Chiyon Won
NPI 1588912851 · Clinical Psychologist · San Francisco, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chiyon Won is a Clinical Psychologist provider in San Francisco, CA (NPI 1588912851).
Provider details
- NPI number
- 1588912851
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- PSY26896 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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.
Practice location
Mailing address
Additional practice locations (1)
- 2872 Ygnacio Valley Rd # 107Walnut Creek, CA 94598-3534Phone: (925) 728-4650
Registry dates
- Enumerated
- 2012-08-17
- Last updated
- 2026-01-28
- Certified
- 2026-01-28
Frequently asked questions
- What is Chiyon Won's NPI number?
- Chiyon Won's National Provider Identifier (NPI) is 1588912851, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chiyon Won's specialty?
- Chiyon Won is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Chiyon Won located?
- Chiyon Won's practice location on file with NPPES is 601 Clement St, San Francisco, CA 94118-2206.
- What is Chiyon Won's phone number?
- The practice phone number listed in the NPPES registry for Chiyon Won is (415) 668-6955.
- Does Chiyon Won accept Medicare?
- Chiyon Won is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chiyon Won's NPI active?
- Yes — Chiyon Won's NPI (1588912851) is active in the NPPES registry as of the last update on 2026-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.