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Dr. Gregory S. Rihacek, MD

(Dr. Gregory Salvatore Rihacek, MD)

(3 Ratings)

Specializes in: Adult Rheumatology

UMDNJ-Robert Wood Johnson Medical School

19 Clyde Road Suite 101
Somerset, NJ 08873

(732) 568-0023

Dr. Gregory S. Rihacek, MD is a rheumatologist in Somerset, NJ specializing in adult rheumatology. He graduated from UMDNJ-Robert Wood Johnson Medical School. Dr. Gregory S. Rihacek, MD is affiliated with RWJBarnabas Health, Saint Peter's Healthcare System and Robert Wood Johnson University Hospital (RWJUH).

Office Locations

19 Clyde Road Suite 101
Somerset, NJ 08873

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Noteworthy Medicare Patient Procedures Performed by Dr. Gregory S. Rihacek, MD in 2023

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

Top 25%

By Affordability:

blood tests

lab tests

In 2012, Dr. Gregory S. Rihacek, MD had a list price for blood tests, and lab tests that was lower than the list prices billed to Medicare by 75% of providers in related specialties within New Jersey. 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. Gregory S. Rihacek, MD treated as a rheumatologist in Somerset, NJ during 2012 were blood draw, lab tests, aspiration and injections.

Volume of procedures performed by Dr. Gregory S. Rihacek, MD for Medicare patients.

aspiration	141
blood draw	363
doctor visit	1959
hospital care	14
injections	141
inpatient care	14
lab tests	238

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gregory S. Rihacek, MD treated as a rheumatologist in Somerset, NJ during 2013 were blood draw, lab tests, aspiration and injections.

Volume of procedures performed by Dr. Gregory S. Rihacek, MD for Medicare patients.

aspiration	144
blood draw	384
doctor visit	2017
injections	144
lab tests	228

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory S. Rihacek, MD.

**Gender**
Male	113
Female	359

**Ethnicity**
Non-Hispanic White	398
Black	50
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	176
From 75 to 84	155
85 and over	61
Less than 65	80

Conditions of Medicare patients treated by Dr. Gregory S. Rihacek, MD in 2013

Hypertension	72
High Cholesterol	68
Stroke	5
Ischemic Heart Disease	37
Depression	15
Chronic Kidney Disease	20
Asthma	11
Osteoperosis	12
Atrial Fibrilation	12
Heart Failure	20
Chronic Obstructive Pulmonary Disease	12
Diabetes	33
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gregory S. Rihacek, MD treated as a rheumatologist in Somerset, NJ during 2014 were blood draw, lab tests, aspiration and injections.

Volume of procedures performed by Dr. Gregory S. Rihacek, MD for Medicare patients.

aspiration	135
blood draw	328
doctor visit	1897
hospital care	13
injections	135
inpatient care	13
lab tests	228

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory S. Rihacek, MD.

**Gender**
Male	104
Female	359

**Ethnicity**
Non-Hispanic White	375
Black	58
Hispanic	18
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	170
From 75 to 84	147
85 and over	65
Less than 65	81

Conditions of Medicare patients treated by Dr. Gregory S. Rihacek, MD in 2014

Hypertension	70
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	38
Depression	20
Chronic Kidney Disease	22
Asthma	11
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	19
Chronic Obstructive Pulmonary Disease	13
Diabetes	31
Dementia	6
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gregory S. Rihacek, MD treated as a rheumatologist in Somerset, NJ during 2015 were blood draw, lab tests, aspiration and injections.

Volume of procedures performed by Dr. Gregory S. Rihacek, MD for Medicare patients.

aspiration	121
blood draw	291
doctor visit	1892
injections	121
lab tests	209

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory S. Rihacek, MD.

**Gender**
Male	246
Female	680

**Ethnicity**
Non-Hispanic White	750
Black	118
Hispanic	34
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	392
From 75 to 84	264
85 and over	132
Less than 65	138

Conditions of Medicare patients treated by Dr. Gregory S. Rihacek, MD in 2015

Hypertension	72
High Cholesterol	64
Stroke	5
Ischemic Heart Disease	37
Depression	20
Chronic Kidney Disease	24
Asthma	11
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	17
Chronic Obstructive Pulmonary Disease	13
Diabetes	33
Dementia	5
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gregory S. Rihacek, MD treated as a rheumatologist in Somerset, NJ during 2016 were blood draw, lab tests, aspiration and injections.

Volume of procedures performed by Dr. Gregory S. Rihacek, MD for Medicare patients.

aspiration	122
blood draw	164
doctor visit	1769
hospital care	13
injections	122
inpatient care	13
lab tests	146

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory S. Rihacek, MD.

**Gender**
Male	109
Female	320

**Ethnicity**
Non-Hispanic White	347
Black	53
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	182
From 75 to 84	119
85 and over	69
Less than 65	59

Conditions of Medicare patients treated by Dr. Gregory S. Rihacek, MD in 2016

Hypertension	71
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	36
Depression	18
Chronic Kidney Disease	25
Asthma	18
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	13
Diabetes	37
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gregory S. Rihacek, MD treated as a rheumatologist in Somerset, NJ during 2017 were blood draw, injections, lab tests and aspiration.

