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Dr. Thomas Aaron Risser, MD

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Specializes in: Adult Critical Care and Adult Cardiology

1493 Cambridge Street
Cambridge, MA 02139

(617) 665-1025

Dr. Thomas Aaron Risser, MD is a critical care physician in Cambridge, MA specializing in adult critical care and adult cardiology.

Office Locations

1493 Cambridge Street
Cambridge, MA 02139

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In The News

“Dr. Thomas Risser, a cardiologist at the Cambridge Health Alliance, said the situation is "absolutely" a doctor's worst nightmare, pointing to past instances of patients attacking doctors.”—"Heart surgeon slain by deceased patient"s son", Boston Herald, January 2015

Noteworthy Medicare Patient Procedures Performed by Dr. Thomas Aaron Risser, MD in 2023

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

Top 5%

By Affordability:

color Doppler echocardiography

Doppler echocardiography

spectral Doppler echocardiography

In 2023, Dr. Thomas Aaron Risser, MD had a list price for color Doppler echocardiography, Doppler echocardiography, and spectral Doppler echocardiography that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Massachusetts. 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:

transthoracic echocardiography

In 2012, Dr. Thomas Aaron Risser, MD performed more transthoracic echocardiography (TTE) procedures for Medicare patients than 75% of providers in related specialties within Massachusetts.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Thomas Aaron Risser, MD treated as a critical care physician in Cambridge, MA during 2012 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Aaron Risser, MD for Medicare patients.

cardiac procedures	434
doctor visit	512
hospital care	237
inpatient care	237
stress testing	27
ultrasound (sonogram)	466
vascular procedures	59

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Thomas Aaron Risser, MD treated as a critical care physician in Cambridge, MA during 2013 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Aaron Risser, MD for Medicare patients.

cardiac procedures	363
doctor visit	508
hospital care	257
inpatient care	257
ultrasound (sonogram)	396
vascular procedures	33

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Aaron Risser, MD.

**Gender**
Male	1097
Female	1181

**Ethnicity**
Non-Hispanic White	1720
Black	226
Hispanic	203
Asian	66
Other	0
Native American	0

**Age**
From 65 to 74	669
From 75 to 84	538
85 and over	362
Less than 65	709

Conditions of Medicare patients treated by Dr. Thomas Aaron Risser, MD in 2013

Hypertension	75
High Cholesterol	53
Stroke	9
Ischemic Heart Disease	53
Depression	45
Chronic Kidney Disease	41
Asthma	14
Osteoperosis	11
Atrial Fibrilation	22
Heart Failure	38
Chronic Obstructive Pulmonary Disease	27
Diabetes	39
Dementia	18
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Thomas Aaron Risser, MD treated as a critical care physician in Cambridge, MA during 2014 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Aaron Risser, MD for Medicare patients.

cardiac procedures	421
doctor visit	456
hospital care	287
inpatient care	287
ultrasound (sonogram)	491
vascular procedures	70

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Aaron Risser, MD.

**Gender**
Male	1156
Female	1163

**Ethnicity**
Non-Hispanic White	1784
Black	226
Hispanic	181
Asian	67
Other	0
Native American	0

**Age**
From 65 to 74	711
From 75 to 84	553
85 and over	390
Less than 65	665

Conditions of Medicare patients treated by Dr. Thomas Aaron Risser, MD in 2014

Hypertension	75
High Cholesterol	55
Stroke	11
Ischemic Heart Disease	53
Depression	46
Chronic Kidney Disease	46
Asthma	16
Osteoperosis	10
Atrial Fibrilation	25
Heart Failure	42
Chronic Obstructive Pulmonary Disease	27
Diabetes	40
Dementia	19
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Thomas Aaron Risser, MD treated as a critical care physician in Cambridge, MA during 2015 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Aaron Risser, MD for Medicare patients.

cardiac procedures	399
doctor visit	495
hospital care	278
inpatient care	278
stress testing	23
ultrasound (sonogram)	454
vascular procedures	55

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Aaron Risser, MD.

**Gender**
Male	2306
Female	2346

**Ethnicity**
Non-Hispanic White	3452
Black	500
Hispanic	408
Asian	0
Other	160
Native American	0

**Age**
From 65 to 74	1536
From 75 to 84	1106
85 and over	742
Less than 65	1268

Conditions of Medicare patients treated by Dr. Thomas Aaron Risser, MD in 2015

Hypertension	75
High Cholesterol	49
Stroke	11
Ischemic Heart Disease	52
Depression	47
Chronic Kidney Disease	47
Asthma	22
Osteoperosis	11
Atrial Fibrilation	23
Heart Failure	39
Chronic Obstructive Pulmonary Disease	27
Diabetes	41
Dementia	22
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Thomas Aaron Risser, MD treated as a critical care physician in Cambridge, MA during 2016 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Aaron Risser, MD for Medicare patients.

cardiac procedures	353
doctor visit	430
hospital care	159
inpatient care	159
ultrasound (sonogram)	391
vascular procedures	38

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Aaron Risser, MD.

