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Dr. Peter William Simpson, MD, MPH

Accepting New Patients

(144 Ratings)

Specializes in: Adult Gastroenterology

University of California, Davis, School of Medicine

Professional interests include: gastrointestinal bleeding, acid reflux (GERD), heartburn, and more.

701 E. El Camino Real North Wing, 1st Floor
Mountain View, CA 94040

(650) 934-7565

Dr. Peter William Simpson, MD, MPH is a gastroenterologist in Mountain View, CA specializing in adult gastroenterology. He graduated from University of California, Davis, School of Medicine. Dr. Peter William Simpson, MD, MPH is affiliated with El Camino Health and Sutter Health.

Office Locations

Sutter Health

701 E. El Camino Real North Wing, 1st Floor
Mountain View, CA 94040

(650) 934-7575

open_in_new

Some issues Dr. Peter William Simpson, MD, MPH can help you with:

Colonoscopy

Colonoscopy is the use of a special tool called a colonoscope (a thin, flexible tube with a camera on the end) to examine the inside of the colon and rectum. The tube is typically inserted anally, and it allows the physician to examine the large intestine from the inside. It may be done at any time to diagnose bowel problems, but routine colonoscopies are advised after the age of 50 to screen for colon cancer.

A colonoscopy may be performed to diagnose:

Intestinal ulcers
Polyps
Bowel cancer
An unidentified source of pain or bleeding in the intestine

Patients may be asked to drink only liquids in the days before a colonoscopy, or they may be given an enema to remove residual fecal matter. Before the exam, patients are given medication to help them relax, and then lay on their side on a table. The scope is inserted into the anus and gently moved all the way through the large intestine. Air may be pumped into the intestine to improve the view for the physician. Any polyps that are found will be removed. Then the colonoscope will be withdrawn. A colonoscopy is not usually painful, but patients may feel some bloating or have some cramps right afterward. If patients have polyps removed, they might experience a small amount of bleeding. Any side effects should go away within a few hours.

Hemophilia

Hemophilia is a bleeding disorder in which blood cannot clot normally. After an injury, people who have hemophilia bleed longer because they lack certain blood proteins that are responsible for clotting, called clotting factors. Some hemophiliacs are mildly deficient in this protein, so they bleed only when injured or after surgery. Those who are severely deficient, however, may experience symptoms of spontaneous bleeding, including the following:

Presence of blood in stool or urine
Frequent nosebleeds or large bruises
Unusual bleeding after being vaccinated
Pain, swelling, or tightness in joint

Most people with hemophilia have a family history of the disorder, though about 30% do not. The most common forms are hemophilia A (classic hemophilia) and hemophilia B (Christmas disease). Hemophilia A and B share certain characteristics, but different genes are involved. Acquired hemophilia is very rare and has been linked to autoimmune conditions, cancer, and multiple sclerosis.

Hemophilia may be diagnosed using a blood test. If there is family history of the disorder, testing may be done prenatally. Treatment involves regular intravenous replacement of clotting factors, which may be produced in a laboratory (recombinant) or come from blood donors. For people with milder forms of the disease, a hormone called desmopressin may stimulate the body to produce clotting factors. Other drug therapies include medications that help slow the breakdown of blood clots and medications that are applied directly to the wound to promote clotting.

Living with hemophilia can be challenging, but simple things may help prevent excessive bleeding. For example, choosing activities like walking or swimming over contact sports can prevent injuries and strengthen muscles while protecting the joints. Chances for bleeding may also be reduced by making sure that children wear helmets and elbow pads during activities like bicycle rides.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Peter William Simpson, MD, MPH treated as a gastroenterologist in Mountain View, CA during 2012 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Peter William Simpson, MD, MPH for Medicare patients.

diagnostic procedures	124
doctor visit	133
gastrointestinal procedures	161
hospital care	21
injections	25
inpatient care	21
minimally invasive procedures	174
preventive care	12
removal of lesion (e.g. growth)	124

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Peter William Simpson, MD, MPH treated as a gastroenterologist in Mountain View, CA during 2013 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Peter William Simpson, MD, MPH for Medicare patients.

diagnostic procedures	134
doctor visit	143
gastrointestinal procedures	173
hospital care	29
injections	24
inpatient care	29
minimally invasive procedures	173
preventive care	15
removal of lesion (e.g. growth)	134

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter William Simpson, MD, MPH.

