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Home > CA Providers > Cytopathologists

Dr. Andrea L. Ong, MD

(Dr. Andrea Ong, M.D.)

(No ratings)

Specializes in: Cytopathology

University of Massachusetts Medical School

3301 C Street Suite 200 E
Sacramento, CA 95816

(916) 447-6833

Dr. Andrea L. Ong, MD is a cytopathologist in Sacramento, CA specializing in cytopathology. She graduated from University of Massachusetts Medical School. Dr. Andrea L. Ong, MD is affiliated with Dignity Health, Sutter Health, DIAGNOSTIC PATHOLOGY MEDICAL GROUP INC and Mercy General Hospital Methodist Hospital of Sacramento.

Office Locations

Mercy General Hospital Methodist Hospital of Sacramento

3301 C Street Suite 200 E
Sacramento, CA 95816

(916) 447-6833

(916) 446-5627

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Noteworthy Medicare Patient Procedures Performed by Dr. Andrea L. Ong, MD in 2023

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

Top 5%

By Volume:

cytology

non-gynecologic liquid-based cytology

By Affordability:

genetic testing

molecular genetic testing

In 2023, among providers in related specialties within California, Dr. Andrea L. Ong, MD performed more cytology, and non-gynecologic liquid-based cytology procedures for Medicare patients than 95% of them and she also had a list price for genetic testing, and molecular genetic testing 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 Affordability:

high-risk HPV testing

low-risk HPV testing

special stains

In 2023, Dr. Andrea L. Ong, MD had a list price for high-risk HPV testing, low-risk HPV testing, and special stains that was lower than the list prices billed to Medicare by 90% 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 25%

By Volume:

liquid-based Pap test

By Affordability:

cervical cancer screening

gynecologic cytology

gynecologic pathology

human papillomavirus testing

immunohistochemistry test

liquid-based Pap test

molecular diagnostic testing

Pap test

In 2012, among providers in related specialties within California, Dr. Andrea L. Ong, MD performed more liquid-based Pap test procedures for Medicare patients than 75% of them and she also had a list price for cervical cancer screening, gynecologic cytology, gynecologic pathology, human papillomavirus (HPV) testing, immunohistochemistry (IHC) test, liquid-based Pap test, molecular diagnostic testing, and Pap 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. Andrea L. Ong, MD treated as a cytopathologist in Sacramento, CA during 2012 were cytology, lab tests, gynecologic pathology and preventive care.

Volume of procedures performed by Dr. Andrea L. Ong, MD for Medicare patients.

aspiration	27
cytology	682
diagnostic procedures	27
doctor visit	11
gynecologic pathology	210
image guided procedures	15
lab tests	366
minimally invasive procedures	27
minor procedures	27
preventive care	109

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Andrea L. Ong, MD treated as a cytopathologist in Sacramento, CA during 2013 were cytology, lab tests, gynecologic pathology and preventive care.

Volume of procedures performed by Dr. Andrea L. Ong, MD for Medicare patients.

aspiration	52
cytology	644
diagnostic procedures	52
doctor visit	43
gynecologic pathology	210
image guided procedures	33
lab tests	388
minimally invasive procedures	52
minor procedures	52
preventive care	141

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrea L. Ong, MD.

**Gender**
Male	448
Female	800

**Ethnicity**
Non-Hispanic White	1026
Black	28
Hispanic	92
Asian	81
Other	0
Native American	0

**Age**
From 65 to 74	573
From 75 to 84	353
85 and over	143
Less than 65	179

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2013

Hypertension	60
High Cholesterol	52
Stroke	4
Ischemic Heart Disease	25
Depression	20
Chronic Kidney Disease	23
Asthma	9
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	12
Diabetes	25
Dementia	7
Cancer	18

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Andrea L. Ong, MD treated as a cytopathologist in Sacramento, CA during 2014 were cytology, lab tests, gynecologic pathology and preventive care.

Volume of procedures performed by Dr. Andrea L. Ong, MD for Medicare patients.

aspiration	28
consultation	20
cytology	672
diagnostic procedures	28
gynecologic pathology	160
image guided procedures	15
lab tests	291
minimally invasive procedures	28
minor procedures	28
preventive care	119

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrea L. Ong, MD.

