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Dr. David H. Hsi, MD

Accepting New Patients

(David H. Hsi)

(9 Ratings)

Specializes in: Cardiology (Heart Disease) and General Practice

Shanghai Medical University (1990)

32 Strawberry Hill Court 2nd Floor
Stamford, CT 06902

(203) 276-2323

Dr. David H. Hsi, MD is a cardiologist in Stamford, CT specializing in cardiology (heart disease) and general practice. He graduated from Shanghai Medical University in 1990 and has 36 years of experience. Dr. David H. Hsi, MD is affiliated with Stamford Health Medical Group.

Office Locations

32 Strawberry Hill Court 2nd Floor
Stamford, CT 06902

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75 Holly Hill Lane Suite 202
Greenwich, CT 06830

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In The News

“Dr. David Hsi, Stamford Health's chief of cardiology and co-director of the heart and vascular institute, said the clots are the result of a "system hylpercoagular state."”—"More people suffering stroke and heart disease after COVID, CT doctors say", Fairfield Citizen, January 2022

“David H. Hsi has been named chairman of the Department of Cardiology at the Deborah Heart and Lung Center.”—"On the Boards", Philadelphia Inquirer, May 2011

“He is David H. Hsi, who until last month was serving at Unity Hospital in Rochester,...”—"Deborah Hospital in Browns Mills names new Cardiology Department Chair", The Trentonian, April 2011

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

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

Top 5%

By Affordability:

cardiac imaging

In 2023, Dr. David H. Hsi, MD had a list price for cardiac imaging that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Connecticut. 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:

electrocardiogram

myocardial perfusion SPECT

In 2023, Dr. David H. Hsi, MD had a list price for electrocardiogram (EKG), myocardial perfusion SPECT, nuclear scan, nuclear stress test (myocardial perfusion imaging), SPECT scan, and stress EKG that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Connecticut. 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:

cardiac procedures

Doppler echocardiography

echocardiogram

ultrasound

By Affordability:

cardiac stress testing

color Doppler echocardiography

Doppler echocardiography

echocardiogram

spectral Doppler echocardiography

stress testing

transthoracic echocardiography

In 2012, among providers in related specialties within Connecticut, Dr. David H. Hsi, MD performed more cardiac procedures, Doppler echocardiography, echocardiogram (echo), and ultrasound (sonogram) procedures for Medicare patients than 75% of them and he also had a list price for cardiac (heart) stress testing, color Doppler echocardiography, Doppler echocardiography, echocardiogram (echo), spectral Doppler echocardiography, stress testing, and transthoracic echocardiography (TTE) 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 H. Hsi, MD treated as a cardiologist in Stamford, CT during 2012 were cardiac procedures, stress testing, ultrasound (sonogram) and nuclear scan.

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

cardiac procedures	423
doctor visit	448
hospital care	69
inpatient care	69
minimally invasive procedures	12
nuclear scan	110
stress testing	242
ultrasound (sonogram)	181

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. David H. Hsi, MD treated as a cardiologist in Stamford, CT during 2013 were cardiac procedures, ultrasound (sonogram), stress testing and nuclear scan.

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

cardiac procedures	440
doctor visit	507
hospital care	91
inpatient care	91
minimally invasive procedures	16
nuclear scan	95
stress testing	213
ultrasound (sonogram)	227

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. David H. Hsi, MD.

**Gender**
Male	429
Female	337

**Ethnicity**
Non-Hispanic White	646
Black	74
Hispanic	25
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	321
From 75 to 84	205
85 and over	77
Less than 65	163

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

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	75
Depression	22
Chronic Kidney Disease	34
Asthma	10
Osteoperosis	4
Atrial Fibrilation	29
Heart Failure	46
Chronic Obstructive Pulmonary Disease	29
Diabetes	52
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. David H. Hsi, MD treated as a cardiologist in Stamford, CT during 2014 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

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

cardiac procedures	421
doctor visit	352
hospital care	117
inpatient care	117
minimally invasive procedures	18
nuclear scan	91
stress testing	142
ultrasound (sonogram)	279

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. David H. Hsi, MD.

**Gender**
Male	419
Female	345

**Ethnicity**
Non-Hispanic White	646
Black	61
Hispanic	34
Asian	11
Other	12
Native American	0

**Age**
From 65 to 74	312
From 75 to 84	204
85 and over	121
Less than 65	127

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

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	75
Depression	20
Chronic Kidney Disease	34
Asthma	10
Osteoperosis	5
Atrial Fibrilation	29
Heart Failure	46
Chronic Obstructive Pulmonary Disease	27
Diabetes	45
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. David H. Hsi, MD treated as a cardiologist in Stamford, CT during 2015 were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

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

cardiac procedures	287
doctor visit	124
hospital care	182
inpatient care	182
nuclear scan	76
stress testing	105
ultrasound (sonogram)	196

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. David H. Hsi, MD.

