James Mittelberger, M.D.
Geriatric Medicine (Internal Medicine) Physician · Oakland, CA
James Mittelberger, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Oakland, California, and NPI 1508876194, issued on Aug 8, 2006. Check the license (California G58513, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Mittelberger
- Credential
- M.D.
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- G58513 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6155 Girvin Dr, Oakland, CA 94611
- Phone
- (510) 387-0585
- Enumerated
- Aug 8, 2006
- Record last updated
- Nov 10, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (510) 291-2970
- Medicaid ID
- 00G585130 CA
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 532 in California → Look up another NPI →
Verify James Mittelberger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G58513Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
160 Medicare Part D claims for 26 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D.
Most prescribed
- Nifedipine Er23 claims
- Pantoprazole Sodium16 claims
- Furosemide13 claims
- Loxapine13 claims
- Pravastatin Sodium13 claims
- Levothyroxine Sodium11 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.
James Mittelberger among 532 geriatric medicine (internal medicine) physician records in California
James Mittelberger, M.D. is one of 532 geriatric medicine (internal medicine) physician records with a practice address in California. 77% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 46% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 51% of these records are
- Record last updated2010 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in California
There are 532 geriatric medicine (internal medicine) physician records in California.
All 532 in California → Every provider in Oakland → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Mala KrishnamoorthyOakland, CA 946111194145920
- Samira Molaei, MDOakland, CA 946111053701466
- Julie Sandoval-Perry, MDOakland, CA 946111225180029
- Anuradha Shankar, MDOakland, CA 946111205914082
- Ali Torbati, MDOakland, CA 946111124384110
- Susan Wakerlin, MDOakland, CA 946111164594982
- Catherine Buchanan, M.D.Oakland, CA 946101114903341
- Fiona Wilmot, M.D.Oakland, CA 946121659722619
Common questions
What is James Mittelberger, M.D.'s NPI number?
James Mittelberger, M.D.'s National Provider Identifier (NPI) is 1508876194, issued on Aug 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Mittelberger, M.D. located?
The NPPES record lists a practice address at 6155 Girvin Dr, Oakland, CA, 94611. Phone: (510) 387-0585. Providers update this record themselves, so call before visiting.
How can I verify James Mittelberger, M.D.'s license?
NPPES lists California license number G58513, 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 James Mittelberger, M.D. prescribe under Medicare Part D?
In 2024, James Mittelberger, M.D. had 160 Medicare Part D claims for 26 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.