Bill Chen
NPI 1023578713 · Psychiatry Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bill Chen is a Psychiatry Physician provider in San Francisco, CA (NPI 1023578713).
Provider details
- NPI number
- 1023578713
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
- License
- 189587 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
12 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 12 | $220 |
Typical Medicare-allowed amounts for these services range $220–$220 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-03-20
- Last updated
- 2023-08-29
- Certified
- 2023-08-29
Frequently asked questions
- What is Bill Chen's NPI number?
- Bill Chen's National Provider Identifier (NPI) is 1023578713, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bill Chen's specialty?
- Bill Chen is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Bill Chen located?
- Bill Chen's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143-2204.
- What is Bill Chen's phone number?
- The practice phone number listed in the NPPES registry for Bill Chen is (415) 476-1000.
- Does Bill Chen accept Medicare?
- Bill Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bill Chen's NPI active?
- Yes — Bill Chen's NPI (1023578713) is active in the NPPES registry as of the last update on 2023-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.