**Gender**
Male	434
Female	380

**Ethnicity**
Non-Hispanic White	642
Black	84
Hispanic	46
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	248
From 75 to 84	308
85 and over	196
Less than 65	62

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

Hypertension	75
High Cholesterol	65
Stroke	9
Ischemic Heart Disease	55
Depression	18
Chronic Kidney Disease	26
Asthma	9
Osteoperosis	8
Atrial Fibrilation	34
Heart Failure	40
Chronic Obstructive Pulmonary Disease	13
Diabetes	31
Dementia	14
Cancer	15

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. David H. Hsi, MD treated as a cardiologist in Stamford, CT during 2016 were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

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

cardiac procedures	295
doctor visit	232
hospital care	170
inpatient care	170
minimally invasive procedures	19
nuclear scan	61
stress testing	120
ultrasound (sonogram)	187

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. David H. Hsi, MD.

**Gender**
Male	206
Female	205

**Ethnicity**
Non-Hispanic White	322
Black	40
Hispanic	23
Asian	14
Other	0
Native American	0

**Age**
From 65 to 74	152
From 75 to 84	127
85 and over	111
Less than 65	21

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

Hypertension	73
High Cholesterol	65
Stroke	9
Ischemic Heart Disease	54
Depression	19
Chronic Kidney Disease	30
Asthma	15
Osteoperosis	12
Atrial Fibrilation	28
Heart Failure	34
Chronic Obstructive Pulmonary Disease	15
Diabetes	31
Dementia	13
Cancer	17

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. David H. Hsi, MD treated as a cardiologist in Stamford, CT during 2017 were cardiac procedures, hospital care, inpatient care and stress testing.

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

cardiac procedures	232
doctor visit	292
hospital care	185
inpatient care	185
nuclear scan	54
stress testing	128
ultrasound (sonogram)	119

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. David H. Hsi, MD.

**Gender**
Male	183
Female	199

**Ethnicity**
Non-Hispanic White	292
Black	26
Hispanic	22
Asian	26
Other	16
Native American	0

**Age**
From 65 to 74	122
From 75 to 84	143
85 and over	101
Less than 65	16

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

Hypertension	75
High Cholesterol	62
Stroke	10
Ischemic Heart Disease	62
Depression	19
Chronic Kidney Disease	35
Asthma	5
Osteoperosis	8
Atrial Fibrilation	28
Heart Failure	33
Chronic Obstructive Pulmonary Disease	19
Diabetes	32
Dementia	18
Cancer	17

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. David H. Hsi, MD treated as a cardiologist in Stamford, CT during 2018 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

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

cardiac procedures	845
doctor visit	260
hospital care	176
inpatient care	176
lab tests	12
nuclear scan	94
stress testing	181
ultrasound (sonogram)	675

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. David H. Hsi, MD.

**Gender**
Male	416
Female	552

**Ethnicity**
Non-Hispanic White	738
Black	96
Hispanic	64
Asian	39
Other	31
Native American	0

**Age**
From 65 to 74	280
From 75 to 84	319
85 and over	300
Less than 65	69

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

Hypertension	75
High Cholesterol	70
Stroke	12
Ischemic Heart Disease	59
Depression	28
Chronic Kidney Disease	39
Asthma	10
Osteoperosis	13
Atrial Fibrilation	29
Heart Failure	38
Chronic Obstructive Pulmonary Disease	18
Diabetes	34
Dementia	24
Cancer	16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. David H. Hsi, MD treated as a cardiologist in Stamford, CT during 2019 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

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

cardiac procedures	919
doctor visit	410
hospital care	116
inpatient care	116
nuclear scan	54
stress testing	158
ultrasound (sonogram)	780

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. David H. Hsi, MD.

**Gender**
Male	491
Female	600

**Ethnicity**
Non-Hispanic White	824
Black	114
Hispanic	72
Asian	0
Other	40
Native American	0

**Age**
From 65 to 74	307
From 75 to 84	389
85 and over	303
Less than 65	92

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

Hypertension	75
High Cholesterol	72
Stroke	14
Ischemic Heart Disease	58
Depression	29
Chronic Kidney Disease	42
Asthma	9
Osteoperosis	12
Atrial Fibrilation	27
Heart Failure	39
Chronic Obstructive Pulmonary Disease	19
Diabetes	34
Dementia	25
Cancer	18

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. David H. Hsi, MD treated as a cardiologist in Stamford, CT during 2020 were cardiac procedures, ultrasound (sonogram), stress testing and nuclear scan.

