John David Culbertson, M.D.
Internal Medicine Physician · San Anselmo, CA
John David Culbertson, M.D. is an internal medicine physician with a practice address in San Anselmo, California, and NPI 1649219833, issued on Jun 5, 2006. Check the license (California A99250, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John David Culbertson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A99250 CA
23216 AL
26725 SC
Self-reported in NPPES; status is on the state search - Practice location
- 895 Sir Francis Drake Blvd, San Anselmo, CA 94960
- Phone
- (415) 925-3617
- Enumerated
- Jun 5, 2006
- Record last updated
- Jan 22, 2025
- Fax
- (415) 925-3597
- Medicaid ID
- 267259 SC
- Medicare enrollment
- Enrolled (PECOS I20070629000200); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 1998
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 895 Sir Francis Drake Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marian Cremin, LCSWClinical Social Worker1699825091
- David Ogden, M.D.Internal Medicine Physician1003887324
- Alicia Smart, PSYDClinical Psychologist1548386436
Verify John David Culbertson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A99250Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average internal medicine physician in 2024
7,242 Medicare Part D claims for 766 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 210 claims were for opioids.
Most prescribed
- Atorvastatin Calcium704 claims
- Losartan Potassium541 claims
- Levothyroxine Sodium313 claims
- Lisinopril311 claims
- Amlodipine Besylate300 claims
- Tamsulosin Hcl223 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.
John David Culbertson among 17,696 internal medicine physician records in California
John David Culbertson, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1998 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 internal medicine physician records list a practice address in San Anselmo
They are 4 of the 250 NPPES records with a practice address in San Anselmo, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Anselmo → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Estelle Baer, M.D.San Anselmo, CA 949601679837793
- Juhi Goswamy, M.D., M.P.H.San Anselmo, CA 949601821448317
- David Ogden, M.D.San Anselmo, CA 949601003887324
- Clarene David, M.D.San Quentin, CA 949641093917155
- Renee Kanan, MDSan Quentin, CA 949641255520565
- Haiyan Ramirez Batlle, M.D.San Quentin, CA 949641851740708
- Michael Rowe, M.D.San Quentin, CA 949641235158551
- Michael Chase, MDSausalito, CA 949651457423105
Common questions
What is John David Culbertson, M.D.'s NPI number?
John David Culbertson, M.D.'s National Provider Identifier (NPI) is 1649219833, issued on Jun 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John David Culbertson, M.D. located?
The NPPES record lists a practice address at 895 Sir Francis Drake Blvd, San Anselmo, CA, 94960. Phone: (415) 925-3617. Providers update this record themselves, so call before visiting.
How can I verify John David Culbertson, M.D.'s license?
NPPES lists California license number A99250, 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 John David Culbertson, M.D. prescribe under Medicare Part D?
In 2024, John David Culbertson, M.D. had 7,242 Medicare Part D claims for 766 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.