William Schwimmer, PHD
NPI 1053681361 · Clinical Psychologist · Sebastopol, CA
William Schwimmer, PHD is a Clinical Psychologist provider in Sebastopol, CA (NPI 1053681361).
Provider details
- NPI number
- 1053681361
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY7300 (CA)
Specialties & taxonomies
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
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2012-01-03
- Last updated
- 2012-01-03
Frequently asked questions
- What is William Schwimmer's NPI number?
- William Schwimmer's National Provider Identifier (NPI) is 1053681361, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Schwimmer's specialty?
- William Schwimmer is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is William Schwimmer located?
- William Schwimmer's practice location on file with NPPES is 11250 Barnett Valley Rd, Sebastopol, CA 95472-9555.
- What is William Schwimmer's phone number?
- The practice phone number listed in the NPPES registry for William Schwimmer is (707) 829-8566.
- Is William Schwimmer's NPI active?
- Yes — William Schwimmer's NPI (1053681361) is active in the NPPES registry as of the last update on 2012-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.