Joan Steidinger, PH.D.
Clinical Psychologist · Mill Valley, CA
Joan Steidinger, PH.D. is a clinical psychologist with a practice address in Mill Valley, California, and NPI 1245425644, issued on Sep 9, 2007. Check the license (California PSY 12505, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Joan Steidinger
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY 12505 CA
Self-reported in NPPES; status is on the state search - Practice location
- 311 Miller Ave, Mill Valley, CA 94941
- Phone
- (415) 288-4252
- Enumerated
- Sep 9, 2007
- Entity
- Type 1 · individual
Also registered at 311 Miller Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brigitte Apfel, M.D.Psychiatry Physician1073780714
- Roberta Bradshaw, MA, LMFTMarriage & Family Therapist1568823441
- Lois Friedlander, MA, MFT, CGPMarriage & Family Therapist1619216595
- Marilee Jasan, MDOrthopaedic Surgery Physician1093894016
- Sharon Skylor, P.T.Physical Therapist1689746604
- Brenna Taylor-Ford, LCSWClinical Social Worker1477250579
Verify Joan Steidinger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY 12505Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
18 clinical psychologist records list a Mill Valley practice address
They are 18 of the 653 NPPES records with a Mill Valley practice address, and 11,200 clinical psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 18 in Mill Valley → All 11,200 in California → Every provider in Mill Valley →
Other clinical psychologist records in California
- Tanya Aaen, PH.D.Martinez, CA1477518561
- Jack Aamot, PSY.D.Napa, CA1770711210
- Elena Abalo-Dehmer, PH.D.Anaheim, CA1942406368
- Brian Abary, PSY.DLos Angeles, CA1538354832
- Tatevik Abaryan, PH.D.Pacoima, CA1952682619
- Liana Abascal, PH.D.San Diego, CA1073740569
- Jessica Abdalla, PHDWalnut Creek, CA1558069211
- Mohamed Abdallah, PSY.DEl Centro, CA1912430851
- Megan Abdolrashidi, PSYDGilroy, CA1093293094
- Qutayba Abdullatif, PH.D.Pasadena, CA1134667751
Common questions
What is Joan Steidinger, PH.D.'s NPI number?
Joan Steidinger, PH.D.'s National Provider Identifier (NPI) is 1245425644, issued on Sep 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joan Steidinger, PH.D. located?
The NPPES record lists a practice address at 311 Miller Ave, Mill Valley, CA, 94941. Phone: (415) 288-4252. Providers update this record themselves, so call before visiting.
How can I verify Joan Steidinger, PH.D.'s license?
NPPES lists California license number PSY 12505, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.