Volume of procedures performed by Dr. Gregory S. Rihacek, MD for Medicare patients.

aspiration	104
blood draw	128
doctor visit	1511
injections	117
lab tests	115

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory S. Rihacek, MD.

**Gender**
Male	101
Female	289

**Ethnicity**
Non-Hispanic White	325
Black	42
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	166
From 75 to 84	114
85 and over	57
Less than 65	53

Conditions of Medicare patients treated by Dr. Gregory S. Rihacek, MD in 2017

Hypertension	71
High Cholesterol	55
Stroke	5
Ischemic Heart Disease	33
Depression	18
Chronic Kidney Disease	26
Asthma	12
Osteoperosis	13
Atrial Fibrilation	11
Heart Failure	19
Chronic Obstructive Pulmonary Disease	13
Diabetes	32
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gregory S. Rihacek, MD treated as a rheumatologist in Somerset, NJ during 2018 were aspiration, injections, blood draw and lab tests.

Volume of procedures performed by Dr. Gregory S. Rihacek, MD for Medicare patients.

aspiration	110
blood draw	89
doctor visit	1510
injections	110
lab tests	68

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory S. Rihacek, MD.

**Gender**
Male	98
Female	288

**Ethnicity**
Non-Hispanic White	304
Black	46
Hispanic	15
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	158
From 75 to 84	124
85 and over	52
Less than 65	52

Conditions of Medicare patients treated by Dr. Gregory S. Rihacek, MD in 2018

Hypertension	73
High Cholesterol	66
Stroke	5
Ischemic Heart Disease	33
Depression	21
Chronic Kidney Disease	32
Asthma	11
Osteoperosis	16
Atrial Fibrilation	10
Heart Failure	17
Chronic Obstructive Pulmonary Disease	13
Diabetes	36
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gregory S. Rihacek, MD treated as a rheumatologist in Somerset, NJ during 2019 were aspiration, injections, blood draw and lab tests.

Volume of procedures performed by Dr. Gregory S. Rihacek, MD for Medicare patients.

aspiration	99
blood draw	87
doctor visit	1331
injections	99
lab tests	79

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory S. Rihacek, MD.

**Gender**
Male	88
Female	255

**Ethnicity**
Non-Hispanic White	265
Black	39
Hispanic	15
Asian	13
Other	11
Native American	0

**Age**
From 65 to 74	146
From 75 to 84	105
85 and over	47
Less than 65	45

Conditions of Medicare patients treated by Dr. Gregory S. Rihacek, MD in 2019

Hypertension	71
High Cholesterol	66
Stroke	0
Ischemic Heart Disease	33
Depression	22
Chronic Kidney Disease	31
Asthma	11
Osteoperosis	17
Atrial Fibrilation	10
Heart Failure	20
Chronic Obstructive Pulmonary Disease	12
Diabetes	35
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gregory S. Rihacek, MD treated as a rheumatologist in Somerset, NJ during 2020 were aspiration, injections, blood draw and lab tests.

Volume of procedures performed by Dr. Gregory S. Rihacek, MD for Medicare patients.

aspiration	77
blood draw	59
doctor visit	1187
injections	77
lab tests	55

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory S. Rihacek, MD.

**Gender**
Male	88
Female	219

**Ethnicity**
Non-Hispanic White	241
Black	36
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	124
From 75 to 84	101
85 and over	38
Less than 65	44

Conditions of Medicare patients treated by Dr. Gregory S. Rihacek, MD in 2020

Hypertension	69
High Cholesterol	63
Stroke	0
Ischemic Heart Disease	30
Depression	20
Chronic Kidney Disease	35
Asthma	10
Osteoperosis	13
Atrial Fibrilation	10
Heart Failure	19
Chronic Obstructive Pulmonary Disease	12
Diabetes	35
Dementia	6
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gregory S. Rihacek, MD treated as a rheumatologist in Somerset, NJ during 2021 were blood draw, lab tests, aspiration and injections.

Volume of procedures performed by Dr. Gregory S. Rihacek, MD for Medicare patients.

aspiration	67
blood draw	78
doctor visit	1083
injections	67
lab tests	77

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory S. Rihacek, MD.

**Gender**
Male	86
Female	195

**Ethnicity**
Non-Hispanic White	217
Black	29
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	111
From 75 to 84	98
85 and over	31
Less than 65	41

Conditions of Medicare patients treated by Dr. Gregory S. Rihacek, MD in 2021

Hypertension	73
High Cholesterol	75
Stroke	5
Ischemic Heart Disease	38
Depression	23
Chronic Kidney Disease	34
Asthma	11
Osteoperosis	14
Atrial Fibrilation	9
Heart Failure	19
Chronic Obstructive Pulmonary Disease	15
Diabetes	39
Dementia	7
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gregory S. Rihacek, MD treated as a rheumatologist in Somerset, NJ during 2022 were blood draw, lab tests, aspiration and injections.