**Gender**
Male	959
Female	1012

**Ethnicity**
Non-Hispanic White	1384
Black	230
Hispanic	213
Asian	73
Other	71
Native American	0

**Age**
From 65 to 74	637
From 75 to 84	473
85 and over	312
Less than 65	549

Conditions of Medicare patients treated by Dr. Thomas Aaron Risser, MD in 2016

Hypertension	75
High Cholesterol	47
Stroke	9
Ischemic Heart Disease	52
Depression	42
Chronic Kidney Disease	48
Asthma	33
Osteoperosis	9
Atrial Fibrilation	21
Heart Failure	37
Chronic Obstructive Pulmonary Disease	28
Diabetes	40
Dementia	26
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Thomas Aaron Risser, MD treated as a critical care physician in Cambridge, MA during 2017 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Aaron Risser, MD for Medicare patients.

cardiac procedures	348
doctor visit	442
hospital care	99
inpatient care	99
stress testing	14
ultrasound (sonogram)	360
vascular procedures	12

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Aaron Risser, MD.

**Gender**
Male	883
Female	948

**Ethnicity**
Non-Hispanic White	1308
Black	205
Hispanic	186
Asian	0
Other	77
Native American	0

**Age**
From 65 to 74	572
From 75 to 84	449
85 and over	312
Less than 65	498

Conditions of Medicare patients treated by Dr. Thomas Aaron Risser, MD in 2017

Hypertension	75
High Cholesterol	43
Stroke	7
Ischemic Heart Disease	50
Depression	42
Chronic Kidney Disease	49
Asthma	14
Osteoperosis	9
Atrial Fibrilation	19
Heart Failure	35
Chronic Obstructive Pulmonary Disease	27
Diabetes	40
Dementia	26
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Thomas Aaron Risser, MD treated as a critical care physician in Cambridge, MA during 2018 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Aaron Risser, MD for Medicare patients.

cardiac procedures	344
doctor visit	448
hospital care	62
inpatient care	62
stress testing	23
ultrasound (sonogram)	380
vascular procedures	36

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Aaron Risser, MD.

**Gender**
Male	847
Female	988

**Ethnicity**
Non-Hispanic White	1321
Black	211
Hispanic	172
Asian	0
Other	72
Native American	0

**Age**
From 65 to 74	598
From 75 to 84	457
85 and over	314
Less than 65	466

Conditions of Medicare patients treated by Dr. Thomas Aaron Risser, MD in 2018

Hypertension	75
High Cholesterol	55
Stroke	9
Ischemic Heart Disease	52
Depression	46
Chronic Kidney Disease	50
Asthma	15
Osteoperosis	10
Atrial Fibrilation	19
Heart Failure	36
Chronic Obstructive Pulmonary Disease	26
Diabetes	40
Dementia	26
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Thomas Aaron Risser, MD treated as a critical care physician in Cambridge, MA during 2019 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Aaron Risser, MD for Medicare patients.

cardiac procedures	335
doctor visit	413
hospital care	82
inpatient care	82
stress testing	26
ultrasound (sonogram)	365
vascular procedures	30

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Aaron Risser, MD.

**Gender**
Male	811
Female	871

**Ethnicity**
Non-Hispanic White	1201
Black	164
Hispanic	190
Asian	60
Other	67
Native American	0

**Age**
From 65 to 74	595
From 75 to 84	434
85 and over	275
Less than 65	378

Conditions of Medicare patients treated by Dr. Thomas Aaron Risser, MD in 2019

Hypertension	75
High Cholesterol	53
Stroke	8
Ischemic Heart Disease	53
Depression	46
Chronic Kidney Disease	52
Asthma	13
Osteoperosis	10
Atrial Fibrilation	20
Heart Failure	35
Chronic Obstructive Pulmonary Disease	29
Diabetes	42
Dementia	25
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Thomas Aaron Risser, MD treated as a critical care physician in Cambridge, MA during 2020 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Aaron Risser, MD for Medicare patients.

cardiac procedures	231
doctor visit	182
hospital care	47
inpatient care	47
ultrasound (sonogram)	243
vascular procedures	12

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Aaron Risser, MD.

