Gregory Alter Group, Inc.
NPI 1154083558 · Clinical Psychologist · San Rafael, CA
Gregory Alter Group, Inc. is a Clinical Psychologist organization in San Rafael, CA (NPI 1154083558).
Provider details
- NPI number
- 1154083558
- Entity type
- Organization
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Gregory Alter, Provider/Owner(510) 734-0885
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Psychologist103T00000X
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
4 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
- 2021-10-12
- Last updated
- 2021-10-15
- Certified
- 2021-10-15
Frequently asked questions
- What is Gregory Alter Group, Inc.'s NPI number?
- Gregory Alter Group, Inc.'s National Provider Identifier (NPI) is 1154083558, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Gregory Alter Group, Inc.?
- Gregory Alter Group, Inc. is classified in the NPPES registry as Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Gregory Alter Group, Inc. located?
- Gregory Alter Group, Inc.'s practice location on file with NPPES is 31 Carroll Ct, San Rafael, CA 94903-3719.
- What is Gregory Alter Group, Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Gregory Alter Group, Inc. is (510) 734-0885.
- Who is the authorized official for Gregory Alter Group, Inc.?
- The authorized official listed on Gregory Alter Group, Inc.'s NPPES record is Gregory Alter, Provider/Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Gregory Alter Group, Inc.'s NPI active?
- Yes — Gregory Alter Group, Inc.'s NPI (1154083558) is active in the NPPES registry as of the last update on 2021-10-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.