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

cardiac procedures	514
doctor visit	396
hospital care	23
inpatient care	23
nuclear scan	61
stress testing	130
ultrasound (sonogram)	384

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. David H. Hsi, MD.

**Gender**
Male	291
Female	325

**Ethnicity**
Non-Hispanic White	476
Black	40
Hispanic	35
Asian	34
Other	31
Native American	0

**Age**
From 65 to 74	199
From 75 to 84	211
85 and over	165
Less than 65	41

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

Hypertension	75
High Cholesterol	69
Stroke	13
Ischemic Heart Disease	55
Depression	29
Chronic Kidney Disease	37
Asthma	8
Osteoperosis	13
Atrial Fibrilation	26
Heart Failure	32
Chronic Obstructive Pulmonary Disease	12
Diabetes	32
Dementia	24
Cancer	17

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. David H. Hsi, MD treated as a cardiologist in Stamford, CT during 2021 were cardiac procedures, ultrasound (sonogram), stress testing and nuclear scan.

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

cardiac procedures	657
doctor visit	506
nuclear scan	66
stress testing	162
ultrasound (sonogram)	495

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. David H. Hsi, MD.

**Gender**
Male	328
Female	390

**Ethnicity**
Non-Hispanic White	552
Black	52
Hispanic	43
Asian	42
Other	0
Native American	0

**Age**
From 65 to 74	214
From 75 to 84	277
85 and over	188
Less than 65	39

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

Hypertension	75
High Cholesterol	71
Stroke	14
Ischemic Heart Disease	52
Depression	29
Chronic Kidney Disease	38
Asthma	8
Osteoperosis	13
Atrial Fibrilation	29
Heart Failure	32
Chronic Obstructive Pulmonary Disease	15
Diabetes	32
Dementia	23
Cancer	19

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. David H. Hsi, MD treated as a cardiologist in Stamford, CT during 2022 were cardiac procedures, ultrasound (sonogram), stress testing and nuclear scan.

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

cardiac procedures	370
doctor visit	579
nuclear scan	11
stress testing	95
ultrasound (sonogram)	275

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. David H. Hsi, MD.

**Gender**
Male	234
Female	279

**Ethnicity**
Non-Hispanic White	388
Black	33
Hispanic	31
Asian	39
Other	22
Native American	0

**Age**
From 65 to 74	156
From 75 to 84	185
85 and over	135
Less than 65	37

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

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	45
Depression	22
Chronic Kidney Disease	21
Asthma	11
Osteoperosis	18
Atrial Fibrilation	30
Heart Failure	27
Chronic Obstructive Pulmonary Disease	15
Diabetes	26
Dementia	13
Cancer	24

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. David H. Hsi, MD treated as a cardiologist in Stamford, CT during 2023 were cardiac procedures, ultrasound (sonogram), stress testing and nuclear scan.

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

cardiac procedures	391
doctor visit	490
nuclear scan	40
stress testing	97
ultrasound (sonogram)	294

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. David H. Hsi, MD.

**Gender**
Male	231
Female	225

**Ethnicity**
Non-Hispanic White	363
Black	16
Hispanic	16
Asian	36
Other	25
Native American	0

**Age**
From 65 to 74	155
From 75 to 84	181
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. David H. Hsi, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	17
Ischemic Heart Disease	48
Depression	19
Chronic Kidney Disease	16
Asthma	10
Osteoperosis	16
Atrial Fibrilation	34
Heart Failure	27
Chronic Obstructive Pulmonary Disease	14
Diabetes	27
Dementia	11
Cancer	24

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

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

The highest averages for the top procedures that Dr. David H. Hsi, MD treated as a cardiologist in Stamford, CT were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

cardiac procedures	482
doctor visit	383
hospital care	125
inpatient care	125
lab tests	12
minimally invasive procedures	16
nuclear scan	67
stress testing	147
ultrasound (sonogram)	341

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. David H. Hsi, MD.

