Mark Marion, LMFT
NPI 1730237884 · Marriage & Family Therapist · San Francisco, CA
Mark Marion, LMFT is a Marriage & Family Therapist provider in San Francisco, CA (NPI 1730237884).
Provider details
- NPI number
- 1730237884
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- LMFT
- Sex
- Male
- Sole proprietor
- Yes
- License
- 27346 (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
19 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
- 2007-01-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Marion's NPI number?
- Mark Marion's National Provider Identifier (NPI) is 1730237884, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Marion's specialty?
- Mark Marion is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Mark Marion located?
- Mark Marion's practice location on file with NPPES is 315 Sanchez St, San Francisco, CA 94114-1615.
- What is Mark Marion's phone number?
- The practice phone number listed in the NPPES registry for Mark Marion is (415) 241-9005.
- Is Mark Marion's NPI active?
- Yes — Mark Marion's NPI (1730237884) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.