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Dr. Stefan A. Unterhalter, MD

(Dr. Stefan Andrew Unterhalter, M.D.)

(7 Ratings)

Specializes in: Adult Nephrology

University of the Witwatersrand, Johannesburg

9001 Wilshire Boulevard Suite 201
Beverly Hills, CA 90211

(310) 274-2722

Dr. Stefan A. Unterhalter, MD is a nephrologist in Beverly Hills, CA specializing in adult nephrology. He graduated from University of the Witwatersrand, Johannesburg. Dr. Stefan A. Unterhalter, MD is affiliated with Cedars-Sinai.

Office Locations

9001 Wilshire Boulevard Suite 201
Beverly Hills, CA 90211

(310) 274-2722

(310) 275-1082

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In The News

“Stefan Unterhalter, a doctor of internal medicine who has worked in the Brotman burn unit for seven years, said the staff is "stressed...”—"Brotman Medical Closes Its Burn Center : Losses Caused by Cuts in Medicare, Medi-Cal Reimbursements Cited", Los Angeles Times, August 2024

Noteworthy Medicare Patient Procedures Performed by Dr. Stefan A. Unterhalter, MD in 2023

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

Top 5%

By Volume:

diagnostic stool guaiac test

fecal occult blood test

In 2023, Dr. Stefan A. Unterhalter, MD performed more diagnostic stool guaiac test (gFOBT), and fecal occult blood test (FOBT) procedures for Medicare patients than 95% of providers in related specialties within California.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Stefan A. Unterhalter, MD treated as a nephrologist in Beverly Hills, CA during 2012 were hospital care, inpatient care, blood draw and preventive care.

Volume of procedures performed by Dr. Stefan A. Unterhalter, MD for Medicare patients.

blood draw	297
doctor visit	677
hospital care	571
inpatient care	571
lab tests	35
preventive care	71
vaccines	36

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Stefan A. Unterhalter, MD treated as a nephrologist in Beverly Hills, CA during 2013 were hospital care, inpatient care, blood draw and preventive care.

Volume of procedures performed by Dr. Stefan A. Unterhalter, MD for Medicare patients.

blood draw	288
doctor visit	677
hospital care	435
inpatient care	435
lab tests	37
preventive care	96
vaccines	59

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Stefan A. Unterhalter, MD.

**Gender**
Male	131
Female	153

**Ethnicity**
Non-Hispanic White	176
Black	59
Hispanic	28
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	105
From 75 to 84	80
85 and over	58
Less than 65	41

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2013

Hypertension	75
High Cholesterol	58
Stroke	7
Ischemic Heart Disease	42
Depression	22
Chronic Kidney Disease	44
Asthma	8
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	35
Chronic Obstructive Pulmonary Disease	19
Diabetes	36
Dementia	17
Cancer	14

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Stefan A. Unterhalter, MD treated as a nephrologist in Beverly Hills, CA during 2014 were hospital care, inpatient care, blood draw and preventive care.

Volume of procedures performed by Dr. Stefan A. Unterhalter, MD for Medicare patients.

blood draw	224
doctor visit	677
hospital care	338
inpatient care	338
lab tests	54
preventive care	98
vaccines	44

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Stefan A. Unterhalter, MD.

**Gender**
Male	136
Female	152

**Ethnicity**
Non-Hispanic White	191
Black	59
Hispanic	20
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	114
From 75 to 84	89
85 and over	52
Less than 65	33

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2014

Hypertension	69
High Cholesterol	54
Stroke	9
Ischemic Heart Disease	43
Depression	23
Chronic Kidney Disease	42
Asthma	5
Osteoperosis	7
Atrial Fibrilation	13
Heart Failure	34
Chronic Obstructive Pulmonary Disease	16
Diabetes	31
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Stefan A. Unterhalter, MD treated as a nephrologist in Beverly Hills, CA during 2015 were lab tests, hospital care, inpatient care and blood draw.

Volume of procedures performed by Dr. Stefan A. Unterhalter, MD for Medicare patients.

blood draw	297
diabetes management	31
doctor visit	664
hospital care	362
inpatient care	362
lab tests	1148
preventive care	246
thyroid function tests	206
vaccines	43

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Stefan A. Unterhalter, MD.

