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Dr. Zian H. Tseng, MD, MS

Accepting New Patients

(Zian H. Tseng, MD)

(91 Ratings)

Specializes in: Cardiology (Heart Disease) and Cardiac Electrophysiology (Heart Rhythm)

University of California, San Francisco (UCSF), School of Medicine

Professional interests include: long QT syndrome, heart block, cardiac catheter ablation, and more.

535 Mission Bay Boulevard
South San Francisco, CA 94143

(415) 353-2873

Dr. Zian H. Tseng, MD, MS is a cardiologist in San Francisco, CA specializing in cardiology (heart disease) and cardiac electrophysiology (heart rhythm). He graduated from University of California, San Francisco (UCSF), School of Medicine. Dr. Zian H. Tseng, MD, MS is affiliated with UCSF Health, Hill Physicians and Cardiac Electrophysiology and Arrhythmia Service.

Office Locations

1600 Divisadero Street Floor 2
San Francisco, CA 94143

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400 Parnassus Avenue Fifth Floor
San Francisco, CA 94143

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400 PARNASSUS AVENUE FLOOR 5
SAN FRANCISCO, CA 94143

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535 Mission Bay Boulevard South
San Francisco, CA 94158

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1600 Divisadero Street Second Floor
San Francisco, CA 94115

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535 MISSION BAY BOULEVARD S
SAN FRANCISCO, CA 94143

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535 Mission Bay Boulevard
South San Francisco, CA 94143

(415) 353-2873

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In The News (see more mentions in the news)

“From a prospective autopsy study of unselected deaths in San Francisco County, California, it was evident that out of 943 presumed SCDs, 62% were autopsy-confirmed, and only 41% of those were due...”—"Think Heart Attacks Cause Most Sudden Cardiac Deaths? Think Again, Study Says", MedPage Today, April 2026

“UCSF Health Cardiologist and Electrophysiologist Doctor Zian Tseng said, although he's not familiar with this particular case, he's not surprised at the sudden death of a 46-year-old athletic...”—"Warriors-Mavericks game postponed after death of Dejan Milojevic", Yahoo News, January 2024

“"The study offers a tragic window into these vulnerable cases," said Dr. Zian H. Tseng, a professor of medicine at UCSF and one of the study's authors.”—"San Francisco's homeless population 16 times more likely to die suddenly than housed neighbors, study finds", Los Angeles Times, October 2023

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

doctor visit	64

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

doctor visit	82

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Zian H. Tseng, MD, MS.

**Gender**
Male	175
Female	179

**Ethnicity**
Non-Hispanic White	210
Black	23
Hispanic	34
Asian	76
Other	0
Native American	0

**Age**
From 65 to 74	121
From 75 to 84	112
85 and over	67
Less than 65	54

Conditions of Medicare patients treated by Dr. Zian H. Tseng, MD, MS in 2013

Hypertension	75
High Cholesterol	64
Stroke	10
Ischemic Heart Disease	57
Depression	27
Chronic Kidney Disease	46
Asthma	11
Osteoperosis	11
Atrial Fibrilation	40
Heart Failure	48
Chronic Obstructive Pulmonary Disease	20
Diabetes	34
Dementia	15
Cancer	14

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Zian H. Tseng, MD, MS treated as a cardiologist in San Francisco, CA during 2014 were hospital care, inpatient care and cardioversion.

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

cardioversion	12
doctor visit	126
hospital care	36
inpatient care	36

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Zian H. Tseng, MD, MS.

**Gender**
Male	302
Female	245

**Ethnicity**
Non-Hispanic White	346
Black	45
Hispanic	44
Asian	101
Other	0
Native American	0

**Age**
From 65 to 74	201
From 75 to 84	165
85 and over	80
Less than 65	101

Conditions of Medicare patients treated by Dr. Zian H. Tseng, MD, MS in 2014

Hypertension	75
High Cholesterol	63
Stroke	10
Ischemic Heart Disease	55
Depression	28
Chronic Kidney Disease	41
Asthma	11
Osteoperosis	9
Atrial Fibrilation	37
Heart Failure	43
Chronic Obstructive Pulmonary Disease	18
Diabetes	34
Dementia	12
Cancer	14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

doctor visit	72

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Zian H. Tseng, MD, MS.

