Gary Hayes, PH.D
NPI 1801161203 · Clinical Psychologist · Napa, CA
Enrolled with Medicare as Practitioner - Psychologist Billing Independently · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Hayes, PH.D is a Clinical Psychologist provider in Napa, CA (NPI 1801161203).
Provider details
- NPI number
- 1801161203
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY10335 (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
- 2012-03-19
- Last updated
- 2025-03-19
Frequently asked questions
- What is Gary Hayes's NPI number?
- Gary Hayes's National Provider Identifier (NPI) is 1801161203, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Hayes's specialty?
- Gary Hayes is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Gary Hayes located?
- Gary Hayes's practice location on file with NPPES is 1303 Jefferson St Suite 600a, Napa, CA 94559.
- What is Gary Hayes's phone number?
- The practice phone number listed in the NPPES registry for Gary Hayes is (415) 827-9969.
- Does Gary Hayes accept Medicare?
- Gary Hayes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Hayes's NPI active?
- Yes — Gary Hayes's NPI (1801161203) is active in the NPPES registry as of the last update on 2025-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.