NPPES file of Aug 9, 2026

Pamela Ann Sebastian, MBBS

Geriatric Medicine (Internal Medicine) Physician · San Jose, CA

Pamela Ann Sebastian, MBBS is a geriatric medicine (internal medicine) physician with a practice address in San Jose, California, and NPI 1922311505, issued on Jul 23, 2010. Check the license (California A155844, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1922311505
Name
Pamela Ann Sebastian
Credential
MBBS
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
License number
A155844 CA
Self-reported in NPPES; status is on the state search
Practice location
751 S Bascom Ave, San Jose, CA 95128
Phone
(408) 885-5000
Enumerated
Jul 23, 2010
Record last updated
Aug 28, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20181204000959); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest geriatric medicine (internal medicine) physician records → All 532 in California → Look up another NPI →

Also registered at 751 S Bascom Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Puya Abbassi, D.O.Neurology Physician1831695428
  2. Abolghasem Abdoli, MDNeonatal-Perinatal Medicine Physician1790757441
  3. Erik Abernethy, PAPhysician Assistant1649577354
  4. Christopher Abrinko, RESIDENT PHYSICIANStudent in an Organized Health Care Education/Training Program1649017328
  5. Cherine Abu-Eid, MDAnesthesiology Physician1033173307
  6. Pallavi AcharyaClinical Social Worker1154807873

Verify Pamela Ann Sebastian in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A155844    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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96% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024

184 Medicare Part D claims, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D.

  1. Pamela Ann Sebastian184
  2. Specialty average4,246

Most prescribed

  1. Jardiance20 claims
  2. Amlodipine Besylate12 claims
  3. Atorvastatin Calcium12 claims
  4. Divalproex 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.

Bills Medicare through one group practice

  1. County OF Santa ClaraSan Jose, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Pamela Ann Sebastian among 532 geriatric medicine (internal medicine) physician records in California

Pamela Ann Sebastian, MBBS 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 2010, is newer than 71% of them.

  • NPI issued2010 · 71% of these records are older, 26% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 51% of these records are
  • Graduated2008 · median 1999 among the 271 with a school on file
  • Record last updated2018 · 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 San Jose → Geriatric Medicine (Internal Medicine) Physician nationwide →

The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes

  1. Nirmala Gopalan, MDSan Jose, CA 951281073627014
  2. Thomas Kelsey, MDSan Jose, CA 951281528022530
  3. Gary Steinke, MDSan Jose, CA 951281629161161
  4. Haresh Ruparel, M.D.San Jose, CA 951291124071477
  5. Chien-Wai Chiu, MDSan Jose, CA 951311013544931
  6. Dushyant Patel, MDSan Jose, CA 951161073595278
  7. Robert Keet, M.D.Santa Cruz, CA 950651639272750
  8. Lawrence Rosenbaum, M.D.Santa Cruz, CA 950651467555474

Common questions

What is Pamela Ann Sebastian, MBBS's NPI number?

Pamela Ann Sebastian, MBBS's National Provider Identifier (NPI) is 1922311505, issued on Jul 23, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Pamela Ann Sebastian, MBBS located?

The NPPES record lists a practice address at 751 S Bascom Ave, San Jose, CA, 95128. Phone: (408) 885-5000. Providers update this record themselves, so call before visiting.

How can I verify Pamela Ann Sebastian, MBBS's license?

NPPES lists California license number A155844, 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 Pamela Ann Sebastian, MBBS prescribe under Medicare Part D?

In 2024, Pamela Ann Sebastian, MBBS had 184 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.