Chih-Hsin Hsu, M.D.
NPI 1629480389 · Allergy & Immunology Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chih-Hsin Hsu, M.D. is a Allergy & Immunology Physician provider in Oakland, CA (NPI 1629480389).
Provider details
- NPI number
- 1629480389
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- R3683 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Azelastine Hcl | 14 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude 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 no Part D record, 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
Additional practice locations (1)
- 120 E Harris AveSan Angelo, TX 76903-5904Phone: (325) 653-6741
Registry dates
- Enumerated
- 2014-05-28
- Last updated
- 2024-12-08
- Certified
- 2024-12-08
Frequently asked questions
- What is Chih-Hsin Hsu's NPI number?
- Chih-Hsin Hsu's National Provider Identifier (NPI) is 1629480389, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chih-Hsin Hsu's specialty?
- Chih-Hsin Hsu is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Chih-Hsin Hsu located?
- Chih-Hsin Hsu's practice location on file with NPPES is 3801 Howe St, Oakland, CA 94611-5312.
- What is Chih-Hsin Hsu's phone number?
- The practice phone number listed in the NPPES registry for Chih-Hsin Hsu is (646) 250-6234.
- Does Chih-Hsin Hsu accept Medicare?
- Chih-Hsin Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chih-Hsin Hsu's NPI active?
- Yes — Chih-Hsin Hsu's NPI (1629480389) is active in the NPPES registry as of the last update on 2024-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.