**Gender**
Male	105
Female	118

**Ethnicity**
Non-Hispanic White	165
Black	0
Hispanic	16
Asian	29
Other	0
Native American	0

**Age**
From 65 to 74	114
From 75 to 84	71
85 and over	18
Less than 65	20

Conditions of Medicare patients treated by Dr. Peter William Simpson, MD, MPH in 2013

Hypertension	52
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	19
Depression	22
Chronic Kidney Disease	17
Asthma	0
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	0
Diabetes	22
Dementia	6
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Peter William Simpson, MD, MPH treated as a gastroenterologist in Mountain View, CA during 2014 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Peter William Simpson, MD, MPH for Medicare patients.

diagnostic procedures	136
doctor visit	144
gastrointestinal procedures	178
hospital care	15
injections	29
inpatient care	15
minimally invasive procedures	189
preventive care	13
removal of lesion (e.g. growth)	136

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter William Simpson, MD, MPH.

**Gender**
Male	117
Female	129

**Ethnicity**
Non-Hispanic White	167
Black	0
Hispanic	17
Asian	48
Other	0
Native American	0

**Age**
From 65 to 74	129
From 75 to 84	71
85 and over	26
Less than 65	20

Conditions of Medicare patients treated by Dr. Peter William Simpson, MD, MPH in 2014

Hypertension	50
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	22
Depression	16
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	7
Atrial Fibrilation	8
Heart Failure	15
Chronic Obstructive Pulmonary Disease	9
Diabetes	27
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Peter William Simpson, MD, MPH treated as a gastroenterologist in Mountain View, CA during 2015 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Peter William Simpson, MD, MPH for Medicare patients.

diagnostic procedures	176
doctor visit	159
gastrointestinal procedures	260
injections	37
minimally invasive procedures	260
preventive care	36
removal of lesion (e.g. growth)	176

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter William Simpson, MD, MPH.

**Gender**
Male	274
Female	286

**Ethnicity**
Non-Hispanic White	388
Black	0
Hispanic	40
Asian	94
Other	0
Native American	0

**Age**
From 65 to 74	336
From 75 to 84	134
85 and over	48
Less than 65	42

Conditions of Medicare patients treated by Dr. Peter William Simpson, MD, MPH in 2015

Hypertension	46
High Cholesterol	50
Stroke	4
Ischemic Heart Disease	16
Depression	20
Chronic Kidney Disease	15
Asthma	7
Osteoperosis	4
Atrial Fibrilation	4
Heart Failure	9
Chronic Obstructive Pulmonary Disease	4
Diabetes	23
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Peter William Simpson, MD, MPH treated as a gastroenterologist in Mountain View, CA during 2016 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Peter William Simpson, MD, MPH for Medicare patients.

diagnostic procedures	176
doctor visit	179
gastrointestinal procedures	270
hospital care	45
injections	44
inpatient care	45
minimally invasive procedures	270
preventive care	50
removal of lesion (e.g. growth)	176

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter William Simpson, MD, MPH.

**Gender**
Male	135
Female	159

**Ethnicity**
Non-Hispanic White	194
Black	0
Hispanic	25
Asian	53
Other	0
Native American	0

**Age**
From 65 to 74	170
From 75 to 84	84
85 and over	21
Less than 65	19

Conditions of Medicare patients treated by Dr. Peter William Simpson, MD, MPH in 2016

Hypertension	47
High Cholesterol	41
Stroke	0
Ischemic Heart Disease	19
Depression	23
Chronic Kidney Disease	20
Asthma	9
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	8
Chronic Obstructive Pulmonary Disease	7
Diabetes	21
Dementia	5
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Peter William Simpson, MD, MPH treated as a gastroenterologist in Mountain View, CA during 2017 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Peter William Simpson, MD, MPH for Medicare patients.

diagnostic procedures	148
doctor visit	151
gastrointestinal procedures	246
hospital care	36
injections	37
inpatient care	36
minimally invasive procedures	246
preventive care	61
removal of lesion (e.g. growth)	148

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter William Simpson, MD, MPH.