**Gender**
Male	280
Female	314

**Ethnicity**
Non-Hispanic White	408
Black	102
Hispanic	40
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	258
From 75 to 84	162
85 and over	108
Less than 65	66

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2015

Hypertension	69
High Cholesterol	52
Stroke	7
Ischemic Heart Disease	41
Depression	22
Chronic Kidney Disease	42
Asthma	14
Osteoperosis	7
Atrial Fibrilation	11
Heart Failure	29
Chronic Obstructive Pulmonary Disease	15
Diabetes	33
Dementia	13
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Stefan A. Unterhalter, MD treated as a nephrologist in Beverly Hills, CA during 2016 were hospital care, inpatient care, blood draw and lab tests.

Volume of procedures performed by Dr. Stefan A. Unterhalter, MD for Medicare patients.

blood draw	62
doctor visit	619
hospital care	593
inpatient care	593
lab tests	48
preventive care	48

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Stefan A. Unterhalter, MD.

**Gender**
Male	148
Female	162

**Ethnicity**
Non-Hispanic White	216
Black	55
Hispanic	14
Asian	11
Other	0
Native American	0

**Age**
From 65 to 74	124
From 75 to 84	88
85 and over	67
Less than 65	31

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2016

Hypertension	73
High Cholesterol	59
Stroke	8
Ischemic Heart Disease	48
Depression	29
Chronic Kidney Disease	48
Asthma	18
Osteoperosis	10
Atrial Fibrilation	14
Heart Failure	36
Chronic Obstructive Pulmonary Disease	17
Diabetes	39
Dementia	23
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Stefan A. Unterhalter, MD treated as a nephrologist in Beverly Hills, CA during 2017 were hospital care, inpatient care, blood draw and lab tests.

Volume of procedures performed by Dr. Stefan A. Unterhalter, MD for Medicare patients.

blood draw	315
doctor visit	661
hospital care	478
inpatient care	478
lab tests	65
preventive care	65

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Stefan A. Unterhalter, MD.

**Gender**
Male	145
Female	164

**Ethnicity**
Non-Hispanic White	231
Black	43
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	142
From 75 to 84	86
85 and over	58
Less than 65	23

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2017

Hypertension	70
High Cholesterol	53
Stroke	6
Ischemic Heart Disease	44
Depression	23
Chronic Kidney Disease	42
Asthma	9
Osteoperosis	8
Atrial Fibrilation	13
Heart Failure	29
Chronic Obstructive Pulmonary Disease	13
Diabetes	29
Dementia	16
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Stefan A. Unterhalter, MD treated as a nephrologist in Beverly Hills, CA during 2018 were hospital care, inpatient care, blood draw and lab tests.

Volume of procedures performed by Dr. Stefan A. Unterhalter, MD for Medicare patients.

blood draw	303
cardiac procedures	15
doctor visit	616
hospital care	447
inpatient care	447
lab tests	37
preventive care	14

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Stefan A. Unterhalter, MD.

**Gender**
Male	135
Female	160

**Ethnicity**
Non-Hispanic White	224
Black	35
Hispanic	12
Asian	13
Other	0
Native American	0

**Age**
From 65 to 74	123
From 75 to 84	90
85 and over	58
Less than 65	24

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2018

Hypertension	69
High Cholesterol	58
Stroke	8
Ischemic Heart Disease	49
Depression	27
Chronic Kidney Disease	42
Asthma	9
Osteoperosis	9
Atrial Fibrilation	16
Heart Failure	34
Chronic Obstructive Pulmonary Disease	15
Diabetes	30
Dementia	18
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Stefan A. Unterhalter, MD treated as a nephrologist in Beverly Hills, CA during 2019 were hospital care, inpatient care, blood draw and cardiac procedures.

Volume of procedures performed by Dr. Stefan A. Unterhalter, MD for Medicare patients.

blood draw	294
cardiac procedures	29
doctor visit	635
hospital care	490
inpatient care	490
lab tests	26

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Stefan A. Unterhalter, MD.