**Gender**
Female	319
Male	305

**Ethnicity**
Black / African American	53
Asian / Pacific Islander	20
Non-Hispanic White	490
Hispanic	34
Native American / Alaskan Native	0
Other	14

**Age**
85 and over	141
75 to 84	212
Less than 65	55
65 to 74	205

Average of Total of Conditions of Medicare patients treated by Dr. David H. Hsi, MD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. David H. Hsi, MD treated were hypertension, high cholesterol, ischemic heart disease and heart failure.

Hypertension	68
High Cholesterol	64
Stroke	10
Ischemic Heart Disease	53
Depression	21
Chronic Kidney Disease	29
Asthma	8
Osteoporosis	10
Heart Failure	32
Chronic Obstructive Pulmonary Disease	16
Diabetes	31
Atrial Fibrillation	26
Dementia	15
Cancer	16

Education & Training

Dr. David H. Hsi, MD graduated from Shanghai Medical University in 1990. He completed residency at Tufts-New England Medical Center. He is certified by the American Board of Internal Medicine: Cardiovascular Disease and has a state license in Connecticut.

Medical School: Shanghai Medical University (1990)

Residency: Tufts-New England Medical Center (1990)

Board Certification: American Board of Internal Medicine: Cardiovascular Disease

Licensed In: Connecticut

Affiliations & Hospitals

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

Stamford Health Medical Group

Ratings & Reviews

Dr. David H. Hsi, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 9 ratings. We collect ratings and reviews of Dr. David H. Hsi, MD from all over the web to help you find the right in Stamford, CT.

Overall Rating

(9 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2024-02-26

Patient verified via Press Ganey

Dr. Hsi is an excellent listener. He shows great interest, compassion & professionalism. I completely trust him. I have recommended Dr. Hsi to friends & family & they feel the same.

Overall Rating: 5.0 2025-11-24

Patient verified via Press Ganey

Dr Hsi is a true trusted member of my healthcare team. He's very thorough and always takes the time to understand all that's happening in my life that can impact my health.

Overall Rating: 5.0 2024-02-12

Patient verified via Press Ganey

Dr. Hsi makes me feel like a person he cares about during the visit. I am not just another patient. He truly cares and is so compassionate and thorough in his approach.

Overall Rating: 5.0 2024-08-05

Patient verified via Press Ganey

DR HSI IS THE BEST AND ONE OF THE MOST CARING DOCTORS AROUNDNOT MANY PHYSICIANS ARE LIKE HIM

Overall Rating: 5.0 2025-11-05

Patient verified via Press Ganey

She really has great pride and passion for her job

Overall Rating: 5.0 2025-02-09

Patient verified via Press Ganey

Doctor HSI is superb, amazing person

Overall Rating: 5.0 2026-03-02

Patient verified via Press Ganey

Couldn't be any better

Overall Rating: 5.0 2026-03-12

Patient verified via Press Ganey

Great Experience

General Payments

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

**Payments by Company**
Edwards Lifesciences Corporation	$4,844 Transcatheter Heart Valves $1,030	Edwards SAPIEN 3 Transcatheter Heart Valve $267	ClearSight System $26	$3,521
Medtronic Vascular, Inc.	$978 CoreValve Evolut $978
Abbott Laboratories	$910 THORATEC HEARTMATE 3 LVAS IMPLANT KIT $409	AMPLATZER Occluders $152	Mitra Clip system $118	Epic Stented Tissue Valve $102	Circulatory Support $91	Other $38
The Spectranetics Corporation	$280 TURBOELITE $238	CVX-300CVX-300P $42
St. Jude Medical, Inc.	$266 Electrophysiology $151	HeartMate PHP $114
Other	$1,009 BRILINTA $150	ENROUTE 0.014 Guidewire $120	XARELTO $113	NEXLETOL $111	LifeVest $98	Other $417

**Types of Payments**
Travel and Lodging	$4,666
Food and Beverage	$3,423
Education	$198

Research Payments

Dr. David H. Hsi, MD has received 13 research payments totaling $32,835.

Biography

Dr. David Hsi is a specialist in interventional cardiology. He works in Stamford, CT and Greenwich, CT. He is conversant in Chinese. His hospital/clinic affiliations include Stamford Health Medical Group (SHMG) and Yale New Haven Health. Dr. Hsi graduated from Shanghai Medical University. For his professional training, Dr. Hsi completed residency programs at Tufts Medical Center and Newton-Wellesley Hospital. Patients gave Dr. Hsi an average rating of 5.0 stars (out of 5). He usually is in-network for Anthem, ConnectiCare, and UnitedHealthcare, as well as other insurance carriers. Yale New Haven Health reports that Dr. Hsi is accepting new patients at his office in Greenwich, CT.