Alan Chen, M.D.
NPI 1598111874 · Psychiatry Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alan Chen, M.D. is a Psychiatry Physician provider in Los Angeles, CA (NPI 1598111874).
Provider details
- NPI number
- 1598111874
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
83% 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 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 174 | 32 |
| Sertraline Hcl | 86 | 16 |
| Gabapentin | 69 | 18 |
| Prazosin Hcl | 57 | — |
| Lurasidone Hcl | 53 | — |
| Aripiprazole | 51 | — |
| Escitalopram Oxalate | 45 | — |
Practice location
Mailing address
Additional practice locations (1)
- 1200 N State StLos Angeles, CA 90033-1029Phone: (323) 409-5555
Registry dates
- Enumerated
- 2016-05-05
- Last updated
- 2022-03-29
- Certified
- 2022-03-29
Frequently asked questions
- What is Alan Chen's NPI number?
- Alan Chen's National Provider Identifier (NPI) is 1598111874, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alan Chen's specialty?
- Alan Chen is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Alan Chen located?
- Alan Chen's practice location on file with NPPES is 1520 San Pablo St Ste 1652, Los Angeles, CA 90033-5310.
- What is Alan Chen's phone number?
- The practice phone number listed in the NPPES registry for Alan Chen is (323) 442-6000.
- Does Alan Chen accept Medicare?
- Alan Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alan Chen's NPI active?
- Yes — Alan Chen's NPI (1598111874) is active in the NPPES registry as of the last update on 2022-03-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.