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Home > MA Providers > Internists & Internal Medicine Doctors

Dr. Wassim Assaf, MD

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Specializes in: Internal Medicine (Adult Medicine) and Sleep Medicine

119 Belmont Street
Worcester, MA 01605

(508) 334-8515

Dr. Wassim Assaf, MD is an internist in Worcester, MA specializing in internal medicine (adult medicine) and sleep medicine.

Office Locations

119 Belmont Street
Worcester, MA 01605

(508) 334-8515

(508) 334-6490

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157 Union Street
Marlborough, MA 01752

(508) 486-5678

(508) 486-5677

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48 Auburn Street Suite 1
Auburn, MA 01501

(774) 772-7058

(774) 772-7059

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55 Lake Avenue N
Worcester, MA 01655

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Noteworthy Medicare Patient Procedures Performed by Dr. Wassim Assaf, MD in 2023

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

Top 25%

By Volume:

CPAP treatment

inpatient hospital care

In 2012, Dr. Wassim Assaf, MD performed more CPAP treatment, and inpatient hospital care (for patient admitted to hospital) 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. Wassim Assaf, MD treated as an internist in Worcester, MA during 2012 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Wassim Assaf, MD for Medicare patients.

hospital care	733
inpatient care	670
outpatient care	63

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Wassim Assaf, MD treated as an internist in Worcester, MA during 2013 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Wassim Assaf, MD for Medicare patients.

hospital care	993
inpatient care	932
outpatient care	61

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Wassim Assaf, MD.

**Gender**
Male	173
Female	245

**Age**
From 65 to 74	96
From 75 to 84	116
85 and over	137
Less than 65	69

Conditions of Medicare patients treated by Dr. Wassim Assaf, MD in 2013

Hypertension	75
High Cholesterol	68
Stroke	9
Ischemic Heart Disease	57
Depression	50
Chronic Kidney Disease	55
Asthma	13
Osteoperosis	17
Atrial Fibrilation	29
Heart Failure	45
Chronic Obstructive Pulmonary Disease	50
Diabetes	39
Dementia	28
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Wassim Assaf, MD treated as an internist in Worcester, MA during 2014 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Wassim Assaf, MD for Medicare patients.

hospital care	898
inpatient care	851
outpatient care	47

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Wassim Assaf, MD.

**Gender**
Male	147
Female	220

**Age**
From 65 to 74	98
From 75 to 84	108
85 and over	97
Less than 65	64

Conditions of Medicare patients treated by Dr. Wassim Assaf, MD in 2014

Hypertension	75
High Cholesterol	71
Stroke	10
Ischemic Heart Disease	56
Depression	50
Chronic Kidney Disease	51
Asthma	19
Osteoperosis	19
Atrial Fibrilation	23
Heart Failure	44
Chronic Obstructive Pulmonary Disease	49
Diabetes	38
Dementia	26
Cancer	16

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Wassim Assaf, MD treated as an internist in Worcester, MA during 2015 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Wassim Assaf, MD for Medicare patients.

hospital care	838
inpatient care	776
outpatient care	62

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Wassim Assaf, MD.

**Gender**
Male	362
Female	518

**Ethnicity**
Non-Hispanic White	850
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	192
From 75 to 84	250
85 and over	268
Less than 65	170

Conditions of Medicare patients treated by Dr. Wassim Assaf, MD in 2015

Hypertension	75
High Cholesterol	74
Stroke	11
Ischemic Heart Disease	59
Depression	50
Chronic Kidney Disease	54
Asthma	36
Osteoperosis	15
Atrial Fibrilation	25
Heart Failure	48
Chronic Obstructive Pulmonary Disease	50
Diabetes	43
Dementia	30
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Wassim Assaf, MD treated as an internist in Worcester, MA during 2016 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Wassim Assaf, MD for Medicare patients.

hospital care	911
inpatient care	786
outpatient care	125

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Wassim Assaf, MD.

**Gender**
Male	160
Female	209

**Age**
From 65 to 74	94
From 75 to 84	107
85 and over	96
Less than 65	72

Conditions of Medicare patients treated by Dr. Wassim Assaf, MD in 2016

Hypertension	75
High Cholesterol	72
Stroke	11
Ischemic Heart Disease	61
Depression	48
Chronic Kidney Disease	55
Asthma	51
Osteoperosis	17
Atrial Fibrilation	29
Heart Failure	45
Chronic Obstructive Pulmonary Disease	47
Diabetes	41
Dementia	28
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Wassim Assaf, MD treated as an internist in Worcester, MA during 2017 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Wassim Assaf, MD for Medicare patients.

hospital care	601
inpatient care	530
outpatient care	71

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Wassim Assaf, MD.

**Gender**
Male	101
Female	114

**Age**
From 65 to 74	49
From 75 to 84	66
85 and over	57
Less than 65	43

Conditions of Medicare patients treated by Dr. Wassim Assaf, MD in 2017

Hypertension	75
High Cholesterol	67
Stroke	6
Ischemic Heart Disease	58
Depression	47
Chronic Kidney Disease	64
Asthma	14
Osteoperosis	13
Atrial Fibrilation	20
Heart Failure	47
Chronic Obstructive Pulmonary Disease	52
Diabetes	42
Dementia	34
Cancer	18

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Wassim Assaf, MD treated as an internist in Worcester, MA during 2018 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Wassim Assaf, MD for Medicare patients.

doctor visit	22
hospital care	287
inpatient care	276
outpatient care	11

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Wassim Assaf, MD.

