NPPES file of Aug 9, 2026

Robert A. Osterhoff, M.D.

Gastroenterology Physician · Burlingame, CA

Robert A. Osterhoff, M.D. is a gastroenterology physician with a practice address in Burlingame, California, and NPI 1801028907, issued on Aug 22, 2009. Check the license (California A106502, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1801028907
Name
Robert A. Osterhoff
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
A106502 CA
Self-reported in NPPES; status is on the state search
Practice location
1501 Trousdale Dr, Burlingame, CA 94010
Phone
(650) 652-8500
Enumerated
Aug 22, 2009
Record last updated
Jun 22, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20130613000494); accepts Medicare assignment
Medical or professional school
Tufts University School Of Medicine, 2007
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →

Also registered at 1501 Trousdale Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Paul Abeyta, MDSports Medicine (Orthopaedic Surgery) Physician1225126147
  2. Edward Abratowski, M.D.Hospitalist Physician1649232760
  3. Shital Aggarwal, M.D.Hospitalist Physician1912926676
  4. Amy Akers, M.D.Neurology Physician1699792655
  5. Shamsuddin Alamgir, M.DInternal Medicine Physician1306877071
  6. Harsha Alexander, M.D.Hospitalist Physician1780974303

Verify Robert A. Osterhoff in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A106502    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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16% more Medicare Part D claims than the average gastroenterology physician in 2024

944 Medicare Part D claims for 445 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.

  1. Robert Osterhoff944
  2. Specialty average811

Most prescribed

  1. Sod Sulf-Potass Sulf-Mag Sulf240 claims
  2. Omeprazole115 claims
  3. Pantoprazole Sodium99 claims
  4. Dicyclomine Hcl53 claims
  5. Esomeprazole Magnesium31 claims
  6. Linzess29 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: $1,250.23

44 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.

  1. Robert Osterhoff$1,250.23
  2. Specialty average$5,015.95

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

  1. Sutter Bay Medical FoundationBurlingame, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Robert A. Osterhoff among 2,140 gastroenterology physician records in California

Robert A. Osterhoff, M.D. 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 2009, is newer than 69% of them.

  • NPI issued2009 · 69% of these records are older, 28% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated2007 · median 2002 among the 1,538 with a school on file
  • Record last updated2020 · 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 Burlingame → Gastroenterology Physician nationwide →

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Michael Bender, M.D.Burlingame, CA 940101942391586
  2. Rani BerryBurlingame, CA 940101821521774
  3. Tressia Hing, M.D.Burlingame, CA 940101427337815
  4. Prachi Nene, M.D.Burlingame, CA 940101124481619
  5. Michael Northcutt, M.D.Burlingame, CA 940101700204443
  6. Ernest Ribera, MDBurlingame, CA 940101285644286
  7. Kenneth Roost, MDBurlingame, CA 940101801850508
  8. Anne Thai, M.D.Burlingame, CA 940101831366798

Common questions

What is Robert A. Osterhoff, M.D.'s NPI number?

Robert A. Osterhoff, M.D.'s National Provider Identifier (NPI) is 1801028907, issued on Aug 22, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Robert A. Osterhoff, M.D. located?

The NPPES record lists a practice address at 1501 Trousdale Dr, Burlingame, CA, 94010. Phone: (650) 652-8500. Providers update this record themselves, so call before visiting.

How can I verify Robert A. Osterhoff, M.D.'s license?

NPPES lists California license number A106502, 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 Robert A. Osterhoff, M.D. prescribe under Medicare Part D?

In 2024, Robert A. Osterhoff, M.D. had 944 Medicare Part D claims for 445 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.