Vivian Tien, MD
NPI 1588058184 · Infectious Disease Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vivian Tien, MD is a Infectious Disease Physician provider in Stanford, CA (NPI 1588058184).
Provider details
- NPI number
- 1588058184
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A145002 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 50 | 48 |
| Rifampin | 28 | — |
| Atovaquone/Proguanil Hclbrand: Atovaquone-Proguanil Hcl | 22 | 20 |
| Isoniazid | 21 | — |
| Diph,pertuss(acell),tet Vac/Pfbrand: Adacel Tdap | 20 | 20 |
| Typhoid Vi Polysacch Vaccinebrand: Typhim Vi | 19 | 19 |
| Doxycycline Monohydrate | 15 | — |
Practice location
Mailing address
Additional practice locations (1)
- 4150 V St # 1110Sacramento, CA 95817-1460Phone: (916) 734-2737
Registry dates
- Enumerated
- 2015-03-23
- Last updated
- 2022-02-11
- Certified
- 2021-02-01
Frequently asked questions
- What is Vivian Tien's NPI number?
- Vivian Tien's National Provider Identifier (NPI) is 1588058184, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vivian Tien's specialty?
- Vivian Tien is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Vivian Tien located?
- Vivian Tien's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305.
- What is Vivian Tien's phone number?
- The practice phone number listed in the NPPES registry for Vivian Tien is (650) 498-3333.
- Does Vivian Tien accept Medicare?
- Vivian Tien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vivian Tien's NPI active?
- Yes — Vivian Tien's NPI (1588058184) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.