John Martin, PHD
NPI 1356541593 · Marriage & Family Therapist · Redwood City, CA
John Martin, PHD is a Marriage & Family Therapist provider in Redwood City, CA (NPI 1356541593).
Provider details
- NPI number
- 1356541593
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MFC27950 (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
18 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
- 2007-07-24
- Last updated
- 2007-07-24
Frequently asked questions
- What is John Martin's NPI number?
- John Martin's National Provider Identifier (NPI) is 1356541593, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Martin's specialty?
- John Martin is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is John Martin located?
- John Martin's practice location on file with NPPES is 617 Veterans Blvd, Redwood City, CA 94063-1496.
- What is John Martin's phone number?
- The practice phone number listed in the NPPES registry for John Martin is (650) 324-8945.
- Is John Martin's NPI active?
- Yes — John Martin's NPI (1356541593) is active in the NPPES registry as of the last update on 2007-07-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.