Vivian Tang, PHARM.D.
NPI 1649637943 · Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist · Fountain Valley, CA
Vivian Tang, PHARM.D. is a Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist provider in Fountain Valley, CA (NPI 1649637943).
Provider details
- NPI number
- 1649637943
- Entity type
- Individual
- Primary specialty
- Pharmacist Clinician (PhC)/ Clinical Pharmacy SpecialistPharmacy Service Providers
- Credential
- PHARM.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 73357 (CA)
Specialties & taxonomies
Pharmacy Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Semaglutidebrand: Ozempic | 89 | 17 |
| Tirzepatidebrand: Mounjaro | 47 | — |
| Metformin Hcl | 45 | 20 |
| Metformin Hclbrand: Metformin Hcl Er | 39 | 17 |
| Glipizide | 38 | 15 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 33 | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-01-19
- Last updated
- 2023-09-14
- Certified
- 2023-09-14
Frequently asked questions
- What is Vivian Tang's NPI number?
- Vivian Tang's National Provider Identifier (NPI) is 1649637943, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vivian Tang's specialty?
- Vivian Tang is listed in the NPPES registry with a primary specialty of Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist (Pharmacy Service Providers).
- Where is Vivian Tang located?
- Vivian Tang's practice location on file with NPPES is 17360 Brookhurst St, Fountain Valley, CA 92708-3720.
- What is Vivian Tang's phone number?
- The practice phone number listed in the NPPES registry for Vivian Tang is (714) 713-4290.
- Is Vivian Tang's NPI active?
- Yes — Vivian Tang's NPI (1649637943) is active in the NPPES registry as of the last update on 2023-09-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.