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Dr. Fred John Vonstieff, MD

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Specializes in: Addiction Medicine

University of California, Irvine, School of Medicine

Professional interests include: detoxification

2481 Pacheco Street
Concord, CA 94520

(925) 680-8933

Dr. Fred John Vonstieff, MD is an addiction medicine doctor in Concord, CA specializing in addiction medicine. He graduated from University of California, Irvine, School of Medicine. Dr. Fred John Vonstieff, MD is affiliated with John Muir Health.

Office Locations

John Muir Health

2481 Pacheco Street
Concord, CA 94520

(925) 680-8933

(925) 680-7635

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In The News

“Addiction specialist Dr. Fred Von Stieff told KPIX 5 that dealers have begun lacing Xanex with fentanyl for a more potent high.”—"Fentanyl May Have Caused 2 Fatal Teen Drug Overdoses In Livermore", CBS News, October 2018

Noteworthy Medicare Patient Procedures Performed by Dr. Fred John Vonstieff, MD in 2023

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

Top 25%

By Volume:

inpatient hospital care

In 2012, Dr. Fred John Vonstieff, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of providers in related specialties within California.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Fred John Vonstieff, MD treated as an addiction medicine doctor in Concord, CA during 2012 were hospital care, inpatient care, lab tests and aspiration.

Volume of procedures performed by Dr. Fred John Vonstieff, MD for Medicare patients.

aspiration	19
doctor visit	556
hospital care	618
injections	19
inpatient care	618
lab tests	63
preventive care	18
vaccines	18

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Fred John Vonstieff, MD treated as an addiction medicine doctor in Concord, CA during 2013 were hospital care, inpatient care, lab tests and preventive care.

Volume of procedures performed by Dr. Fred John Vonstieff, MD for Medicare patients.

aspiration	21
doctor visit	558
hospital care	709
injections	21
inpatient care	709
lab tests	58
preventive care	44
vaccines	44

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Fred John Vonstieff, MD.

**Gender**
Male	145
Female	138

**Ethnicity**
Non-Hispanic White	249
Black	0
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	114
From 75 to 84	47
85 and over	28
Less than 65	94

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2013

Hypertension	54
High Cholesterol	35
Stroke	4
Ischemic Heart Disease	22
Depression	49
Chronic Kidney Disease	26
Asthma	8
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	13
Diabetes	23
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Fred John Vonstieff, MD treated as an addiction medicine doctor in Concord, CA during 2014 were hospital care, inpatient care, lab tests and preventive care.

Volume of procedures performed by Dr. Fred John Vonstieff, MD for Medicare patients.

aspiration	24
doctor visit	561
ear procedures	14
hospital care	552
injections	24
inpatient care	552
lab tests	67
preventive care	37
vaccines	37

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Fred John Vonstieff, MD.

**Gender**
Male	131
Female	127

**Ethnicity**
Non-Hispanic White	217
Black	11
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	105
From 75 to 84	42
85 and over	28
Less than 65	83

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2014

Hypertension	61
High Cholesterol	34
Stroke	5
Ischemic Heart Disease	22
Depression	45
Chronic Kidney Disease	25
Asthma	7
Osteoperosis	0
Atrial Fibrilation	9
Heart Failure	12
Chronic Obstructive Pulmonary Disease	15
Diabetes	24
Dementia	13
Cancer	8

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Fred John Vonstieff, MD treated as an addiction medicine doctor in Concord, CA during 2015 were hospital care, inpatient care, lab tests and aspiration.

Volume of procedures performed by Dr. Fred John Vonstieff, MD for Medicare patients.

aspiration	34
doctor visit	565
hospital care	707
injections	34
inpatient care	707
lab tests	52
preventive care	31
vaccines	31

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Fred John Vonstieff, MD.

**Gender**
Male	266
Female	256

**Ethnicity**
Non-Hispanic White	418
Black	26
Hispanic	38
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	198
From 75 to 84	86
85 and over	56
Less than 65	182

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2015

Hypertension	64
High Cholesterol	40
Stroke	5
Ischemic Heart Disease	24
Depression	45
Chronic Kidney Disease	26
Asthma	14
Osteoperosis	6
Atrial Fibrilation	7
Heart Failure	10
Chronic Obstructive Pulmonary Disease	16
Diabetes	25
Dementia	10
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Fred John Vonstieff, MD treated as an addiction medicine doctor in Concord, CA during 2016 were hospital care, inpatient care, preventive care and vaccines.

