Paul Shiu
NPI 1508495433 · Rheumatology Physician · San Mateo, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Paul Shiu is a Rheumatology Physician provider in San Mateo, CA (NPI 1508495433).
Provider details
- NPI number
- 1508495433
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 21306 (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
6 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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 52 | 17 |
| Prednisone | 42 | 17 |
| Hydroxychloroquine Sulfate | 33 | 13 |
| Allopurinol | 33 | — |
| Leflunomide | 23 | — |
| Mycophenolate Mofetil | 21 | — |
| Gabapentin | 12 | — |
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
- 2020-04-03
- Last updated
- 2025-05-06
- Certified
- 2025-05-06
Frequently asked questions
- What is Paul Shiu's NPI number?
- Paul Shiu's National Provider Identifier (NPI) is 1508495433, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Paul Shiu's specialty?
- Paul Shiu is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Paul Shiu located?
- Paul Shiu's practice location on file with NPPES is 101 S San Mateo Dr Ste 307, San Mateo, CA 94401-3844.
- What is Paul Shiu's phone number?
- The practice phone number listed in the NPPES registry for Paul Shiu is (650) 348-6011.
- Does Paul Shiu accept Medicare?
- Paul Shiu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Paul Shiu's NPI active?
- Yes — Paul Shiu's NPI (1508495433) is active in the NPPES registry as of the last update on 2025-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.