Alexander Chen, M.D.
NPI 1861556623 · Child & Adolescent Psychiatry Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Chen, M.D. is a Child & Adolescent Psychiatry Physician provider in San Francisco, CA (NPI 1861556623).
Provider details
- NPI number
- 1861556623
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A78692 (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
14 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.
Practice location
Mailing address
Additional practice locations (13)
- 380 Coalinga PlzCoalinga, CA 93210-1704Phone: (855) 343-1057
- 386 Coalinga PlzCoalinga, CA 93210-1704Phone: (855) 343-1057
- 2731 W Olive AveFresno, CA 93728-2449Phone: (559) 233-5096
- 3467 W Shaw Ave Ste 101Fresno, CA 93711-3223Phone: (559) 271-3096
- 3636 N 1st St Ste 124Fresno, CA 93726-6818Phone: (855) 343-1057
- 3636 N 1st StSuite 112, 124Fresno, CA 93726-6818Phone: (855) 343-1057
- 1690 W Shaw Ave Ste 201Fresno, CA 93711-3519Phone: (855) 343-1057
- 3855 N West Ave,105, 108, 110Fresno, CA 93705-2759Phone: (559) 334-6433
- 3636 N 1st StSuite 135, 154, 162Fresno, CA 93726-6818Phone: (559) 476-2166
Registry dates
- Enumerated
- 2006-12-19
- Last updated
- 2026-05-22
- Certified
- 2026-05-22
Frequently asked questions
- What is Alexander Chen's NPI number?
- Alexander Chen's National Provider Identifier (NPI) is 1861556623, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Chen's specialty?
- Alexander Chen is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Chen located?
- Alexander Chen's practice location on file with NPPES is 3801 3rd St, San Francisco, CA 94124-1409.
- What is Alexander Chen's phone number?
- The practice phone number listed in the NPPES registry for Alexander Chen is (415) 337-4784.
- Does Alexander Chen accept Medicare?
- Alexander Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Chen's NPI active?
- Yes — Alexander Chen's NPI (1861556623) is active in the NPPES registry as of the last update on 2026-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.