Volume of procedures performed by Dr. Fred John Vonstieff, MD for Medicare patients.

aspiration	18
doctor visit	465
hospital care	562
injections	18
inpatient care	562
lab tests	28
preventive care	32
vaccines	32

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Fred John Vonstieff, MD.

**Gender**
Male	152
Female	118

**Ethnicity**
Non-Hispanic White	221
Black	12
Hispanic	17
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	110
From 75 to 84	39
85 and over	26
Less than 65	95

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2016

Hypertension	66
High Cholesterol	36
Stroke	5
Ischemic Heart Disease	21
Depression	49
Chronic Kidney Disease	27
Asthma	20
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	10
Chronic Obstructive Pulmonary Disease	19
Diabetes	23
Dementia	10
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Fred John Vonstieff, MD treated as an addiction medicine doctor in Concord, CA during 2017 were hospital care, inpatient care and lab tests.

Volume of procedures performed by Dr. Fred John Vonstieff, MD for Medicare patients.

doctor visit	386
hospital care	765
inpatient care	765
lab tests	24

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Fred John Vonstieff, MD.

**Gender**
Male	152
Female	108

**Ethnicity**
Non-Hispanic White	208
Black	16
Hispanic	22
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	107
From 75 to 84	47
85 and over	21
Less than 65	85

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2017

Hypertension	65
High Cholesterol	33
Stroke	0
Ischemic Heart Disease	20
Depression	61
Chronic Kidney Disease	34
Asthma	8
Osteoperosis	6
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	20
Diabetes	22
Dementia	17
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Fred John Vonstieff, MD treated as an addiction medicine doctor in Concord, CA during 2018 were hospital care, inpatient care, aspiration and injections.

Volume of procedures performed by Dr. Fred John Vonstieff, MD for Medicare patients.

aspiration	18
doctor visit	375
hospital care	549
injections	18
inpatient care	549
lab tests	16
preventive care	15
vaccines	15

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Fred John Vonstieff, MD.

**Gender**
Male	127
Female	92

**Ethnicity**
Non-Hispanic White	186
Black	0
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	104
From 75 to 84	41
85 and over	15
Less than 65	59

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2018

Hypertension	67
High Cholesterol	49
Stroke	6
Ischemic Heart Disease	24
Depression	55
Chronic Kidney Disease	31
Asthma	9
Osteoperosis	0
Atrial Fibrilation	8
Heart Failure	14
Chronic Obstructive Pulmonary Disease	21
Diabetes	20
Dementia	13
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Fred John Vonstieff, MD treated as an addiction medicine doctor in Concord, CA during 2019 were hospital care, inpatient care, aspiration and injections.

Volume of procedures performed by Dr. Fred John Vonstieff, MD for Medicare patients.

aspiration	17
doctor visit	304
hospital care	276
injections	17
inpatient care	276

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Fred John Vonstieff, MD.

**Gender**
Male	86
Female	84

**Ethnicity**
Non-Hispanic White	149
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	80
From 75 to 84	45
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2019

Hypertension	54
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	22
Depression	45
Chronic Kidney Disease	35
Asthma	6
Osteoperosis	0
Atrial Fibrilation	8
Heart Failure	9
Chronic Obstructive Pulmonary Disease	12
Diabetes	25
Dementia	12
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Fred John Vonstieff, MD treated as an addiction medicine doctor in Concord, CA during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Fred John Vonstieff, MD for Medicare patients.

doctor visit	324
hospital care	260
inpatient care	260

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Fred John Vonstieff, MD.

**Gender**
Male	109
Female	83

**Ethnicity**
Non-Hispanic White	156
Black	0
Hispanic	0
Asian	12
Other	0
Native American	0

**Age**
From 65 to 74	99
From 75 to 84	38
85 and over	14
Less than 65	41

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2020

Hypertension	53
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	23
Depression	36
Chronic Kidney Disease	35
Asthma	0
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	9
Chronic Obstructive Pulmonary Disease	15
Diabetes	26
Dementia	14
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Fred John Vonstieff, MD treated as an addiction medicine doctor in Concord, CA during 2021 were hospital care, inpatient care and lab tests.

Volume of procedures performed by Dr. Fred John Vonstieff, MD for Medicare patients.

doctor visit	227
hospital care	297
inpatient care	297
lab tests	16

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Fred John Vonstieff, MD.