**Gender**
Male	372
Female	312

**Ethnicity**
Non-Hispanic White	396
Black	72
Hispanic	62
Asian	128
Other	0
Native American	0

**Age**
From 65 to 74	234
From 75 to 84	202
85 and over	120
Less than 65	128

Conditions of Medicare patients treated by Dr. Zian H. Tseng, MD, MS in 2015

Hypertension	75
High Cholesterol	57
Stroke	9
Ischemic Heart Disease	56
Depression	27
Chronic Kidney Disease	49
Asthma	14
Osteoperosis	9
Atrial Fibrilation	39
Heart Failure	44
Chronic Obstructive Pulmonary Disease	18
Diabetes	36
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Zian H. Tseng, MD, MS treated as a cardiologist in San Francisco, CA during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

doctor visit	81
hospital care	12
inpatient care	12

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Zian H. Tseng, MD, MS.

**Gender**
Male	245
Female	216

**Ethnicity**
Non-Hispanic White	274
Black	37
Hispanic	44
Asian	89
Other	0
Native American	0

**Age**
From 65 to 74	147
From 75 to 84	142
85 and over	82
Less than 65	90

Conditions of Medicare patients treated by Dr. Zian H. Tseng, MD, MS in 2016

Hypertension	75
High Cholesterol	59
Stroke	12
Ischemic Heart Disease	56
Depression	30
Chronic Kidney Disease	50
Asthma	26
Osteoperosis	11
Atrial Fibrilation	34
Heart Failure	44
Chronic Obstructive Pulmonary Disease	21
Diabetes	38
Dementia	19
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

doctor visit	78

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Zian H. Tseng, MD, MS.

**Gender**
Male	228
Female	179

**Ethnicity**
Non-Hispanic White	248
Black	33
Hispanic	38
Asian	74
Other	0
Native American	0

**Age**
From 65 to 74	148
From 75 to 84	124
85 and over	71
Less than 65	64

Conditions of Medicare patients treated by Dr. Zian H. Tseng, MD, MS in 2017

Hypertension	74
High Cholesterol	51
Stroke	7
Ischemic Heart Disease	53
Depression	21
Chronic Kidney Disease	46
Asthma	11
Osteoperosis	12
Atrial Fibrilation	43
Heart Failure	42
Chronic Obstructive Pulmonary Disease	17
Diabetes	36
Dementia	14
Cancer	14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Zian H. Tseng, MD, MS treated as a cardiologist in San Francisco, CA during 2018 were hospital care and inpatient care.

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

doctor visit	121
hospital care	15
inpatient care	15

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Zian H. Tseng, MD, MS.

**Gender**
Male	334
Female	270

**Ethnicity**
Non-Hispanic White	346
Black	60
Hispanic	59
Asian	113
Other	0
Native American	0

**Age**
From 65 to 74	235
From 75 to 84	182
85 and over	90
Less than 65	97

Conditions of Medicare patients treated by Dr. Zian H. Tseng, MD, MS in 2018

Hypertension	75
High Cholesterol	62
Stroke	9
Ischemic Heart Disease	52
Depression	30
Chronic Kidney Disease	52
Asthma	12
Osteoperosis	12
Atrial Fibrilation	37
Heart Failure	41
Chronic Obstructive Pulmonary Disease	21
Diabetes	36
Dementia	19
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Zian H. Tseng, MD, MS treated as a cardiologist in San Francisco, CA during 2019 were ultrasound (sonogram), minimally invasive procedures and cardiac procedures.

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

cardiac procedures	12
doctor visit	140
minimally invasive procedures	12
ultrasound (sonogram)	12

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Zian H. Tseng, MD, MS.

**Gender**
Male	328
Female	250

**Ethnicity**
Non-Hispanic White	336
Black	59
Hispanic	39
Asian	115
Other	0
Native American	0

**Age**
From 65 to 74	223
From 75 to 84	181
85 and over	97
Less than 65	77

Conditions of Medicare patients treated by Dr. Zian H. Tseng, MD, MS in 2019

Hypertension	75
High Cholesterol	61
Stroke	7
Ischemic Heart Disease	54
Depression	27
Chronic Kidney Disease	49
Asthma	10
Osteoperosis	12
Atrial Fibrilation	38
Heart Failure	42
Chronic Obstructive Pulmonary Disease	19
Diabetes	35
Dementia	15
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

doctor visit	47

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Zian H. Tseng, MD, MS.

