Alan Hsu, M.D.
NPI 1861636763 · Psychiatry Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alan Hsu, M.D. is a Psychiatry Physician provider in San Diego, CA (NPI 1861636763).
Provider details
- NPI number
- 1861636763
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 258609 (NY)
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
17 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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Trazodone Hcl | 26 |
| Lorazepam | 23 |
| Alprazolam | 17 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 17 |
| Mirtazapine | 16 |
| Escitalopram Oxalate | 15 |
| Bupropion Hclbrand: Bupropion Xl | 13 |
| Quetiapine Fumarate | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-04-23
- Last updated
- 2014-08-13
Frequently asked questions
- What is Alan Hsu's NPI number?
- Alan Hsu's National Provider Identifier (NPI) is 1861636763, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alan Hsu's specialty?
- Alan Hsu is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Alan Hsu located?
- Alan Hsu's practice location on file with NPPES is 8810 Rio San Diego Dr, San Diego, CA 92108-1698.
- What is Alan Hsu's phone number?
- The practice phone number listed in the NPPES registry for Alan Hsu is (619) 400-5000.
- Does Alan Hsu accept Medicare?
- Alan Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alan Hsu's NPI active?
- Yes — Alan Hsu's NPI (1861636763) is active in the NPPES registry as of the last update on 2014-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.