Volume of procedures performed by Dr. Gregory S. Rihacek, MD for Medicare patients.

aspiration	60
blood draw	67
doctor visit	1110
injections	60
lab tests	65

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory S. Rihacek, MD.

**Gender**
Male	81
Female	206

**Ethnicity**
Non-Hispanic White	221
Black	36
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	122
From 75 to 84	96
85 and over	31
Less than 65	38

Conditions of Medicare patients treated by Dr. Gregory S. Rihacek, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	28
Depression	20
Chronic Kidney Disease	22
Asthma	14
Osteoperosis	23
Atrial Fibrilation	16
Heart Failure	16
Chronic Obstructive Pulmonary Disease	18
Diabetes	38
Dementia	4
Cancer	17

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Gregory S. Rihacek, MD treated as a rheumatologist in Somerset, NJ during 2023 were lab tests, blood draw, aspiration and injections.

Volume of procedures performed by Dr. Gregory S. Rihacek, MD for Medicare patients.

aspiration	46
blood draw	52
doctor visit	1110
injections	46
lab tests	70

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory S. Rihacek, MD.

**Gender**
Male	84
Female	212

**Ethnicity**
Non-Hispanic White	226
Black	36
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	129
From 75 to 84	96
85 and over	32
Less than 65	39

Conditions of Medicare patients treated by Dr. Gregory S. Rihacek, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	26
Depression	18
Chronic Kidney Disease	23
Asthma	13
Osteoperosis	22
Atrial Fibrilation	15
Heart Failure	13
Chronic Obstructive Pulmonary Disease	15
Diabetes	38
Dementia	0
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Gregory S. Rihacek, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gregory S. Rihacek, MD treated as a rheumatologist in Somerset, NJ were blood draw, lab tests, injections and aspiration.

aspiration	102
blood draw	174
doctor visit	1531
hospital care	13
injections	103
inpatient care	13
lab tests	131

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Gregory S. Rihacek, MD.

**Gender**
Female	281
Male	99

**Ethnicity**
Black / African American	45
Asian / Pacific Islander	1
Non-Hispanic White	305
Hispanic	13
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	51
75 to 84	118
Less than 65	55
65 to 74	156

Average of Total of Conditions of Medicare patients treated by Dr. Gregory S. Rihacek, MD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Gregory S. Rihacek, MD treated were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension	66
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	30
Depression	17
Chronic Kidney Disease	24
Asthma	11
Osteoporosis	13
Heart Failure	16
Chronic Obstructive Pulmonary Disease	12
Diabetes	32
Atrial Fibrillation	10
Dementia	5
Cancer	11

Education & Training

Dr. Gregory S. Rihacek, MD graduated from UMDNJ-Robert Wood Johnson Medical School. He completed residency at Beth Israel Deaconess Medical Center. He has a state license in New Jersey.

Medical School: UMDNJ-Robert Wood Johnson Medical School

Residency: Beth Israel Deaconess Medical Center

Licensed In: New Jersey

Affiliations & Hospitals

Dr. Gregory S. Rihacek, MD is associated with these hospitals and organizations:

RWJBarnabas Health

Saint Peter's Healthcare System

Robert Wood Johnson University Hospital (RWJUH)

Ratings & Reviews

Dr. Gregory S. Rihacek, MD has a good overall rating with an average of 2.83 out of 5 stars based on 3 ratings. We collect ratings and reviews of Dr. Gregory S. Rihacek, MD from all over the web to help you find the right in Somerset, NJ.

2.83

Overall Rating

(3 Ratings)

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General Payments

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

**Payments by Company**
Celgene Corporation	$69,069 Otezla $67,641	$1,429
Amgen Inc.	$32,393 Otezla $28,643	Enbrel $1,487	Prolia $1,361	Tavneos $411	KRYSTEXXA $260	Other $231
Mallinckrodt LLC	$21,450 ACTHAR $21,415	XARTEMIS XR $35
AbbVie, Inc.	$15,844 Humira $5,278	Rinvoq $192	Lupron $164	$10,210
Janssen Biotech, Inc.	$12,482 STELARA $6,017	SIMPONI ARIA $2,766	Tremfya $2,097	REMICADE $1,465	SIMPONI $124	Other $13
Other	$54,937 PURIFIED CORTROPHIN GEL $14,850	Cimzia $5,405	BENLYSTA $3,357	Rinvoq $3,284	XELJANZ $3,236	Other $24,806

**Types of Payments**
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$93,694
Food and Beverage	$55,517
Consulting Fee	$28,286
Travel and Lodging	$16,049
Honoraria	$11,555
Other	$1,075

Biography

Dr. Gregory Rihacek's medical specialty is adult rheumatology. His hospital/clinic affiliations include Saint Peter's Healthcare System and Robert Wood Johnson University Hospital (RWJUH). Dr. Rihacek attended UMDNJ-Robert Wood Johnson Medical School and then went on to complete his residency at Beth Israel Deaconess Medical Center.