**Gender**
Male	151
Female	154

**Ethnicity**
Non-Hispanic White	216
Black	0
Hispanic	0
Asian	45
Other	22
Native American	0

**Age**
From 65 to 74	175
From 75 to 84	89
85 and over	25
Less than 65	16

Conditions of Medicare patients treated by Dr. Peter William Simpson, MD, MPH in 2017

Hypertension	50
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	18
Depression	18
Chronic Kidney Disease	24
Asthma	7
Osteoperosis	11
Atrial Fibrilation	9
Heart Failure	6
Chronic Obstructive Pulmonary Disease	8
Diabetes	24
Dementia	5
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Peter William Simpson, MD, MPH treated as a gastroenterologist in Mountain View, CA during 2018 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Peter William Simpson, MD, MPH for Medicare patients.

diagnostic procedures	173
doctor visit	215
gastrointestinal procedures	256
injections	38
minimally invasive procedures	256
preventive care	45
removal of lesion (e.g. growth)	173

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter William Simpson, MD, MPH.

**Gender**
Male	156
Female	183

**Ethnicity**
Non-Hispanic White	234
Black	0
Hispanic	23
Asian	56
Other	0
Native American	0

**Age**
From 65 to 74	181
From 75 to 84	111
85 and over	22
Less than 65	25

Conditions of Medicare patients treated by Dr. Peter William Simpson, MD, MPH in 2018

Hypertension	45
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	21
Depression	21
Chronic Kidney Disease	19
Asthma	6
Osteoperosis	7
Atrial Fibrilation	11
Heart Failure	11
Chronic Obstructive Pulmonary Disease	4
Diabetes	20
Dementia	6
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Peter William Simpson, MD, MPH treated as a gastroenterologist in Mountain View, CA during 2019 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Peter William Simpson, MD, MPH for Medicare patients.

diagnostic procedures	181
doctor visit	178
gastrointestinal procedures	243
injections	41
minimally invasive procedures	243
preventive care	21
removal of lesion (e.g. growth)	181

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter William Simpson, MD, MPH.

**Gender**
Male	146
Female	135

**Ethnicity**
Non-Hispanic White	191
Black	0
Hispanic	23
Asian	45
Other	0
Native American	0

**Age**
From 65 to 74	150
From 75 to 84	100
85 and over	19
Less than 65	12

Conditions of Medicare patients treated by Dr. Peter William Simpson, MD, MPH in 2019

Hypertension	54
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	22
Depression	25
Chronic Kidney Disease	23
Asthma	10
Osteoperosis	6
Atrial Fibrilation	10
Heart Failure	8
Chronic Obstructive Pulmonary Disease	6
Diabetes	20
Dementia	5
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Peter William Simpson, MD, MPH treated as a gastroenterologist in Mountain View, CA during 2020 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Peter William Simpson, MD, MPH for Medicare patients.

diagnostic procedures	149
doctor visit	135
gastrointestinal procedures	220
hospital care	13
injections	35
inpatient care	13
minimally invasive procedures	220
preventive care	36
removal of lesion (e.g. growth)	149

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter William Simpson, MD, MPH.

