	53
Stroke	5
Ischemic Heart Disease	20
Depression	19
Chronic Kidney Disease	20
Asthma	8
Osteoperosis	24
Atrial Fibrilation	5
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	21
Dementia	9
Cancer	75

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. David Chan, MD treated as a medical oncologist in Torrance, CA during 2020 were lab tests, minimally invasive procedures, hormone therapy and chemotherapy.

Volume of procedures performed by Dr. David Chan, MD for Medicare patients.

biological response modifier (BRM) therapy	200
blood draw	21
chemotherapy	200
doctor visit	1252
hormone therapy	306
lab tests	1100
minimally invasive procedures	360

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. David Chan, MD.

**Gender**
Male	28
Female	318

**Ethnicity**
Non-Hispanic White	250
Black	14
Hispanic	15
Asian	51
Other	0
Native American	0

**Age**
From 65 to 74	175
From 75 to 84	137
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. David Chan, MD in 2020

Hypertension	57
High Cholesterol	56
Stroke	4
Ischemic Heart Disease	19
Depression	18
Chronic Kidney Disease	23
Asthma	6
Osteoperosis	25
Atrial Fibrilation	5
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	21
Dementia	9
Cancer	75

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. David Chan, MD treated as a medical oncologist in Torrance, CA during 2021 were lab tests, minimally invasive procedures, hormone therapy and chemotherapy.

Volume of procedures performed by Dr. David Chan, MD for Medicare patients.

biological response modifier (BRM) therapy	243
blood draw	30
chemotherapy	243
doctor visit	1269
hormone therapy	285
lab tests	1154
minimally invasive procedures	416

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. David Chan, MD.

**Gender**
Male	21
Female	332

**Ethnicity**
Non-Hispanic White	253
Black	14
Hispanic	18
Asian	55
Other	0
Native American	0

**Age**
From 65 to 74	172
From 75 to 84	145
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. David Chan, MD in 2021

Hypertension	60
High Cholesterol	58
Stroke	4
Ischemic Heart Disease	24
Depression	19
Chronic Kidney Disease	25
Asthma	6
Osteoperosis	26
Atrial Fibrilation	8
Heart Failure	8
Chronic Obstructive Pulmonary Disease	6
Diabetes	21
Dementia	9
Cancer	75

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. David Chan, MD treated as a medical oncologist in Torrance, CA during 2022 were lab tests, minimally invasive procedures, hormone therapy and chemotherapy.

Volume of procedures performed by Dr. David Chan, MD for Medicare patients.

biological response modifier (BRM) therapy	142
blood draw	37
chemotherapy	142
doctor visit	1119
hormone therapy	236
lab tests	1014
minimally invasive procedures	291

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. David Chan, MD.

**Gender**
Male	24
Female	334

**Ethnicity**
Non-Hispanic White	258
Black	0
Hispanic	17
Asian	56
Other	15
Native American	0

**Age**
From 65 to 74	173
From 75 to 84	151
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. David Chan, MD in 2022

Hypertension	67
High Cholesterol	72
Stroke	7
Ischemic Heart Disease	15
Depression	18
Chronic Kidney Disease	13
Asthma	6
Osteoperosis	32
Atrial Fibrilation	11
Heart Failure	6
Chronic Obstructive Pulmonary Disease	8
Diabetes	19
Dementia	3
Cancer	75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. David Chan, MD for Medicare patients.

The highest averages for the top procedures that Dr. David Chan, MD treated as a medical oncologist in Torrance, CA were lab tests, blood draw, minimally invasive procedures and hormone therapy.

abdominal imaging	39
biological response modifier (BRM) therapy	228
blood draw	414
chemotherapy	228
CT scan	39
doctor visit	918
hormone therapy	262
hospital care	37
inpatient care	37
lab tests	1202
minimally invasive procedures	314
pelvic imaging	39
preventive care	43
vaccines	29

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. David Chan, MD.

