Joan Steidinger, PH.D.
NPI 1245425644 · Clinical Psychologist · Mill Valley, CA
Joan Steidinger, PH.D. is a Clinical Psychologist provider in Mill Valley, CA (NPI 1245425644).
Provider details
- NPI number
- 1245425644
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- PSY 12505 (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
18 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
- 2007-09-09
- Last updated
- 2007-09-09
Frequently asked questions
- What is Joan Steidinger's NPI number?
- Joan Steidinger's National Provider Identifier (NPI) is 1245425644, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joan Steidinger's specialty?
- Joan Steidinger is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Joan Steidinger located?
- Joan Steidinger's practice location on file with NPPES is 311 Miller Ave, Mill Valley, CA 94941-2844.
- What is Joan Steidinger's phone number?
- The practice phone number listed in the NPPES registry for Joan Steidinger is (415) 288-4252.
- Is Joan Steidinger's NPI active?
- Yes — Joan Steidinger's NPI (1245425644) is active in the NPPES registry as of the last update on 2007-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.