**Gender**
Male	148
Female	170

**Ethnicity**
Non-Hispanic White	236
Black	41
Hispanic	13
Asian	15
Other	0
Native American	0

**Age**
From 65 to 74	138
From 75 to 84	92
85 and over	63
Less than 65	25

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2019

Hypertension	69
High Cholesterol	61
Stroke	9
Ischemic Heart Disease	47
Depression	25
Chronic Kidney Disease	41
Asthma	8
Osteoperosis	12
Atrial Fibrilation	13
Heart Failure	34
Chronic Obstructive Pulmonary Disease	14
Diabetes	30
Dementia	18
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Stefan A. Unterhalter, MD treated as a nephrologist in Beverly Hills, CA during 2020 were blood draw, hospital care, inpatient care and lab tests.

Volume of procedures performed by Dr. Stefan A. Unterhalter, MD for Medicare patients.

blood draw	105
cardiac procedures	13
doctor visit	741
hospital care	97
inpatient care	97
lab tests	13

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Stefan A. Unterhalter, MD.

**Gender**
Male	109
Female	140

**Ethnicity**
Non-Hispanic White	205
Black	16
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	118
From 75 to 84	78
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2020

Hypertension	61
High Cholesterol	57
Stroke	0
Ischemic Heart Disease	45
Depression	20
Chronic Kidney Disease	34
Asthma	6
Osteoperosis	11
Atrial Fibrilation	10
Heart Failure	21
Chronic Obstructive Pulmonary Disease	7
Diabetes	22
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Stefan A. Unterhalter, MD treated as a nephrologist in Beverly Hills, CA during 2021 were blood draw, lab tests and cardiac procedures.

Volume of procedures performed by Dr. Stefan A. Unterhalter, MD for Medicare patients.

blood draw	236
cardiac procedures	15
doctor visit	689
lab tests	24

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Stefan A. Unterhalter, MD.

**Gender**
Male	131
Female	160

**Ethnicity**
Non-Hispanic White	240
Black	15
Hispanic	0
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	142
From 75 to 84	89
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2021

Hypertension	63
High Cholesterol	57
Stroke	0
Ischemic Heart Disease	44
Depression	20
Chronic Kidney Disease	31
Asthma	5
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	5
Diabetes	22
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Stefan A. Unterhalter, MD treated as a nephrologist in Beverly Hills, CA during 2022 were blood draw, hospital care, inpatient care and lab tests.

Volume of procedures performed by Dr. Stefan A. Unterhalter, MD for Medicare patients.

blood draw	244
cardiac procedures	17
doctor visit	661
hospital care	59
inpatient care	59
lab tests	29

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Stefan A. Unterhalter, MD.

**Gender**
Male	126
Female	147

**Ethnicity**
Non-Hispanic White	232
Black	11
Hispanic	0
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	124
From 75 to 84	93
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2022

Hypertension	69
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	34
Depression	18
Chronic Kidney Disease	24
Asthma	9
Osteoperosis	19
Atrial Fibrilation	14
Heart Failure	15
Chronic Obstructive Pulmonary Disease	8
Diabetes	22
Dementia	6
Cancer	15

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Stefan A. Unterhalter, MD treated as a nephrologist in Beverly Hills, CA during 2023 were hospital care, inpatient care, blood draw and lab tests.

Volume of procedures performed by Dr. Stefan A. Unterhalter, MD for Medicare patients.

blood draw	254
cardiac procedures	26
doctor visit	704
hospital care	341
inpatient care	341
lab tests	35

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Stefan A. Unterhalter, MD.

**Gender**
Male	137
Female	156

**Ethnicity**
Non-Hispanic White	240
Black	18
Hispanic	0
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	129
From 75 to 84	103
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2023

Hypertension	71
High Cholesterol	72
Stroke	10
Ischemic Heart Disease	39
Depression	15
Chronic Kidney Disease	29
Asthma	9
Osteoperosis	17
Atrial Fibrilation	17
Heart Failure	18
Chronic Obstructive Pulmonary Disease	10
Diabetes	25
Dementia	8
Cancer	16

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Stefan A. Unterhalter, MD for Medicare patients.

