Robert H. Dunham, M.D.
Surgery Physician · Napa, CA
Robert H. Dunham, M.D. is a surgery physician with a practice address in Napa, California, and NPI 1700851870, issued on Feb 21, 2006. Check the license (California G74484, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert H. Dunham
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- G74484 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3434 Villa LN, Napa, CA 94558
- Phone
- (707) 224-7757
- Enumerated
- Feb 21, 2006
- Record last updated
- Oct 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (707) 224-5870
- Medicare enrollment
- Enrolled (PECOS I20031230000387); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1990
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 3434 Villa LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert H. Dunham in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G74484Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% more Medicare Part D claims than the average surgery physician in 2024
158 Medicare Part D claims for 111 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims. 51 claims were for opioids.
Most prescribed
- Tramadol Hcl49 claims
- Sod Sulf-Potass Sulf-Mag Sulf34 claims
- Pantoprazole Sodium12 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.
Bills Medicare through one group practice
- Providence Medical FoundationNapa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert H. Dunham among 3,118 surgery physician records in California
Robert H. Dunham, M.D. is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1990 · median 2003 among the 1,901 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Napa → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Elizabeth Cunningham, MDNapa, CA 945581891763553
- Leland Raymond, MDNapa, CA 945581699805598
- Matthew Shepherd, M.D.Napa, CA 945581568470425
- Wendell Wenneker, MDNapa, CA 945581669480232
- Robert White, MDNapa, CA 945581245435791
- Michael Bloomstein, MDMartinez, CA 945531538247614
- Eve CominosMartinez, CA 945531083784136
- Stuart FormanMartinez, CA 945531730250309
Common questions
What is Robert H. Dunham, M.D.'s NPI number?
Robert H. Dunham, M.D.'s National Provider Identifier (NPI) is 1700851870, issued on Feb 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert H. Dunham, M.D. located?
The NPPES record lists a practice address at 3434 Villa LN, Napa, CA, 94558. Phone: (707) 224-7757. Providers update this record themselves, so call before visiting.
How can I verify Robert H. Dunham, M.D.'s license?
NPPES lists California license number G74484, 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 H. Dunham, M.D. prescribe under Medicare Part D?
In 2024, Robert H. Dunham, M.D. had 158 Medicare Part D claims for 111 beneficiaries; the average among surgery physician prescribers was 147. 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.