**Gender**
Male	496
Female	699

**Ethnicity**
Non-Hispanic White	936
Black	56
Hispanic	110
Asian	54
Other	0
Native American	0

**Age**
From 65 to 74	534
From 75 to 84	347
85 and over	131
Less than 65	183

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2014

Hypertension	61
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	25
Depression	26
Chronic Kidney Disease	26
Asthma	11
Osteoperosis	7
Atrial Fibrilation	11
Heart Failure	14
Chronic Obstructive Pulmonary Disease	13
Diabetes	26
Dementia	7
Cancer	17

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Andrea L. Ong, MD treated as a cytopathologist in Sacramento, CA during 2015 were cytology, lab tests, gynecologic pathology and preventive care.

Volume of procedures performed by Dr. Andrea L. Ong, MD for Medicare patients.

aspiration	51
cytology	1676
diagnostic procedures	51
doctor visit	11
gynecologic pathology	473
image guided procedures	31
lab tests	510
minimally invasive procedures	51
minor procedures	51
preventive care	416

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrea L. Ong, MD.

**Gender**
Male	1614
Female	2168

**Ethnicity**
Non-Hispanic White	2992
Black	180
Hispanic	308
Asian	208
Other	0
Native American	0

**Age**
From 65 to 74	1628
From 75 to 84	1170
85 and over	448
Less than 65	536

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2015

Hypertension	62
High Cholesterol	55
Stroke	5
Ischemic Heart Disease	28
Depression	22
Chronic Kidney Disease	28
Asthma	13
Osteoperosis	8
Atrial Fibrilation	12
Heart Failure	16
Chronic Obstructive Pulmonary Disease	14
Diabetes	27
Dementia	7
Cancer	18

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Andrea L. Ong, MD treated as a cytopathologist in Sacramento, CA during 2016 were cytology, lab tests, gynecologic pathology and preventive care.

Volume of procedures performed by Dr. Andrea L. Ong, MD for Medicare patients.

aspiration	48
consultation	12
cytology	1211
diagnostic procedures	48
doctor visit	37
gynecologic pathology	274
image guided procedures	48
lab tests	278
minimally invasive procedures	48
minor procedures	48
preventive care	250

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrea L. Ong, MD.

**Gender**
Male	743
Female	771

**Ethnicity**
Non-Hispanic White	1205
Black	49
Hispanic	128
Asian	89
Other	0
Native American	0

**Age**
From 65 to 74	614
From 75 to 84	530
85 and over	191
Less than 65	179

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2016

Hypertension	67
High Cholesterol	56
Stroke	5
Ischemic Heart Disease	30
Depression	20
Chronic Kidney Disease	34
Asthma	18
Osteoperosis	8
Atrial Fibrilation	12
Heart Failure	16
Chronic Obstructive Pulmonary Disease	16
Diabetes	30
Dementia	7
Cancer	17

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Andrea L. Ong, MD treated as a cytopathologist in Sacramento, CA during 2017 were cytology, lab tests, gynecologic pathology and preventive care.

Volume of procedures performed by Dr. Andrea L. Ong, MD for Medicare patients.

aspiration	39
cytology	1270
diagnostic procedures	39
doctor visit	29
gynecologic pathology	331
image guided procedures	39
lab tests	342
minimally invasive procedures	39
minor procedures	39
preventive care	302

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrea L. Ong, MD.

**Gender**
Male	645
Female	787

**Ethnicity**
Non-Hispanic White	1151
Black	65
Hispanic	98
Asian	72
Other	0
Native American	0

**Age**
From 65 to 74	620
From 75 to 84	450
85 and over	184
Less than 65	178

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2017

Hypertension	65
High Cholesterol	50
Stroke	5
Ischemic Heart Disease	28
Depression	22
Chronic Kidney Disease	35
Asthma	9
Osteoperosis	8
Atrial Fibrilation	13
Heart Failure	14
Chronic Obstructive Pulmonary Disease	15
Diabetes	27
Dementia	7
Cancer	17

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Andrea L. Ong, MD treated as a cytopathologist in Sacramento, CA during 2018 were cytology, lab tests, gynecologic pathology and preventive care.

