William Darby, M.D.
NPI 1023455359 · Psychiatry Physician · Los Angeles, CA
William Darby, M.D. is a Psychiatry Physician provider in Los Angeles, CA (NPI 1023455359).
Provider details
- NPI number
- 1023455359
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A134060 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Allopathic & Osteopathic Physicians
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)
- 1012 7th St Unit 14Santa Monica, CA 90403-4027Phone: (615) 945-9688
Registry dates
- Enumerated
- 2013-05-28
- Last updated
- 2020-03-24
- Certified
- 2020-03-24
Frequently asked questions
- What is William Darby's NPI number?
- William Darby's National Provider Identifier (NPI) is 1023455359, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Darby's specialty?
- William Darby is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is William Darby located?
- William Darby's practice location on file with NPPES is 1823 Sawtelle Blvd Ste 4, Los Angeles, CA 90025-5532.
- What is William Darby's phone number?
- The practice phone number listed in the NPPES registry for William Darby is (310) 206-9786.
- Is William Darby's NPI active?
- Yes — William Darby's NPI (1023455359) is active in the NPPES registry as of the last update on 2020-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.