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Dr. Daniel Stephen Rengstorff, MD

Accepting New Patients

(Dr. Daniel Rengstorff, M.D.)

(5 Ratings)

Specializes in: Adult Gastroenterology

Georgetown University School of Medicine

218 De Anza Boulevard
San Mateo, CA 94402

(650) 341-9131

Dr. Daniel Stephen Rengstorff, MD is a gastroenterologist in San Mateo, CA specializing in adult gastroenterology. He graduated from Georgetown University School of Medicine. Dr. Daniel Stephen Rengstorff, MD is affiliated with El Camino Health, Dignity Health, Sequoia Hospital and Hill Physicians.

Office Locations

218 De Anza Boulevard
San Mateo, CA 94402

(650) 341-9131

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Sequoia Hospital

2500 Hospital Drive Building 8, Suite B
Mountain View, CA 94040

(650) 964-3636

(650) 368-3836

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Hill Physicians

2900 Whipple Avenue Suite 245
Redwood City, CA 94062

(650) 365-3700

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In The News

“Speaking of decisions, I would never rely on AI or even Google for medical advice about a serious condition, but as an experiment, I did ask ChatGPT what to do if I experience abdominal pain and...”—"Larry Magid: Is artificial intelligence the next search engine?", The Fort Morgan Times, March 2023

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Daniel Stephen Rengstorff, MD treated as a gastroenterologist in San Mateo, CA during 2012 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Daniel Stephen Rengstorff, MD for Medicare patients.

diagnostic procedures	206
doctor visit	447
gastrointestinal procedures	243
hospital care	92
hydrogen breath test	16
inpatient care	92
methane breath test	16
minimally invasive procedures	243
preventive care	37
removal of lesion (e.g. growth)	206

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Daniel Stephen Rengstorff, MD treated as a gastroenterologist in San Mateo, CA during 2013 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Daniel Stephen Rengstorff, MD for Medicare patients.

diagnostic procedures	204
doctor visit	479
gastrointestinal procedures	247
hospital care	77
hydrogen breath test	13
inpatient care	77
methane breath test	13
minimally invasive procedures	247
preventive care	27
removal of lesion (e.g. growth)	204

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD.

**Gender**
Male	193
Female	174

**Ethnicity**
Non-Hispanic White	297
Black	0
Hispanic	32
Asian	21
Other	0
Native American	0

**Age**
From 65 to 74	170
From 75 to 84	128
85 and over	51
Less than 65	18

Conditions of Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD in 2013

Hypertension	65
High Cholesterol	58
Stroke	5
Ischemic Heart Disease	28
Depression	14
Chronic Kidney Disease	26
Asthma	7
Osteoperosis	12
Atrial Fibrilation	18
Heart Failure	19
Chronic Obstructive Pulmonary Disease	12
Diabetes	30
Dementia	8
Cancer	16

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Daniel Stephen Rengstorff, MD treated as a gastroenterologist in San Mateo, CA during 2014 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Daniel Stephen Rengstorff, MD for Medicare patients.

diagnostic procedures	164
doctor visit	407
gastrointestinal procedures	229
hospital care	41
injections	11
inpatient care	41
minimally invasive procedures	229
preventive care	38
removal of lesion (e.g. growth)	164

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD.

**Gender**
Male	185
Female	182

**Ethnicity**
Non-Hispanic White	292
Black	0
Hispanic	31
Asian	21
Other	0
Native American	0

**Age**
From 65 to 74	172
From 75 to 84	109
85 and over	57
Less than 65	29

Conditions of Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD in 2014

Hypertension	67
High Cholesterol	59
Stroke	5
Ischemic Heart Disease	29
Depression	14
Chronic Kidney Disease	26
Asthma	8
Osteoperosis	14
Atrial Fibrilation	18
Heart Failure	21
Chronic Obstructive Pulmonary Disease	14
Diabetes	31
Dementia	7
Cancer	16

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Daniel Stephen Rengstorff, MD treated as a gastroenterologist in San Mateo, CA during 2015 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Daniel Stephen Rengstorff, MD for Medicare patients.

diagnostic procedures	160
doctor visit	398
gastrointestinal procedures	202
hospital care	47
inpatient care	47
minimally invasive procedures	202
preventive care	29
removal of lesion (e.g. growth)	160

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD.

**Gender**
Male	326
Female	358

**Ethnicity**
Non-Hispanic White	590
Black	0
Hispanic	38
Asian	0
Other	28
Native American	0

**Age**
From 65 to 74	286
From 75 to 84	204
85 and over	154
Less than 65	40

Conditions of Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD in 2015

Hypertension	68
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	30
Depression	16
Chronic Kidney Disease	28
Asthma	10
Osteoperosis	15
Atrial Fibrilation	19
Heart Failure	18
Chronic Obstructive Pulmonary Disease	13
Diabetes	30
Dementia	7
Cancer	15

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Daniel Stephen Rengstorff, MD treated as a gastroenterologist in San Mateo, CA during 2016 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Daniel Stephen Rengstorff, MD for Medicare patients.

diagnostic procedures	154
doctor visit	339
gastrointestinal procedures	154
hospital care	34
inpatient care	34
minimally invasive procedures	154
removal of lesion (e.g. growth)	154

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD.