The highest averages for the top procedures that Dr. Stefan A. Unterhalter, MD treated as a nephrologist in Beverly Hills, CA were hospital care, inpatient care, blood draw and thyroid function tests.

blood draw	243
cardiac procedures	19
diabetes management	31
doctor visit	668
hospital care	382
inpatient care	382
lab tests	129
preventive care	91
thyroid function tests	206
vaccines	45

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Stefan A. Unterhalter, MD.

**Gender**
Female	156
Male	135

**Ethnicity**
Black / African American	37
Asian / Pacific Islander	3
Non-Hispanic White	216
Native American / Alaskan Native	0
Hispanic	11
Other	4

**Age**
75 to 84	87
85 and over	38
Less than 65	20
65 to 74	126

Average of Total of Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD From 2012 - 2023

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

Hypertension	63
High Cholesterol	54
Stroke	6
Ischemic Heart Disease	39
Depression	20
Chronic Kidney Disease	34
Asthma	8
Osteoporosis	10
Heart Failure	25
Chronic Obstructive Pulmonary Disease	11
Diabetes	26
Atrial Fibrillation	12
Dementia	12
Cancer	12

Education & Training

Dr. Stefan A. Unterhalter, MD graduated from University of the Witwatersrand, Johannesburg. He completed residency at The Charlotte Maxeke Johannesburg Academic Hospital. He is certified by the Nephrology, American Board of Internal Medicine Internal Medicine, American Board of Internal Medicine IM/Nephrology, American Board of Internal Medicine General Internal Medicine, American Board of Internal Medicine and has a state license in California.

Medical School: University of the Witwatersrand, Johannesburg

Residency: The Charlotte Maxeke Johannesburg Academic Hospital

Board Certification: Nephrology, American Board of Internal Medicine Internal Medicine, American Board of Internal Medicine IM/Nephrology, American Board of Internal Medicine General Internal Medicine, American Board of Internal Medicine

Licensed In: California

Affiliations & Hospitals

Dr. Stefan A. Unterhalter, MD is associated with these hospitals and organizations:

Cedars-Sinai

Ratings & Reviews

Dr. Stefan A. Unterhalter, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 7 ratings. We collect ratings and reviews of Dr. Stefan A. Unterhalter, MD from all over the web to help you find the right in Beverly Hills, CA.

Overall Rating

(7 Ratings)

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General Payments

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

**Payments by Company**
Alexion Pharmaceuticals, Inc.	$3,390 SOLIRIS $3,233	ULTOMIRIS $29	$128
AstraZeneca Pharmaceuticals LP	$2,778 FARXIGA $1,129	BYDUREON $643	LOKELMA $381	BRILINTA $256	CRESTOR $161	Other $208
Novo Nordisk Inc	$913 Victoza $330	Tresiba $280	Levemir $121	NovoLog Mix 70 30 $21	RYBELSUS $17	Other $144
Novartis Pharmaceuticals Corporation	$773 ENTRESTO $603	$170
Boehringer Ingelheim Pharmaceuticals, Inc.	$716 JARDIANCE $589	GLYXAMBI $126
Other	$5,312 ACTHAR $580	Repatha $381	Kerendia $370	VELTASSA $347	NURTEC ODT $306	Other $3,329

**Types of Payments**
Food and Beverage	$11,426
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$1,500
Travel and Lodging	$753
Education	$203

Biography

Dr. Stefan Unterhalter, who practices in Beverly Hills, CA, is a medical specialist in adult nephrology. He is professionally affiliated with Cedars-Sinai. He attended the University of the Witwatersrand, Johannesburg and then went on to complete his residency at The Charlotte Maxeke Johannesburg Academic Hospital. Dr. Unterhalter's patients gave him an average rating of 5.0 stars (out of 5). According to Cedars-Sinai, Dr. Unterhalter is not acceping new patients at this time.

Select Year:

Dr. Stefan A. Unterhalter, MD

Office Locations

In The News

Noteworthy Medicare Patient Procedures Performed by Dr. Stefan A. Unterhalter, MD in 2023

By Volume:

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD in 2023

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Average Medicare Patient Data From 2012 - 2023

Average of Total of Conditions of Medicare patients treated by Dr. Stefan A. Unterhalter, MD From 2012 - 2023

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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