**Gender**
Male	121
Female	129

**Ethnicity**
Non-Hispanic White	221
Black	12
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	60
From 75 to 84	89
85 and over	53
Less than 65	48

Conditions of Medicare patients treated by Dr. Wassim Assaf, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	55
Depression	42
Chronic Kidney Disease	57
Asthma	14
Osteoperosis	14
Atrial Fibrilation	26
Heart Failure	46
Chronic Obstructive Pulmonary Disease	36
Diabetes	44
Dementia	28
Cancer	19

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Wassim Assaf, MD treated as an internist in Worcester, MA during 2019 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Wassim Assaf, MD for Medicare patients.

hospital care	653
inpatient care	499
outpatient care	154

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Wassim Assaf, MD.

**Gender**
Male	161
Female	181

**Ethnicity**
Non-Hispanic White	300
Black	11
Hispanic	20
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	88
From 75 to 84	89
85 and over	81
Less than 65	84

Conditions of Medicare patients treated by Dr. Wassim Assaf, MD in 2019

Hypertension	75
High Cholesterol	73
Stroke	10
Ischemic Heart Disease	59
Depression	45
Chronic Kidney Disease	0
Asthma	18
Osteoperosis	13
Atrial Fibrilation	27
Heart Failure	47
Chronic Obstructive Pulmonary Disease	40
Diabetes	46
Dementia	31
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Wassim Assaf, MD treated as an internist in Worcester, MA during 2020 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Wassim Assaf, MD for Medicare patients.

doctor visit	17
hospital care	603
inpatient care	560
outpatient care	43

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Wassim Assaf, MD.

**Gender**
Male	168
Female	176

**Ethnicity**
Non-Hispanic White	291
Black	0
Hispanic	28
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	95
From 75 to 84	80
85 and over	65
Less than 65	104

Conditions of Medicare patients treated by Dr. Wassim Assaf, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	56
Depression	53
Chronic Kidney Disease	64
Asthma	18
Osteoperosis	12
Atrial Fibrilation	24
Heart Failure	47
Chronic Obstructive Pulmonary Disease	38
Diabetes	47
Dementia	33
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Wassim Assaf, MD treated as an internist in Worcester, MA during 2021 were hospital care, inpatient care, outpatient care and sleep study.

Volume of procedures performed by Dr. Wassim Assaf, MD for Medicare patients.

doctor visit	58
hospital care	526
inpatient care	504
outpatient care	22
sleep study	14

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Wassim Assaf, MD.

**Gender**
Male	134
Female	169

**Ethnicity**
Non-Hispanic White	274
Black	0
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	94
From 75 to 84	82
85 and over	61
Less than 65	66

Conditions of Medicare patients treated by Dr. Wassim Assaf, MD in 2021

Hypertension	75
High Cholesterol	73
Stroke	14
Ischemic Heart Disease	49
Depression	51
Chronic Kidney Disease	57
Asthma	17
Osteoperosis	17
Atrial Fibrilation	28
Heart Failure	45
Chronic Obstructive Pulmonary Disease	30
Diabetes	38
Dementia	32
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Wassim Assaf, MD treated as an internist in Worcester, MA during 2022 were hospital care, inpatient care, sleep study and airway management.

Volume of procedures performed by Dr. Wassim Assaf, MD for Medicare patients.

airway management	67
doctor visit	76
hospital care	528
inpatient care	528
sleep study	75

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Wassim Assaf, MD.

**Gender**
Male	176
Female	169

**Ethnicity**
Non-Hispanic White	304
Black	11
Hispanic	17
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	132
From 75 to 84	85
85 and over	72
Less than 65	56

Conditions of Medicare patients treated by Dr. Wassim Assaf, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	19
Ischemic Heart Disease	46
Depression	45
Chronic Kidney Disease	40
Asthma	15
Osteoperosis	17
Atrial Fibrilation	39
Heart Failure	40
Chronic Obstructive Pulmonary Disease	32
Diabetes	40
Dementia	23
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Wassim Assaf, MD for Medicare patients.

The highest averages for the top procedures that Dr. Wassim Assaf, MD treated as an internist in Worcester, MA were hospital care, inpatient care, airway management and outpatient care.

airway management	67
doctor visit	43
hospital care	688
inpatient care	628
outpatient care	65
sleep study	44

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Wassim Assaf, MD.

**Gender**
Male	154
Female	193

**Ethnicity**
Black / African American	3
Asian / Pacific Islander	0
Non-Hispanic White	203
Hispanic	7
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	97
85 and over	89
Less than 65	70
65 to 74	90

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

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

Hypertension	68
High Cholesterol	65
Stroke	10
Ischemic Heart Disease	50
Depression	43
Chronic Kidney Disease	45
Asthma	19
Osteoporosis	14
Heart Failure	41
Chronic Obstructive Pulmonary Disease	38
Diabetes	38
Atrial Fibrillation	24
Cancer	13
Dementia	26

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. Wassim Assaf, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Inspire Medical Systems, Inc.	$195 Inspire $195
Jazz Pharmaceuticals Inc.	$16 Xyrem $16
E.R. Squibb & Sons, L.L.C.	$14 CAMZYOS $14

**Types of Payments**
Food and Beverage	$226

Biography

Dr. Wassim Assaf practices sleep medicine in Marlborough, MA, Worcester, MA, and Auburn, MA. Dr. Assaf has obtained a license to practice in Massachusetts.