**Gender**
Male	132
Female	131

**Ethnicity**
Non-Hispanic White	184
Black	0
Hispanic	21
Asian	36
Other	0
Native American	0

**Age**
From 65 to 74	145
From 75 to 84	86
85 and over	21
Less than 65	11

Conditions of Medicare patients treated by Dr. Peter William Simpson, MD, MPH in 2020

Hypertension	45
High Cholesterol	44
Stroke	0
Ischemic Heart Disease	22
Depression	17
Chronic Kidney Disease	26
Asthma	5
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	9
Chronic Obstructive Pulmonary Disease	6
Diabetes	25
Dementia	5
Cancer	8

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Peter William Simpson, MD, MPH treated as a gastroenterologist in Mountain View, CA during 2021 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Peter William Simpson, MD, MPH for Medicare patients.

diagnostic procedures	203
doctor visit	206
gastrointestinal procedures	243
injections	18
minimally invasive procedures	254
preventive care	22
removal of lesion (e.g. growth)	203

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter William Simpson, MD, MPH.

**Gender**
Male	171
Female	162

**Ethnicity**
Non-Hispanic White	215
Black	0
Hispanic	0
Asian	51
Other	30
Native American	0

**Age**
From 65 to 74	175
From 75 to 84	114
85 and over	32
Less than 65	12

Conditions of Medicare patients treated by Dr. Peter William Simpson, MD, MPH in 2021

Hypertension	50
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	22
Depression	13
Chronic Kidney Disease	26
Asthma	5
Osteoperosis	9
Atrial Fibrilation	6
Heart Failure	10
Chronic Obstructive Pulmonary Disease	5
Diabetes	26
Dementia	4
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Peter William Simpson, MD, MPH treated as a gastroenterologist in Mountain View, CA during 2022 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Peter William Simpson, MD, MPH for Medicare patients.

diagnostic procedures	197
doctor visit	177
gastrointestinal procedures	242
injections	17
minimally invasive procedures	242
preventive care	28
removal of lesion (e.g. growth)	197

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Peter William Simpson, MD, MPH.

**Gender**
Male	165
Female	152

**Ethnicity**
Non-Hispanic White	222
Black	0
Hispanic	0
Asian	44
Other	27
Native American	0

**Age**
From 65 to 74	167
From 75 to 84	108
85 and over	29
Less than 65	13

Conditions of Medicare patients treated by Dr. Peter William Simpson, MD, MPH in 2022

Hypertension	55
High Cholesterol	69
Stroke	5
Ischemic Heart Disease	13
Depression	12
Chronic Kidney Disease	16
Asthma	8
Osteoperosis	17
Atrial Fibrilation	15
Heart Failure	6
Chronic Obstructive Pulmonary Disease	4
Diabetes	22
Dementia	0
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Peter William Simpson, MD, MPH for Medicare patients.

The highest averages for the top procedures that Dr. Peter William Simpson, MD, MPH treated as a gastroenterologist in Mountain View, CA were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

diagnostic procedures	163
doctor visit	165
gastrointestinal procedures	226
hospital care	26
injections	31
inpatient care	26
minimally invasive procedures	229
preventive care	30
removal of lesion (e.g. growth)	163

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Peter William Simpson, MD, MPH.

**Gender**
Male	141
Female	146

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	45
Non-Hispanic White	197
Native American / Alaskan Native	0
Hispanic	15
Other	7

**Age**
75 to 84	88
85 and over	23
Less than 65	17
65 to 74	158

Average of Total of Conditions of Medicare patients treated by Dr. Peter William Simpson, MD, MPH From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Peter William Simpson, MD, MPH treated were high cholesterol, hypertension, diabetes and chronic kidney disease.

Hypertension	44
High Cholesterol	44
Stroke	0
Ischemic Heart Disease	17
Depression	17
Chronic Kidney Disease	18
Asthma	5
Osteoporosis	7
Heart Failure	8
Chronic Obstructive Pulmonary Disease	4
Diabetes	20
Atrial Fibrillation	7
Cancer	10
Dementia	4

Education & Training

Dr. Peter William Simpson, MD, MPH graduated from University of California, Davis, School of Medicine. He completed residency at Santa Clara Valley Medical Center. He is certified by the Board Certification: Gastroenterology and has a state license in California.

