Tamina Isolani-Nagarvala, D.O.
Internal Medicine Physician · Oakland, CA
Tamina Isolani-Nagarvala, D.O. is an internal medicine physician with a practice address in Oakland, California, and NPI 1093045288, issued on Jan 11, 2010. Check the license (California 20A10719, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tamina Isolani-Nagarvala
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A10719 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1411 E 31St St, Oakland, CA 94602
- Phone
- (510) 437-4800
- Enumerated
- Jan 11, 2010
- Record last updated
- Jan 11, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150728006112); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1411 E 31St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tamina Isolani-Nagarvala in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A10719Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
184 Medicare Part D claims for 67 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Atorvastatin Calcium19 claims
- Amlodipine Besylate15 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
- Alameda Inpatient Medical IncAlameda, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tamina Isolani-Nagarvala among 17,696 internal medicine physician records in California
Tamina Isolani-Nagarvala, D.O. 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 2010, is newer than 63% of them.
- NPI issued2010 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2007 · median 2004 among the 11,065 with a school on file
- Record last updated2010 · 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).
432 internal medicine physician records list a practice address in Oakland
They are 432 of the 18,558 NPPES records with a practice address in Oakland, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Oakland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lyn Berry, MDOakland, CA 946021528078193
- Helen Driscoll, MDOakland, CA 946021720168230
- Julia Follette, M.D.Oakland, CA 946021730364480
- Sheira Freedman, MDOakland, CA 946021700896396
- Elaina Guerin, D.O.Oakland, CA 946021720286446
- Kathleen Hicks, M.D.Oakland, CA 946021902850209
- Francisco Isolani, M.D.Oakland, CA 946021326185265
- Annemarie Mallick, D.O.Oakland, CA 946021588633507
Common questions
What is Tamina Isolani-Nagarvala, D.O.'s NPI number?
Tamina Isolani-Nagarvala, D.O.'s National Provider Identifier (NPI) is 1093045288, issued on Jan 11, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Tamina Isolani-Nagarvala, D.O. located?
The NPPES record lists a practice address at 1411 E 31St St, Oakland, CA, 94602. Phone: (510) 437-4800. Providers update this record themselves, so call before visiting.
How can I verify Tamina Isolani-Nagarvala, D.O.'s license?
NPPES lists California license number 20A10719, 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 Tamina Isolani-Nagarvala, D.O. prescribe under Medicare Part D?
In 2024, Tamina Isolani-Nagarvala, D.O. had 184 Medicare Part D claims for 67 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.