Peter William Simpson, MD, MPH
Gastroenterology Physician · Mountain View, CA
Peter William Simpson, MD, MPH is a gastroenterology physician with a practice address in Mountain View, California, and NPI 1043499478, issued on Nov 2, 2007. Check the license (California A71224, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Peter William Simpson
- Credential
- MD, MPH
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A71224 CA
Self-reported in NPPES; status is on the state search - Practice location
- 701 E EL Camino Real, Mountain View, CA 94040
- Phone
- (650) 934-7575
- Enumerated
- Nov 2, 2007
- Record last updated
- Jan 13, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080109000408); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 701 E EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Peter William Simpson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A71224Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average gastroenterology physician in 2024
463 Medicare Part D claims for 269 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf81 claims
- Peg 3350-Electrolyte54 claims
- Pantoprazole Sodium52 claims
- Gavilyte-G47 claims
- Omeprazole45 claims
- Gavilyte-C18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $11.82
1 payment: food and beverage; the largest payer was Micro-tech Endoscopy USA, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationMountain View, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter William Simpson among 2,140 gastroenterology physician records in California
Peter William Simpson, MD, MPH is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 52% of them.
- NPI issued2007 · 52% of these records are older, 37% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2000 · median 2002 among the 1,538 with a school on file
- Record last updated2012 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Mountain View → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Robert Bronstone, M.D.Mountain View, CA 940401568519254
- Abhishek Choudhary, MDMountain View, CA 940401730276122
- Howard Herzenberg, M.D.Mountain View, CA 940401376584342
- Edward Huang, MD, MPHMountain View, CA 940401275682650
- Radhika Kumari, MDMountain View, CA 940401275738445
- Jay LadenheimMountain View, CA 940401932117447
- Jiayi Li, M.D.Mountain View, CA 940401902814346
- Andrew Lipton, MDMountain View, CA 940401174594394
Common questions
What is Peter William Simpson, MD, MPH's NPI number?
Peter William Simpson, MD, MPH's National Provider Identifier (NPI) is 1043499478, issued on Nov 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Peter William Simpson, MD, MPH located?
The NPPES record lists a practice address at 701 E EL Camino Real, Mountain View, CA, 94040. Phone: (650) 934-7575. Providers update this record themselves, so call before visiting.
How can I verify Peter William Simpson, MD, MPH's license?
NPPES lists California license number A71224, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Peter William Simpson, MD, MPH prescribe under Medicare Part D?
In 2024, Peter William Simpson, MD, MPH had 463 Medicare Part D claims for 269 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.