NPPES file of Aug 9, 2026

Vivian Diep

Physician Assistant · San Jose, CA

Vivian Diep is a physician assistant with a practice address in San Jose, California, and NPI 1487167912, issued on Nov 6, 2017. Check the license with the California board that licenses this profession; 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
1487167912
Name
Vivian Diep
Primary taxonomy
Physician Assistant 363A00000X
Practice location
2690 S White RD Ste 50, San Jose, CA 95148
Phone
(408) 223-7000
Enumerated
Nov 6, 2017
Record last updated
Jan 15, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(408) 223-7001
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2690 S White RD Ste 50

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

  1. Joselito Cabaccan, MDEndocrinology, Diabetes & Metabolism Physician1801813720
  2. Thomas Fandel, M.D.Endocrinology, Diabetes & Metabolism Physician1952833931
  3. Thu Ho, M.D.Pediatric Endocrinology Physician1245437433
  4. Anjali Jain, M.D.Pediatric Endocrinology Physician1174707392
  5. Lily Kao, MDRheumatology Physician1578742888
  6. Alex Pham, PA-CPhysician Assistant1043813132

Verify Vivian Diep in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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
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69% fewer Medicare Part D claims than the average physician assistant in 2024

259 Medicare Part D claims for 38 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 13 claims were for opioids.

  1. Vivian Diep259
  2. Specialty average830

Most prescribed

  1. Sulfamethoxazole-Trimethoprim37 claims
  2. Rosuvastatin Calcium30 claims
  3. Pantoprazole Sodium29 claims
  4. Valganciclovir Hcl26 claims
  5. Ondansetron Odt12 claims
  6. Oxycodone Hcl12 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.

Vivian Diep among 14,451 physician assistant records in California

Vivian Diep is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 47% of them.

  • NPI issued2017 · 47% of these records are older, 48% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 50% of these records are
  • Record last updated2020 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

221 physician assistant records list a practice address in San Jose

They are 221 of the 20,925 NPPES records with a practice address in San Jose, and 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Randy Bain, PA-C, MPHCSan Jose, CA 951481841774486
  2. Alex Pham, PA-CSan Jose, CA 951481043813132
  3. Sheri Rocha, PA-CSan Jose, CA 951481427409192
  4. McShirley Tran, PASan Jose, CA 951481184108490
  5. Aiman Waris, PA-CSan Jose, CA 951481225626609
  6. Amy Elizaga, PA-CSan Jose, CA 951381144093949
  7. Seung HanSan Jose, CA 951381043701170
  8. Cherryl Matias, PA-CSan Jose, CA 951381154851582

Common questions

What is Vivian Diep's NPI number?

Vivian Diep's National Provider Identifier (NPI) is 1487167912, issued on Nov 6, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Vivian Diep located?

The NPPES record lists a practice address at 2690 S White RD Ste 50, San Jose, CA, 95148. Phone: (408) 223-7000. Providers update this record themselves, so call before visiting.

How can I verify Vivian Diep's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Vivian Diep prescribe under Medicare Part D?

In 2024, Vivian Diep had 259 Medicare Part D claims for 38 beneficiaries; the average among physician assistant prescribers was 830. 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.