Volume of procedures performed by Dr. Andrea L. Ong, MD for Medicare patients.

aspiration	30
cytology	1251
diagnostic procedures	30
doctor visit	20
gynecologic pathology	225
image guided procedures	30
lab tests	239
minimally invasive procedures	30
minor procedures	30
preventive care	186

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrea L. Ong, MD.

**Gender**
Male	773
Female	827

**Ethnicity**
Non-Hispanic White	1284
Black	70
Hispanic	126
Asian	76
Other	32
Native American	12

**Age**
From 65 to 74	735
From 75 to 84	518
85 and over	181
Less than 65	166

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2018

Hypertension	66
High Cholesterol	56
Stroke	5
Ischemic Heart Disease	29
Depression	22
Chronic Kidney Disease	37
Asthma	8
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	15
Chronic Obstructive Pulmonary Disease	15
Diabetes	29
Dementia	8
Cancer	20

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Andrea L. Ong, MD treated as a cytopathologist in Sacramento, CA during 2019 were cytology, gynecologic pathology, lab tests and preventive care.

Volume of procedures performed by Dr. Andrea L. Ong, MD for Medicare patients.

cytology	1274
doctor visit	21
gynecologic pathology	322
lab tests	315
preventive care	244

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrea L. Ong, MD.

**Gender**
Male	727
Female	834

**Ethnicity**
Non-Hispanic White	1249
Black	66
Hispanic	136
Asian	64
Other	35
Native American	11

**Age**
From 65 to 74	677
From 75 to 84	524
85 and over	195
Less than 65	165

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2019

Hypertension	67
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	29
Depression	24
Chronic Kidney Disease	37
Asthma	9
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	16
Chronic Obstructive Pulmonary Disease	16
Diabetes	28
Dementia	8
Cancer	19

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Andrea L. Ong, MD treated as a cytopathologist in Sacramento, CA during 2020 were cytology, lab tests, gynecologic pathology and preventive care.

Volume of procedures performed by Dr. Andrea L. Ong, MD for Medicare patients.

cytology	942
gynecologic pathology	221
lab tests	260
preventive care	174

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrea L. Ong, MD.

**Gender**
Male	615
Female	685

**Ethnicity**
Non-Hispanic White	1020
Black	46
Hispanic	116
Asian	72
Other	0
Native American	0

**Age**
From 65 to 74	605
From 75 to 84	391
85 and over	149
Less than 65	155

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2020

Hypertension	64
High Cholesterol	58
Stroke	3
Ischemic Heart Disease	31
Depression	23
Chronic Kidney Disease	36
Asthma	8
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	15
Chronic Obstructive Pulmonary Disease	15
Diabetes	27
Dementia	7
Cancer	19

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Andrea L. Ong, MD treated as a cytopathologist in Sacramento, CA during 2021 were cytology, lab tests and gynecologic pathology.

Volume of procedures performed by Dr. Andrea L. Ong, MD for Medicare patients.

cytology	875
gynecologic pathology	20
lab tests	84

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrea L. Ong, MD.

**Gender**
Male	692
Female	695

**Ethnicity**
Non-Hispanic White	1132
Black	0
Hispanic	111
Asian	55
Other	44
Native American	0

**Age**
From 65 to 74	614
From 75 to 84	497
85 and over	180
Less than 65	96

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2021

Hypertension	69
High Cholesterol	63
Stroke	6
Ischemic Heart Disease	35
Depression	23
Chronic Kidney Disease	41
Asthma	9
Osteoperosis	9
Atrial Fibrilation	12
Heart Failure	17
Chronic Obstructive Pulmonary Disease	14
Diabetes	29
Dementia	8
Cancer	22

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Andrea L. Ong, MD treated as a cytopathologist in Sacramento, CA during 2022 were cytology, lab tests, gynecologic pathology and preventive care.

Volume of procedures performed by Dr. Andrea L. Ong, MD for Medicare patients.

cytology	752
gynecologic pathology	82
lab tests	191
preventive care	44

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Andrea L. Ong, MD.

**Gender**
Male	618
Female	645

**Ethnicity**
Non-Hispanic White	997
Black	55
Hispanic	99
Asian	64
Other	0
Native American	0

**Age**
From 65 to 74	570
From 75 to 84	454
85 and over	138
Less than 65	101

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2022

Hypertension	73
High Cholesterol	73
Stroke	8
Ischemic Heart Disease	25
Depression	18
Chronic Kidney Disease	29
Asthma	12
Osteoperosis	12
Atrial Fibrilation	21
Heart Failure	16
Chronic Obstructive Pulmonary Disease	17
Diabetes	29
Dementia	6
Cancer	28

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Andrea L. Ong, MD for Medicare patients.

