William Hanna, PSY.D.
NPI 1568611085 · Clinical Psychologist · San Rafael, CA
William Hanna, PSY.D. is a Clinical Psychologist provider in San Rafael, CA (NPI 1568611085).
Provider details
- NPI number
- 1568611085
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY22136 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
17 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
- 2008-09-09
- Last updated
- 2008-09-09
Frequently asked questions
- What is William Hanna's NPI number?
- William Hanna's National Provider Identifier (NPI) is 1568611085, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hanna's specialty?
- William Hanna is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is William Hanna located?
- William Hanna's practice location on file with NPPES is 123 N San Pedro Rd, San Rafael, CA 94903-4271.
- What is William Hanna's phone number?
- The practice phone number listed in the NPPES registry for William Hanna is (415) 507-1727.
- Is William Hanna's NPI active?
- Yes — William Hanna's NPI (1568611085) is active in the NPPES registry as of the last update on 2008-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.