Eunice Tsai, M.D.
NPI 1609070051 · Dermatology Physician · Union City, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eunice Tsai, M.D. is a Dermatology Physician provider in Union City, CA (NPI 1609070051).
Provider details
- NPI number
- 1609070051
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A76239 (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
19 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 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 113 | 58 |
| Fluocinonide | 99 | 51 |
| Hydrocortisone | 85 | 53 |
| Acitretin | 70 | 16 |
| Hydroxyzine Hcl | 69 | 19 |
| Ketoconazole | 54 | 21 |
| Fluorouracil | 53 | 46 |
| Betamethasone Valerate | 52 | 19 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-06-12
- Last updated
- 2022-02-11
Frequently asked questions
- What is Eunice Tsai's NPI number?
- Eunice Tsai's National Provider Identifier (NPI) is 1609070051, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eunice Tsai's specialty?
- Eunice Tsai is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Eunice Tsai located?
- Eunice Tsai's practice location on file with NPPES is 3553 Whipple Rd, Union City, CA 94587-1507.
- What is Eunice Tsai's phone number?
- The practice phone number listed in the NPPES registry for Eunice Tsai is (510) 454-1000.
- Does Eunice Tsai accept Medicare?
- Eunice Tsai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eunice Tsai's NPI active?
- Yes — Eunice Tsai's NPI (1609070051) 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.