The highest averages for the top procedures that Dr. Andrea L. Ong, MD treated as a cytopathologist in Sacramento, CA were cytology, lab tests, gynecologic pathology and preventive care.

aspiration	39
consultation	16
cytology	1022
diagnostic procedures	39
doctor visit	24
gynecologic pathology	229
image guided procedures	30
lab tests	296
minimally invasive procedures	39
minor procedures	39
preventive care	198

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Andrea L. Ong, MD.

**Gender**
Male	670
Female	810

**Ethnicity**
Black / African American	55
Asian / Pacific Islander	75
Non-Hispanic White	1181
Native American / Alaskan Native	2
Hispanic	120
Other	10

**Age**
75 to 84	475
85 and over	176
Less than 65	176
65 to 74	651

Average of Total of Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Andrea L. Ong, MD treated were hypertension, high cholesterol, chronic kidney disease and diabetes.

Hypertension	59
High Cholesterol	52
Stroke	4
Ischemic Heart Disease	25
Depression	20
Chronic Kidney Disease	29
Asthma	9
Osteoporosis	8
Heart Failure	13
Chronic Obstructive Pulmonary Disease	13
Diabetes	25
Atrial Fibrillation	11
Dementia	6
Cancer	17

Education & Training

Dr. Andrea L. Ong, MD graduated from University of Massachusetts Medical School. She is certified by the Path (Sub: Cytopathology) Pathology-Anatomic/Clinical Pathology and has a state license in California.

Medical School: University of Massachusetts Medical School

Board Certification: Path (Sub: Cytopathology) Pathology-Anatomic/Clinical Pathology

Licensed In: California

Affiliations & Hospitals

Dr. Andrea L. Ong, MD is associated with these hospitals and organizations:

Dignity Health

Sutter Health

DIAGNOSTIC PATHOLOGY MEDICAL GROUP INC

Mercy General Hospital Methodist Hospital of Sacramento

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. Andrea L. Ong, MD appears to accept the following insurance providers: Cigna, Anthem Blue Cross of California, Blue Shield of California, WellCare, Health Net Medicare Advantage HMO, Medicare Advantage, United Healthcare, Accepted Aetna Plans: Health Fund HMO (aka HMO/HRA): HMO: HMO Deductible Plans: Quality Point of Service (QPOS), Accepted SCAN Plans: Sutter Senior Advantage, a SCAN Medicare Plan (HMO) and Accepted Sutter Health Plan Plans: Individual and Family Plan HMO: Large and Small Group HMO.

Insurance Accepted by Provider includes:

According to our sources, Dr. Andrea L. Ong, MD accepts the following insurance providers:

Cigna

Anthem Blue Cross of California

Blue Shield of California

WellCare

Health Net Medicare Advantage HMO

Medicare Advantage

United Healthcare

Accepted Aetna Plans: Health Fund HMO (aka HMO/HRA): HMO: HMO Deductible Plans: Quality Point of Service (QPOS)

Accepted SCAN Plans: Sutter Senior Advantage, a SCAN Medicare Plan (HMO)

Accepted Sutter Health Plan Plans: Individual and Family Plan HMO: Large and Small Group HMO

Ratings & Reviews

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General Payments

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

**Payments by Company**
AtriCure, Inc.	$144 SYNERGY ABLATION SYSTEM $144

**Types of Payments**
Food and Beverage	$144

Biography

Dr. Andrea Ong is a physician who specializes in cytopathology. Blue Shield, Health Net, and Anthem are among the insurance carriers that Dr. Ong honors. She is a graduate of the University of Massachusetts Medical School. She is professionally affiliated with Dignity Health and Sutter Health. Unfortunately, according to Dignity Health, she is not currently accepting new patients.

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Dr. Andrea L. Ong, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Andrea L. Ong, MD in 2023

By Volume:

By Affordability:

By Affordability:

By Volume:

By Affordability:

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Andrea L. Ong, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Insurance Information

Ratings & Reviews

General Payments

Biography

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