Gillian Steffey
NPI 1689525131 · Marriage & Family Therapist · Oceanside, CA
Gillian Steffey is a Marriage & Family Therapist provider in Oceanside, CA (NPI 1689525131).
Provider details
- NPI number
- 1689525131
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 158125 (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
Under 1 yr in 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
- 2026-02-09
- Last updated
- 2026-02-09
- Certified
- 2026-02-09
Frequently asked questions
- What is Gillian Steffey's NPI number?
- Gillian Steffey's National Provider Identifier (NPI) is 1689525131, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gillian Steffey's specialty?
- Gillian Steffey is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Gillian Steffey located?
- Gillian Steffey's practice location on file with NPPES is 3220 Mission Ave Ste 2, Oceanside, CA 92058-1354.
- What is Gillian Steffey's phone number?
- The practice phone number listed in the NPPES registry for Gillian Steffey is (760) 512-8883.
- Is Gillian Steffey's NPI active?
- Yes — Gillian Steffey's NPI (1689525131) is active in the NPPES registry as of the last update on 2026-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.