**Gender**
Male	242
Female	162

**Ethnicity**
Non-Hispanic White	230
Black	50
Hispanic	38
Asian	69
Other	0
Native American	0

**Age**
From 65 to 74	145
From 75 to 84	129
85 and over	59
Less than 65	71

Conditions of Medicare patients treated by Dr. Zian H. Tseng, MD, MS in 2020

Hypertension	75
High Cholesterol	60
Stroke	7
Ischemic Heart Disease	54
Depression	34
Chronic Kidney Disease	59
Asthma	12
Osteoperosis	12
Atrial Fibrilation	40
Heart Failure	46
Chronic Obstructive Pulmonary Disease	17
Diabetes	41
Dementia	18
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Zian H. Tseng, MD, MS treated as a cardiologist in San Francisco, CA during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

doctor visit	31
hospital care	15
inpatient care	15

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Zian H. Tseng, MD, MS.

**Gender**
Male	563
Female	568

**Ethnicity**
Non-Hispanic White	645
Black	125
Hispanic	98
Asian	205
Other	0
Native American	0

**Age**
From 65 to 74	442
From 75 to 84	329
85 and over	188
Less than 65	172

Conditions of Medicare patients treated by Dr. Zian H. Tseng, MD, MS in 2021

Hypertension	75
High Cholesterol	63
Stroke	11
Ischemic Heart Disease	55
Depression	32
Chronic Kidney Disease	54
Asthma	11
Osteoperosis	16
Atrial Fibrilation	34
Heart Failure	43
Chronic Obstructive Pulmonary Disease	22
Diabetes	39
Dementia	20
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Zian H. Tseng, MD, MS treated as a cardiologist in San Francisco, CA during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

doctor visit	93
hospital care	34
inpatient care	34

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Zian H. Tseng, MD, MS.

**Gender**
Male	659
Female	612

**Ethnicity**
Non-Hispanic White	702
Black	113
Hispanic	118
Asian	272
Other	0
Native American	0

**Age**
From 65 to 74	458
From 75 to 84	420
85 and over	213
Less than 65	180

Conditions of Medicare patients treated by Dr. Zian H. Tseng, MD, MS in 2022

Hypertension	75
High Cholesterol	74
Stroke	18
Ischemic Heart Disease	44
Depression	30
Chronic Kidney Disease	39
Asthma	15
Osteoperosis	19
Atrial Fibrilation	43
Heart Failure	40
Chronic Obstructive Pulmonary Disease	22
Diabetes	39
Dementia	15
Cancer	20

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Zian H. Tseng, MD, MS treated as a cardiologist in San Francisco, CA during 2023 were cardioversion.

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

cardioversion	12
doctor visit	123

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Zian H. Tseng, MD, MS.

**Gender**
Male	198
Female	156

**Ethnicity**
Non-Hispanic White	198
Black	36
Hispanic	35
Asian	65
Other	20
Native American	0

**Age**
From 65 to 74	127
From 75 to 84	123
85 and over	70
Less than 65	34

Conditions of Medicare patients treated by Dr. Zian H. Tseng, MD, MS in 2023

Hypertension	75
High Cholesterol	74
Stroke	17
Ischemic Heart Disease	44
Depression	24
Chronic Kidney Disease	42
Asthma	14
Osteoperosis	18
Atrial Fibrilation	62
Heart Failure	44
Chronic Obstructive Pulmonary Disease	18
Diabetes	41
Dementia	15
Cancer	21

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Zian H. Tseng, MD, MS treated as a cardiologist in San Francisco, CA during 2024 were cardioversion.

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

cardioversion	16
doctor visit	137

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Zian H. Tseng, MD, MS.

**Gender**
Male	240
Female	189

**Ethnicity**
Non-Hispanic White	267
Black	28
Hispanic	35
Asian	70
Other	0
Native American	0

**Age**
From 65 to 74	149
From 75 to 84	145
85 and over	92
Less than 65	43

Conditions of Medicare patients treated by Dr. Zian H. Tseng, MD, MS in 2024

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	47
Depression	25
Chronic Kidney Disease	42
Asthma	14
Osteoperosis	23
Atrial Fibrilation	57
Heart Failure	49
Chronic Obstructive Pulmonary Disease	17
Diabetes	39
Dementia	16
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Zian H. Tseng, MD, MS for Medicare patients.

The highest averages for the top procedures that Dr. Zian H. Tseng, MD, MS treated as a cardiologist in San Francisco, CA were hospital care, inpatient care, cardioversion and ultrasound (sonogram).

cardiac procedures	12
cardioversion	13
doctor visit	91
hospital care	22
inpatient care	22
minimally invasive procedures	12
ultrasound (sonogram)	12

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Zian H. Tseng, MD, MS.

