Gillian Marcus, LMFT
NPI 1528287208 · Marriage & Family Therapist · Los Angeles, CA
Enrolled with Medicare as Practitioner - Marriage and Family Therapist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gillian Marcus, LMFT is a Marriage & Family Therapist provider in Los Angeles, CA (NPI 1528287208).
Provider details
- NPI number
- 1528287208
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- LMFT
- Sex
- Female
- Sole proprietor
- Yes
- License
- 42651 (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
2 documented practice locations
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
Additional practice locations (1)
- 22231 Mulholland Hwy Ste 208Calabasas, CA 91302-5150Phone: (818) 222-9300
Registry dates
- Enumerated
- 2007-04-24
- Last updated
- 2018-05-18
Frequently asked questions
- What is Gillian Marcus's NPI number?
- Gillian Marcus's National Provider Identifier (NPI) is 1528287208, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gillian Marcus's specialty?
- Gillian Marcus is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Gillian Marcus located?
- Gillian Marcus's practice location on file with NPPES is 822 S Robertson Blvd Ste 303, Los Angeles, CA 90035.
- What is Gillian Marcus's phone number?
- The practice phone number listed in the NPPES registry for Gillian Marcus is (323) 487-0408.
- Does Gillian Marcus accept Medicare?
- Gillian Marcus is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gillian Marcus's NPI active?
- Yes — Gillian Marcus's NPI (1528287208) is active in the NPPES registry as of the last update on 2018-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.