**Gender**
Male	105
Female	71

**Ethnicity**
Non-Hispanic White	155
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	94
From 75 to 84	33
85 and over	18
Less than 65	31

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2021

Hypertension	63
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	25
Depression	45
Chronic Kidney Disease	30
Asthma	7
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	9
Diabetes	20
Dementia	14
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Fred John Vonstieff, MD treated as an addiction medicine doctor in Concord, CA during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Fred John Vonstieff, MD for Medicare patients.

hospital care	423
inpatient care	423

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Fred John Vonstieff, MD.

**Gender**
Male	43
Female	29

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

**Age**
From 65 to 74	31
From 75 to 84	0
85 and over	0
Less than 65	28

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2022

Hypertension	75
High Cholesterol	61
Stroke	0
Ischemic Heart Disease	24
Depression	75
Chronic Kidney Disease	0
Asthma	19
Osteoperosis	0
Atrial Fibrilation	19
Heart Failure	15
Chronic Obstructive Pulmonary Disease	25
Diabetes	19
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Fred John Vonstieff, MD for Medicare patients.

The highest averages for the top procedures that Dr. Fred John Vonstieff, MD treated as an addiction medicine doctor in Concord, CA were hospital care, inpatient care, lab tests and preventive care.

aspiration	21
doctor visit	432
ear procedures	14
hospital care	519
injections	21
inpatient care	519
lab tests	40
preventive care	29
vaccines	29

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Fred John Vonstieff, MD.

**Gender**
Male	119
Female	100

**Ethnicity**
Black / African American	5
Asian / Pacific Islander	1
Non-Hispanic White	183
Native American / Alaskan Native	0
Hispanic	10
Other	0

**Age**
75 to 84	38
85 and over	18
Less than 65	63
65 to 74	94

Average of Total of Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Fred John Vonstieff, MD treated were hypertension, depression, high cholesterol and chronic kidney disease.

Hypertension	56
High Cholesterol	39
Stroke	2
Ischemic Heart Disease	20
Depression	45
Chronic Kidney Disease	24
Asthma	8
Osteoporosis	1
Heart Failure	10
Chronic Obstructive Pulmonary Disease	15
Diabetes	20
Atrial Fibrillation	9
Dementia	10
Cancer	7

Education & Training

Dr. Fred John Vonstieff, MD graduated from University of California, Irvine, School of Medicine. He completed residency at Contra Costa Regional Medical Center. He is certified by the Certification: American Board of Addiction Medicine and has a state license in California.

Medical School: University of California, Irvine, School of Medicine

Residency: Contra Costa Regional Medical Center

Board Certification: Certification: American Board of Addiction Medicine

Licensed In: California

Affiliations & Hospitals

Dr. Fred John Vonstieff, MD is associated with these hospitals and organizations:

John Muir Health

Ratings & Reviews

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General Payments

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

**Payments by Company**
Otsuka America Pharmaceutical, Inc.	$707 REXULTI $525	ABILIFY TABLET $69	Nuedexta $55	ABILIFY MYCITE $36	$22
Allergan Inc.	$690 VRAYLAR $523	NAMZARIC $49	VIIBRYD $46	SAPHRIS $30	BYSTOLIC $10	Other $32
AstraZeneca Pharmaceuticals LP	$649 SEROQUEL XR $309	FARXIGA $263	BEVESPI AEROSPHERE $22	BYDUREON WEEKLY $14	SYMBICORT $12	Other $28
Actavis Pharma Inc	$196 VIIBRYD $70	NAMZARIC $56	FETZIMA $35	LINZESS $19	SAPHRIS $8	Other $7
Arbor Pharmaceuticals, Inc.	$188 Horizant $188
Other	$1,357 Victoza $147	Trintellix $112	Brintellix $112	QUTENZA $88	TROKENDI XR $82	Other $815

**Types of Payments**
Food and Beverage	$3,391
Education	$245
Consulting Fee	$151

Biography

Dr. Fred Vonstieff is a physician who specializes in family medicine and addiction medicine. Dr. Vonstieff has indicated that his clinical interests include detoxification. He attended the University of California, Irvine, School of Medicine and subsequently trained at Contra Costa Regional Medical Center for residency. He is conversant in Spanish. Dr. Vonstieff is affiliated with John Muir Health. According to John Muir Health, new patients are welcome to contact his office in Concord, CA.

Select Year:

Dr. Fred John Vonstieff, MD

Office Locations

In The News

Noteworthy Medicare Patient Procedures Performed by Dr. Fred John Vonstieff, 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. Fred John Vonstieff, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Fred John Vonstieff, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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