**Gender**
Male	47
Female	284

**Ethnicity**
Black / African American	12
Asian / Pacific Islander	50
Non-Hispanic White	237
Hispanic	11
Native American / Alaskan Native	0
Other	8

**Age**
75 to 84	127
85 and over	0
Less than 65	0
65 to 74	167

Average of Total of Conditions of Medicare patients treated by Dr. David Chan, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. David Chan, MD treated were cancer, hypertension, high cholesterol and diabetes.

Hypertension	55
High Cholesterol	49
Stroke	2
Ischemic Heart Disease	20
Depression	14
Chronic Kidney Disease	18
Asthma	6
Osteoporosis	17
Heart Failure	7
Chronic Obstructive Pulmonary Disease	7
Diabetes	20
Atrial Fibrillation	6
Cancer	68
Dementia	6

Education & Training

Dr. David Chan, MD graduated from University of California, Los Angeles (UCLA), David Geffen School of Medicine. He completed residency at Stanford Hospital & Clinics. 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: Stanford Hospital & Clinics

Board Certification: American Board of Internal Medicine, Medical Oncology

Licensed In: California

Affiliations & Hospitals

Dr. David Chan, MD is associated with these hospitals and organizations:

Providence

Torrance Memorial

Providence Little Company of Mary Medical Center Torrance

U.S. Department of Veterans Affairs

TORRANCE HEALTH ASSOCIATION INC

Torrance Memorial Physician Network

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. David Chan, MD appears to accept the following insurance providers: Aetna PPO, CCN PPO, Interplan PPO and First Choice PPO.

Insurance Accepted by Provider includes:

According to our sources, Dr. David Chan, MD accepts the following insurance providers:

Aetna PPO

CCN PPO

Interplan PPO

First Choice PPO

Ratings & Reviews

Dr. David Chan, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 6 ratings. We collect ratings and reviews of Dr. David Chan, MD from all over the web to help you find the right in Torrance, CA.

Overall Rating

(6 Ratings)

Leave a Review

Reviews Left On DocSpot

Overall Rating: 5.0 2025-10-07

Blessed to found/be a patient of Dr Chan. I am well taken care of by him and his team, doubt I will be cancer-free without his care. Thank you

General Payments

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

**Payments by Company**
Novartis Pharmaceuticals Corporation	$3,263 KISQALI $2,837	AFINITOR $187	NON BRAND $23	SANDOSTATIN LAR $15	ZYKADIA $14	Other $188
Genentech USA, Inc.	$505 TARCEVA $186	Kadcyla $71	Herceptin $61	Erivedge $46	Zelboraf $31	Other $110
E.R. Squibb & Sons, L.L.C.	$237 EMPLICITI $113	OPDIVO $52	YERVOY $50	ERBITUX $11	SPRYCEL $10
Pfizer Inc.	$236 PAXLOVID $69	IBRANCE $67	XALKORI $34	SUTENT $31	BOSULIF $17	Other $17
AstraZeneca Pharmaceuticals LP	$194 CALQUENCE $170	FASLODEX $24
Other	$1,518 Star $140	Lenvima $133	Trodelvy $116	XTANDI $82	SGN35 $79	Other $968

**Types of Payments**
Food and Beverage	$2,984
Gift	$2,892
Education	$77

Research Payments

Dr. David Chan, MD has received 596 research payments totaling $8,186,116.

Biography

Dr. David Chan's areas of specialization are adult hematology, adult oncology, and medical oncology; he sees patients in Torrance, CA, San Diego, CA, and Redondo Beach, CA. These areas are among his clinical interests: non-hodgkin's lymphoma, lymphedema, and tumor. Dr. Chan is rated 5.0 stars (out of 5) by his patients. He can accept HealthSmart, Aetna, and Community Care Network (CCN), as well as other insurance carriers. Dr. Chan attended the University of California, Los Angeles (UCLA), David Geffen School of Medicine and then went on to complete his residency at Stanford Hospital & Clinics and a hospital affiliated with the University of California, Los Angeles (UCLA). He has received the following distinction: Southern California Super Doctors. He is professionally affiliated with Torrance Memorial, U.S. Department of Veterans Affairs, and Providence Little Company of Mary Medical Center Torrance. Doctor.com reports that Dr. Chan is accepting new patients at his office in Torrance, CA.