**Gender**
Male	152
Female	176

**Ethnicity**
Non-Hispanic White	277
Black	0
Hispanic	26
Asian	11
Other	0
Native American	0

**Age**
From 65 to 74	140
From 75 to 84	107
85 and over	64
Less than 65	17

Conditions of Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD in 2016

Hypertension	68
High Cholesterol	61
Stroke	4
Ischemic Heart Disease	29
Depression	15
Chronic Kidney Disease	30
Asthma	14
Osteoperosis	14
Atrial Fibrilation	14
Heart Failure	16
Chronic Obstructive Pulmonary Disease	12
Diabetes	28
Dementia	7
Cancer	17

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Daniel Stephen Rengstorff, MD treated as a gastroenterologist in San Mateo, CA during 2017 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Daniel Stephen Rengstorff, MD for Medicare patients.

diagnostic procedures	176
doctor visit	378
gastrointestinal procedures	217
hospital care	33
inpatient care	33
minimally invasive procedures	217
preventive care	30
removal of lesion (e.g. growth)	176

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD.

**Gender**
Male	173
Female	174

**Ethnicity**
Non-Hispanic White	286
Black	0
Hispanic	26
Asian	18
Other	0
Native American	0

**Age**
From 65 to 74	178
From 75 to 84	111
85 and over	44
Less than 65	14

Conditions of Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD in 2017

Hypertension	58
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	30
Depression	14
Chronic Kidney Disease	27
Asthma	7
Osteoperosis	14
Atrial Fibrilation	14
Heart Failure	14
Chronic Obstructive Pulmonary Disease	12
Diabetes	27
Dementia	5
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Daniel Stephen Rengstorff, MD treated as a gastroenterologist in San Mateo, CA during 2018 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Daniel Stephen Rengstorff, MD for Medicare patients.

diagnostic procedures	164
doctor visit	316
gastrointestinal procedures	183
hospital care	14
inpatient care	14
minimally invasive procedures	183
preventive care	19
removal of lesion (e.g. growth)	164

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD.

**Gender**
Male	157
Female	155

**Ethnicity**
Non-Hispanic White	251
Black	0
Hispanic	22
Asian	18
Other	0
Native American	0

**Age**
From 65 to 74	156
From 75 to 84	116
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD in 2018

Hypertension	60
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	30
Depression	16
Chronic Kidney Disease	28
Asthma	6
Osteoperosis	16
Atrial Fibrilation	12
Heart Failure	15
Chronic Obstructive Pulmonary Disease	15
Diabetes	27
Dementia	7
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Daniel Stephen Rengstorff, MD treated as a gastroenterologist in San Mateo, CA during 2019 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Daniel Stephen Rengstorff, MD for Medicare patients.

diagnostic procedures	197
doctor visit	349
gastrointestinal procedures	232
minimally invasive procedures	232
preventive care	35
removal of lesion (e.g. growth)	197

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD.

**Gender**
Male	178
Female	155

**Ethnicity**
Non-Hispanic White	275
Black	0
Hispanic	24
Asian	16
Other	0
Native American	0

**Age**
From 65 to 74	149
From 75 to 84	140
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD in 2019

Hypertension	64
High Cholesterol	64
Stroke	4
Ischemic Heart Disease	34
Depression	14
Chronic Kidney Disease	29
Asthma	9
Osteoperosis	16
Atrial Fibrilation	14
Heart Failure	16
Chronic Obstructive Pulmonary Disease	11
Diabetes	28
Dementia	7
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Daniel Stephen Rengstorff, MD treated as a gastroenterologist in San Mateo, CA during 2020 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Daniel Stephen Rengstorff, MD for Medicare patients.

diagnostic procedures	142
doctor visit	306
gastrointestinal procedures	157
hospital care	17
inpatient care	17
minimally invasive procedures	157
preventive care	15
removal of lesion (e.g. growth)	142

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD.

**Gender**
Male	148
Female	116

**Ethnicity**
Non-Hispanic White	218
Black	0
Hispanic	19
Asian	15
Other	0
Native American	0

**Age**
From 65 to 74	121
From 75 to 84	97
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD in 2020

Hypertension	59
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	36
Depression	13
Chronic Kidney Disease	25
Asthma	6
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	16
Chronic Obstructive Pulmonary Disease	7
Diabetes	22
Dementia	6
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Daniel Stephen Rengstorff, MD treated as a gastroenterologist in San Mateo, CA during 2021 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Daniel Stephen Rengstorff, MD for Medicare patients.

diagnostic procedures	129
doctor visit	257
gastrointestinal procedures	185
minimally invasive procedures	185
preventive care	45
removal of lesion (e.g. growth)	129

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD.

