Theresa M. Berta, MD
Geriatric Medicine (Internal Medicine) Physician · Greenbrae, CA
Theresa M. Berta, MD is a geriatric medicine (internal medicine) physician with a practice address in Greenbrae, California, and NPI 1316087612, issued on Feb 7, 2007. Check the license (California A48830, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Theresa M. Berta
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- A48830 CA
Self-reported in NPPES; status is on the state search - Practice location
- 501 Via Casitas, Greenbrae, CA 94904
- Phone
- (415) 464-1771
- Enumerated
- Feb 7, 2007
- Record last updated
- Feb 26, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (415) 464-1158
- Medicaid ID
- 00A488300 CA
- Entity
- Type 1 · individual
Also registered at 501 Via Casitas
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Samantha Fargeon, LCSWClinical Social Worker1770791931
- Mark Kubik, MDGeriatric Medicine (Internal Medicine) Physician1174746325
- Joshua ManioOccupational Therapist1538932926
- Brooke Merino, DPTPhysical Therapist1003455759
- John Toups, OTROccupational Therapist1962248856
Verify Theresa M. Berta in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A48830Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
12 Medicare Part D claims, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D.
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.
Geriatric Medicine (Internal Medicine) Physician providers in California
There are 532 geriatric medicine (internal medicine) physician records in California.
Other geriatric medicine (internal medicine) physician records in California
- Adil Abbasi, M.D.La Jolla, CA1548261316
- Shashidar Acharya, M.D.Orange, CA1770685521
- Marie AdachiLos Angeles, CA1629496740
- Pouya Afshar, M.D.San Diego, CA1184958977
- Parag Agnihotri, M.D.San Diego, CA1447351085
- Andreas Ahlas, M.D.Bakersfield, CA1326200833
- Waseem Ahmed, MDSanta Rosa, CA1386803559
- Paul AisenSan Diego, CA1669470753
- Mahmuda Alam, M.D.Glendale, CA1568659985
- Cathy Alessi, M.D.North Hills, CA1134224983
Common questions
What is Theresa M. Berta, MD's NPI number?
Theresa M. Berta, MD's National Provider Identifier (NPI) is 1316087612, issued on Feb 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Theresa M. Berta, MD located?
The NPPES record lists a practice address at 501 Via Casitas, Greenbrae, CA, 94904. Phone: (415) 464-1771. Providers update this record themselves, so call before visiting.
How can I verify Theresa M. Berta, MD's license?
NPPES lists California license number A48830, 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 Theresa M. Berta, MD prescribe under Medicare Part D?
In 2024, Theresa M. Berta, MD had 12 Medicare Part D claims; 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.