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

Residency: Santa Clara Valley Medical Center

Board Certification: Board Certification: Gastroenterology

Licensed In: California

Affiliations & Hospitals

Dr. Peter William Simpson, MD, MPH is associated with these hospitals and organizations:

El Camino Health

Sutter Health

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. Peter William Simpson, MD, MPH appears to accept the following insurance providers: Blue Shield of California, Medicare Advantage, HealthSmart, MultiPlan, United Healthcare, TRICARE, Medicare, Cigna, Alliance PPO, Anthem Blue Cross of California, Private Healthcare Systems (PHCS), Accepted Valley Health Plan Plans: Classic Commercial HMO Plan only, Accepted Central California Alliance for Health Plans: TotalCare (HMO D-SNP), Accepted SCAN Plans: SCAN Compass (HMO), Accepted Santa Clara Family Health Plan Plans: DualConnect (HMO D-SNP), Accepted Provider Networks of America Plans: PPO, Accepted Sutter Health Plan Plans: Individual and Family Plan HMO: Large and Small Group HMO, Accepted Chinese Community Health Plan Plans: Active Choice- PPO Silver: Amber 50 HMO Silver: American Indian/Alaskan Native (Covered CA for Individual & Families): Bronze 60 HDHP HMO (including... and Accepted Aetna Plans: Aetna Choice POS II: Aetna Select EPO: Aetna Select Open Access: Aetna Signature Administrators (ASA): Aetna Student Health Program: Health Fund HMO (aka HMO/HRA): Health Fund....

Insurance Accepted by Provider includes:

According to our sources, Dr. Peter William Simpson, MD, MPH accepts the following insurance providers:

Blue Shield of California

Medicare Advantage

HealthSmart

MultiPlan

United Healthcare

TRICARE

Medicare

Cigna

Alliance PPO

Anthem Blue Cross of California

Private Healthcare Systems (PHCS)

Accepted Valley Health Plan Plans: Classic Commercial HMO Plan only

Accepted Central California Alliance for Health Plans: TotalCare (HMO D-SNP)

Accepted SCAN Plans: SCAN Compass (HMO)

Accepted Santa Clara Family Health Plan Plans: DualConnect (HMO D-SNP)

Accepted Provider Networks of America Plans: PPO

Accepted Sutter Health Plan Plans: Individual and Family Plan HMO: Large and Small Group HMO

Accepted Chinese Community Health Plan Plans: Active Choice- PPO Silver: Amber 50 HMO Silver: American Indian/Alaskan Native (Covered CA for Individual & Families): Bronze 60 HDHP HMO (including...

Accepted Aetna Plans: Aetna Choice POS II: Aetna Select EPO: Aetna Select Open Access: Aetna Signature Administrators (ASA): Aetna Student Health Program: Health Fund HMO (aka HMO/HRA): Health Fund...

Ratings & Reviews

Dr. Peter William Simpson, MD, MPH has an exceptional overall rating with an average of 4.85 out of 5 stars based on 144 ratings. We collect ratings and reviews of Dr. Peter William Simpson, MD, MPH from all over the web to help you find the right in Mountain View, CA.

4.85

Overall Rating

(144 Ratings)

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General Payments

These charts describe general payments received by Dr. Peter William Simpson, MD, MPH. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
AbbVie, Inc.	$710 Humira $484	Lupron $19	Creon $15	$192
Aries Pharmaceuticals, Inc.	$145 ELEVIEW $145
Celgene Corporation	$13 ZEPOSIA $13
Concordia Pharmaceuticals Inc.	$11 Donnatal $11

**Types of Payments**
Food and Beverage	$880

Biography

Dr. Peter Simpson practices adult gastroenterology. Areas of expertise for Dr. Simpson include colon cancer, celiac disease, and fabry disease. He is affiliated with El Camino Health, Brown and Toland Physicians, and Sutter Health. He obtained his medical school training at the University of California, Davis, School of Medicine and performed his residency at Santa Clara Valley Medical Center. His average patient rating is 5.0 stars (out of 5). He seems to honor several insurance carriers, including Anthem, Blue California, and HealthSmart. Dr. Simpson's practice in Mountain View, CA is open to new patients as reported by Brown and Toland Physicians.