**Gender**
Male	156
Female	110

**Ethnicity**
Non-Hispanic White	214
Black	0
Hispanic	16
Asian	0
Other	19
Native American	0

**Age**
From 65 to 74	128
From 75 to 84	106
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD in 2021

Hypertension	61
High Cholesterol	69
Stroke	0
Ischemic Heart Disease	35
Depression	11
Chronic Kidney Disease	24
Asthma	7
Osteoperosis	16
Atrial Fibrilation	14
Heart Failure	14
Chronic Obstructive Pulmonary Disease	8
Diabetes	23
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Daniel Stephen Rengstorff, MD treated as a gastroenterologist in San Mateo, CA during 2022 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Daniel Stephen Rengstorff, MD for Medicare patients.

diagnostic procedures	144
doctor visit	229
gastrointestinal procedures	198
minimally invasive procedures	198
preventive care	41
removal of lesion (e.g. growth)	144

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD.

**Gender**
Male	155
Female	120

**Ethnicity**
Non-Hispanic White	220
Black	0
Hispanic	0
Asian	18
Other	24
Native American	0

**Age**
From 65 to 74	137
From 75 to 84	102
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD in 2022

Hypertension	69
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	27
Depression	11
Chronic Kidney Disease	18
Asthma	9
Osteoperosis	23
Atrial Fibrilation	21
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	24
Dementia	0
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Daniel Stephen Rengstorff, MD for Medicare patients.

The highest averages for the top procedures that Dr. Daniel Stephen Rengstorff, MD treated as a gastroenterologist in San Mateo, CA were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

diagnostic procedures	167
doctor visit	355
gastrointestinal procedures	204
hospital care	44
hydrogen breath test	14
injections	11
inpatient care	44
methane breath test	14
minimally invasive procedures	204
preventive care	31
removal of lesion (e.g. growth)	167

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD.

**Gender**
Female	156
Male	165

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	12
Non-Hispanic White	265
Hispanic	21
Native American / Alaskan Native	0
Other	6

**Age**
85 and over	33
75 to 84	110
Less than 65	10
65 to 74	148

Average of Total of Conditions of Medicare patients treated by Dr. Daniel Stephen Rengstorff, MD From 2012 - 2022

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

Hypertension	58
High Cholesterol	56
Stroke	2
Ischemic Heart Disease	28
Depression	12
Chronic Kidney Disease	23
Asthma	7
Osteoporosis	13
Heart Failure	14
Chronic Obstructive Pulmonary Disease	10
Diabetes	24
Atrial Fibrillation	14
Dementia	5
Cancer	13

Education & Training

Dr. Daniel Stephen Rengstorff, MD graduated from Georgetown University School of Medicine. He completed residency at Vanderbilt University Medical Center. He is certified by the Board Certification: Gastroenterology and has a state license in California.

Medical School: Georgetown University School of Medicine

Residency: Vanderbilt University Medical Center

Board Certification: Board Certification: Gastroenterology

Licensed In: California

Affiliations & Hospitals

Dr. Daniel Stephen Rengstorff, MD is associated with these hospitals and organizations:

El Camino Health

Dignity Health

Sequoia Hospital

Hill Physicians

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Daniel Stephen Rengstorff, MD appears to accept the following insurance providers: Cigna, Aetna, Blue Shield of California, UnitedHealthcare, Anthem, Health Net, Central Health Plan, CCHP Health Plan (Chinese Community Health Plan) and Canopy Health.

Insurance Accepted by Provider includes:

According to our sources, Dr. Daniel Stephen Rengstorff, MD accepts the following insurance providers:

Cigna

Aetna

Blue Shield of California

UnitedHealthcare

Anthem

Health Net

Central Health Plan

CCHP Health Plan (Chinese Community Health Plan)

Canopy Health

Ratings & Reviews

Dr. Daniel Stephen Rengstorff, MD has a good overall rating with an average of 3.4 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. Daniel Stephen Rengstorff, MD from all over the web to help you find the right in San Mateo, CA.

3.4

Overall Rating

(5 Ratings)

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General Payments

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

**Payments by Company**
Boston Scientific Corporation	$144 RESOLUTION CLIP $18	GENERAL POLYPECTOMY $15	$111
AbbVie, Inc.	$60 Creon $37	Humira $24
AbbVie Inc.	$53 Skyrizi $25	LINZESS $14	Rinvoq $13
Gilead Sciences Inc	$40 $40
Covidien LP	$35 GI Solutions $35
Other	$58 ZINPLAVA $20	LINZESS $16	$22

**Types of Payments**
Food and Beverage	$390

Biography

Dr. Daniel Rengstorff sees patients in San Mateo, CA, Redwood City, CA, and Mountain View, CA. His medical specialty is adult gastroenterology. Patient reviews placed him at an average of 3.5 stars (out of 5). Dr. Rengstorff is affiliated with Sequoia Hospital, El Camino Health, and Hill Physicians. He usually is in-network for Blue Shield, Health Net, and Anthem, as well as other insurance carriers. Hill Physicians reports that Dr. Rengstorff is accepting new patients at his office in Redwood City, CA. Before performing his residency at Vanderbilt University Medical Center, Dr. Rengstorff attended Georgetown University School of Medicine.