NPPES file of Aug 9, 2026

Tiffany Wing-Yiu Diep, NP

Family Nurse Practitioner · Pomona, CA

Tiffany Wing-Yiu Diep, NP is a family nurse practitioner with a practice address in Pomona, California, and NPI 1669944534, issued on Dec 17, 2018. Check the license (California 95010475, as entered in NPPES) 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1669944534
Name
Tiffany Wing-Yiu Diep
Credential
NP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License numbers
95010475 CA
95073170 CA
Self-reported in NPPES; status is on the state search
Practice location
350 Vinton Ave Ste 101, Pomona, CA 91767
Phone
(096) 205-5029
Enumerated
Dec 17, 2018
Record last updated
Sep 11, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20201001001831); 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 family nurse practitioner records → All 16,966 in California → Look up another NPI →

Also registered at 350 Vinton Ave Ste 101

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

  1. Vandana Agarwal, MDHematology & Oncology Physician1134124548
  2. Susan Bauerle, FNPFamily Nurse Practitioner1518015155
  3. Katrina Britton, NURSE PRACTITIONERPrimary Care Nurse Practitioner1649646803
  4. David Sapien, M.D.Internal Medicine Physician1922234889

Verify Tiffany Wing-Yiu Diep in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 95010475    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
Find 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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Bills Medicare through one group practice

  1. Huntington Specialist And Nursing CorporationRosemead, CA

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

Tiffany Wing-Yiu Diep among 16,966 family nurse practitioner records in California

Tiffany Wing-Yiu Diep, NP is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 45% of them.

  • NPI issued2018 · 45% of these records are older, 50% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 40% of these records are
  • Graduated2018 · median 2019 among the 6,793 with a school on file
  • Record last updated2019 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

71 family nurse practitioner records list a practice address in Pomona

They are 71 of the 5,102 NPPES records with a practice address in Pomona, and 16,966 family nurse practitioner records in California.

All 16,966 in California → Every provider in Pomona → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. James Barr, FNPPomona, CA 917671801290481
  2. Susan Bauerle, FNPPomona, CA 917671518015155
  3. Ernest Bentum, NPPomona, CA 917671811324320
  4. Daisy BerganioPomona, CA 917671790175446
  5. Marianne Carlota, FNPPomona, CA 917671194185413
  6. Steven Do, FNP-CPomona, CA 917671285005249
  7. Dinh LaiPomona, CA 917671093123176
  8. Darlene McPherson-Ventura, FNPPomona, CA 917671235130048

Common questions

What is Tiffany Wing-Yiu Diep, NP's NPI number?

Tiffany Wing-Yiu Diep, NP's National Provider Identifier (NPI) is 1669944534, issued on Dec 17, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Tiffany Wing-Yiu Diep, NP located?

The NPPES record lists a practice address at 350 Vinton Ave Ste 101, Pomona, CA, 91767. Phone: (096) 205-5029. Providers update this record themselves, so call before visiting.

How can I verify Tiffany Wing-Yiu Diep, NP's license?

NPPES lists California license number 95010475, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.