**Gender**
Male	649
Female	623

**Ethnicity**
Non-Hispanic White	895
Black	158
Hispanic	129
Asian	0
Other	63
Native American	0

**Age**
From 65 to 74	462
From 75 to 84	347
85 and over	193
Less than 65	270

Conditions of Medicare patients treated by Dr. Thomas Aaron Risser, MD in 2020

Hypertension	75
High Cholesterol	55
Stroke	9
Ischemic Heart Disease	52
Depression	46
Chronic Kidney Disease	53
Asthma	11
Osteoperosis	11
Atrial Fibrilation	19
Heart Failure	36
Chronic Obstructive Pulmonary Disease	24
Diabetes	43
Dementia	26
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Thomas Aaron Risser, MD treated as a critical care physician in Cambridge, MA during 2021 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Aaron Risser, MD for Medicare patients.

cardiac procedures	234
doctor visit	163
hospital care	71
inpatient care	71
stress testing	12
ultrasound (sonogram)	234

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Aaron Risser, MD.

**Gender**
Male	539
Female	539

**Ethnicity**
Non-Hispanic White	722
Black	133
Hispanic	125
Asian	36
Other	62
Native American	0

**Age**
From 65 to 74	399
From 75 to 84	306
85 and over	168
Less than 65	205

Conditions of Medicare patients treated by Dr. Thomas Aaron Risser, MD in 2021

Hypertension	75
High Cholesterol	51
Stroke	8
Ischemic Heart Disease	50
Depression	44
Chronic Kidney Disease	49
Asthma	12
Osteoperosis	10
Atrial Fibrilation	19
Heart Failure	34
Chronic Obstructive Pulmonary Disease	24
Diabetes	42
Dementia	24
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Thomas Aaron Risser, MD treated as a critical care physician in Cambridge, MA during 2022 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Aaron Risser, MD for Medicare patients.

cardiac procedures	214
doctor visit	188
hospital care	74
inpatient care	74
stress testing	15
ultrasound (sonogram)	214

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Aaron Risser, MD.

**Gender**
Male	474
Female	495

**Ethnicity**
Non-Hispanic White	655
Black	116
Hispanic	104
Asian	0
Other	59
Native American	0

**Age**
From 65 to 74	345
From 75 to 84	308
85 and over	143
Less than 65	173

Conditions of Medicare patients treated by Dr. Thomas Aaron Risser, MD in 2022

Hypertension	75
High Cholesterol	65
Stroke	18
Ischemic Heart Disease	42
Depression	38
Chronic Kidney Disease	35
Asthma	16
Osteoperosis	14
Atrial Fibrilation	28
Heart Failure	33
Chronic Obstructive Pulmonary Disease	24
Diabetes	42
Dementia	18
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Thomas Aaron Risser, MD for Medicare patients.

The highest averages for the top procedures that Dr. Thomas Aaron Risser, MD treated as a critical care physician in Cambridge, MA were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

cardiac procedures	334
doctor visit	385
hospital care	150
inpatient care	150
stress testing	20
ultrasound (sonogram)	363
vascular procedures	38

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Thomas Aaron Risser, MD.

**Gender**
Male	883
Female	924

**Ethnicity**
Black / African American	197
Asian / Pacific Islander	27
Non-Hispanic White	1312
Native American / Alaskan Native	0
Hispanic	173
Other	57

**Age**
75 to 84	451
85 and over	291
Less than 65	471
65 to 74	593

Average of Total of Conditions of Medicare patients treated by Dr. Thomas Aaron Risser, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Thomas Aaron Risser, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	68
High Cholesterol	47
Stroke	9
Ischemic Heart Disease	46
Depression	40
Chronic Kidney Disease	42
Asthma	15
Osteoporosis	9
Heart Failure	33
Chronic Obstructive Pulmonary Disease	23
Diabetes	37
Atrial Fibrillation	19
Cancer	10
Dementia	20

Education & Training

He has a state license in Massachusetts.

Licensed In: Massachusetts

Ratings & Reviews

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General Payments

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

**Payments by Company**
Amgen Inc.	$353 Repatha $239	Corlanor $114
BIOTRONIK INC.	$348 Bradycardia products $217	$131
E.R. Squibb & Sons, L.L.C.	$122 ELIQUIS $122
Abbott Laboratories	$73 CardioMEMS HF System $73

**Types of Payments**
Food and Beverage	$679
Education	$217

Biography

Dr. Thomas Risser, who practices in Cambridge, MA, is a medical specialist in adult critical care and adult cardiology. He attended medical school at Penn State College of Medicine.