Gillian Nathan, LCSW
NPI 1184755365 · Mental Health Counselor · San Francisco, CA
Gillian Nathan, LCSW is a Mental Health Counselor provider in San Francisco, CA (NPI 1184755365).
Provider details
- NPI number
- 1184755365
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
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
83% 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
- 2007-03-08
- Last updated
- 2009-02-27
Frequently asked questions
- What is Gillian Nathan's NPI number?
- Gillian Nathan's National Provider Identifier (NPI) is 1184755365, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gillian Nathan's specialty?
- Gillian Nathan is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Gillian Nathan located?
- Gillian Nathan's practice location on file with NPPES is 2120 Market St Ste 209, San Francisco, CA 94114-1375.
- What is Gillian Nathan's phone number?
- The practice phone number listed in the NPPES registry for Gillian Nathan is (415) 820-1603.
- Is Gillian Nathan's NPI active?
- Yes — Gillian Nathan's NPI (1184755365) is active in the NPPES registry as of the last update on 2009-02-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.