**Gender**
Female	256
Male	298

**Ethnicity**
Black / African American	52
Asian / Pacific Islander	105
Non-Hispanic White	322
Hispanic	49
Native American / Alaskan Native	0
Other	1

**Age**
85 and over	94
75 to 84	173
Less than 65	85
65 to 74	202

Average of Total of Conditions of Medicare patients treated by Dr. Zian H. Tseng, MD, MS From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Zian H. Tseng, MD, MS treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	69
High Cholesterol	58
Stroke	10
Ischemic Heart Disease	48
Depression	25
Chronic Kidney Disease	43
Asthma	12
Osteoporosis	12
Heart Failure	40
Chronic Obstructive Pulmonary Disease	17
Diabetes	34
Atrial Fibrillation	38
Cancer	14
Dementia	14

Education & Training

Dr. Zian H. Tseng, MD, MS graduated from University of California, San Francisco (UCSF), School of Medicine. He completed residency at University of California, San Francisco (UCSF) Affiliated Hospitals. He is certified by the Board certification: Cardiovascular Disease, American Board of Internal Med/Cardiovascular Dis and has a state license in California.

Medical School: University of California, San Francisco (UCSF), School of Medicine

Residency: University of California, San Francisco (UCSF) Affiliated Hospitals

Board Certification: Board certification: Cardiovascular Disease, American Board of Internal Med/Cardiovascular Dis

Licensed In: California

Affiliations & Hospitals

Dr. Zian H. Tseng, MD, MS is associated with these hospitals and organizations:

UCSF Health

Hill Physicians

Cardiac Electrophysiology and Arrhythmia Service

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. Zian H. Tseng, MD, MS appears to accept the following insurance providers: Cigna, Aetna, Blue Shield of California, UnitedHealthcare, SCAN Health Plan, Anthem, Health Net, Hill Physicians Care Solutions, Central Health Plan, CCHP Health Plan (Chinese Community Health Plan) and Canopy Health.

Insurance Accepted by Provider includes:

According to our sources, Dr. Zian H. Tseng, MD, MS accepts the following insurance providers:

Cigna

Aetna

Blue Shield of California

UnitedHealthcare

SCAN Health Plan

Anthem

Health Net

Hill Physicians Care Solutions

Central Health Plan

CCHP Health Plan (Chinese Community Health Plan)

Canopy Health

Ratings & Reviews

Dr. Zian H. Tseng, MD, MS has an exceptional overall rating with an average of 4.82 out of 5 stars based on 91 ratings. We collect ratings and reviews of Dr. Zian H. Tseng, MD, MS from all over the web to help you find the right in San Francisco, CA.

4.82

Overall Rating

(91 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2025-03-24

Patient verified via Press Ganey

Caring and friendly.

Overall Rating: 5.0 2025-11-05

Patient verified via Press Ganey

Great

General Payments

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

**Payments by Company**
Medtronic Vascular, Inc.	$4,403 Visia AF $1,823	Micra $898	Advisa $174	Evera $21	$1,487
Medtronic, Inc.	$1,911 Micra $296	Cobalt $182	AURORA EV-ICD MRI SURESCAN $164	AZURE XT DR MRI SURESCAN $82	SYNCRA CRT-P $49	Other $1,139
Boston Scientific Corporation	$1,739 TACHY LEAD $1,039	GENERAL THERAPIES $517	TACHY GENERATOR $19	$164
Abbott Laboratories	$626 ENSITE PRECISION $199	Confirm Rx $141	AVEIR $120	GALLANT $90	TACTICATH ABLATION CATHETER, SENSOR ENABLED $77
AltaThera Pharmaceuticals LLC	$600 Sotalol Hydrochloride $600
Other	$596 Carto 3 $150	Electrophysiology $136	LifeVest $123	QDOT MICRO Catheter $90	Bradycardia products $85	Other $11

**Types of Payments**
Travel and Lodging	$4,273
Food and Beverage	$2,998
Charitable Contribution	$1,487
Honoraria	$600
Grant	$517

Biography

Dr. Zian Tseng's area of specialization is cardiac electrophysiology (heart rhythm). He has a 5.0 out of 5 star average patient rating. These areas are among his clinical interests: heart block, cardiac catheter ablation, and long QT syndrome. Dr. Tseng appears to be in-network for Blue Shield, Health Net, and Anthem, in addition to other insurance carriers. Dr. Tseng studied medicine at the University of California, San Francisco (UCSF), School of Medicine. He trained at a hospital affiliated with the University of California, San Francisco (UCSF) for his residency. He is affiliated with UCSF Health and Hill Physicians. He welcomes new patients at his office inSAN FRANCISCO, CA as reported by Doctor.com.