Greggory Mayne
NPI 1851529648 · Marriage & Family Therapist · Petaluma, CA
Greggory Mayne is a Marriage & Family Therapist provider in Petaluma, CA (NPI 1851529648).
Provider details
- NPI number
- 1851529648
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 115984 (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
16 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
- 2009-06-30
- Last updated
- 2026-01-07
- Certified
- 2026-01-07
Frequently asked questions
- What is Greggory Mayne's NPI number?
- Greggory Mayne's National Provider Identifier (NPI) is 1851529648, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Greggory Mayne's specialty?
- Greggory Mayne is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Greggory Mayne located?
- Greggory Mayne's practice location on file with NPPES is 5350 Old Redwood Hwy N, Petaluma, CA 94954.
- What is Greggory Mayne's phone number?
- The practice phone number listed in the NPPES registry for Greggory Mayne is (707) 565-4420.
- Is Greggory Mayne's NPI active?
- Yes — Greggory Mayne's NPI (1851529648) is active in the NPPES registry as of the last update on 2026-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.