Pauline Tsai, MD
NPI 1336216357 · Allergy Physician · Fontana, CA
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Pauline Tsai, MD is a Allergy Physician provider in Fontana, CA (NPI 1336216357).
Provider details
- NPI number
- 1336216357
- Entity type
- Individual
- Primary specialty
- Allergy PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G80447 (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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Montelukast Sodium | 47 | 26 |
| Azelastine Hcl | 35 | 22 |
| Fluticasone Propion/Salmeterolbrand: Wixela Inhub | 22 | 14 |
| Budesonide/Formoterol Fumaratebrand: Breyna | 17 | — |
| Tiotropium Bromidebrand: Spiriva Respimat | 14 | — |
| Mometasone/Formoterolbrand: Dulera | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-29
- Last updated
- 2021-11-29
Frequently asked questions
- What is Pauline Tsai's NPI number?
- Pauline Tsai's National Provider Identifier (NPI) is 1336216357, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Pauline Tsai's specialty?
- Pauline Tsai is listed in the NPPES registry with a primary specialty of Allergy Physician (Allopathic & Osteopathic Physicians).
- Where is Pauline Tsai located?
- Pauline Tsai's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is Pauline Tsai's phone number?
- The practice phone number listed in the NPPES registry for Pauline Tsai is (909) 427-3910.
- Does Pauline Tsai accept Medicare?
- Pauline Tsai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Pauline Tsai's NPI active?
- Yes — Pauline Tsai's NPI (1336216357) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.