Joyann Thornhill, LCSW
NPI 1356696389 · Clinical Social Worker · Costa Mesa, CA
Joyann Thornhill, LCSW is a Clinical Social Worker provider in Costa Mesa, CA (NPI 1356696389).
Provider details
- NPI number
- 1356696389
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 8506 (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
13 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
- 2012-07-16
- Last updated
- 2012-07-16
Frequently asked questions
- What is Joyann Thornhill's NPI number?
- Joyann Thornhill's National Provider Identifier (NPI) is 1356696389, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joyann Thornhill's specialty?
- Joyann Thornhill is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Joyann Thornhill located?
- Joyann Thornhill's practice location on file with NPPES is 299 Broadway Avenue, Costa Mesa, CA 92627.
- What is Joyann Thornhill's phone number?
- The practice phone number listed in the NPPES registry for Joyann Thornhill is (703) 623-9460.
- Is Joyann Thornhill's NPI active?
- Yes — Joyann Thornhill's NPI (1356696389) is active in the NPPES registry as of the last update on 2012-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.