James E. Nirenstein, PH.D. M.F.T.
Marriage & Family Therapist · Walnut Creek, CA
James E. Nirenstein, PH.D. M.F.T. is a marriage & family therapist with a practice address in Walnut Creek, California, and NPI 1699794156, issued on Jul 18, 2006. Check the license (California M12843, 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
- James E. Nirenstein
- Credential
- PH.D. M.F.T.
- Primary taxonomy
- Marriage & Family Therapist 106H00000X
- License number
- M12843 CA
Self-reported in NPPES; status is on the state search - Practice location
- 45 Quail CT Ste 200, Walnut Creek, CA 94596
- Phone
- (925) 934-6943
- Enumerated
- Jul 18, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (925) 838-8586
- Entity
- Type 1 · individual
8 nearest marriage & family therapist records → All 59,889 in California → Look up another NPI →
Also registered at 45 Quail CT Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amelie De Mahy, L.ACAcupuncturist1538575568
Verify James E. Nirenstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license M12843Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
James E. Nirenstein among 59,889 marriage & family therapist records in California
James E. Nirenstein, PH.D. M.F.T. is one of 59,889 marriage & family therapist records with a practice address in California. 4% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than under 1% of them.
- NPI issued2006 · under 1% of these records are older, 93% newer
- In a Medicare fileNo · 4% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2007 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 106H00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
315 marriage & family therapist records list a practice address in Walnut Creek
They are 315 of the 6,170 NPPES records with a practice address in Walnut Creek, and 59,889 marriage & family therapist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 59,889 in California → Every provider in Walnut Creek → Marriage & Family Therapist nationwide →
The 8 marriage & family therapist records with the nearest ZIP codes
- Julia Avedisian-Aguilar, MFTWalnut Creek, CA 945961972614162
- Susan Beitler, MFTWalnut Creek, CA 945961598780009
- Gail Cristancho, LMFTWalnut Creek, CA 945961508896440
- Claudia Gerst, LMFTWalnut Creek, CA 945961457385767
- Lois Gradwell, MFTWalnut Creek, CA 945961811968860
- Cynthia Greif-Neill, LMFTWalnut Creek, CA 945961497794853
- Steven Harrison, M.F.T.Walnut Creek, CA 945961023008760
- Karen Kleckner, M.A., L.M.F.T.Walnut Creek, CA 945961801802467
Common questions
What is James E. Nirenstein, PH.D. M.F.T.'s NPI number?
James E. Nirenstein, PH.D. M.F.T.'s National Provider Identifier (NPI) is 1699794156, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James E. Nirenstein, PH.D. M.F.T. located?
The NPPES record lists a practice address at 45 Quail CT Ste 200, Walnut Creek, CA, 94596. Phone: (925) 934-6943. Providers update this record themselves, so call before visiting.
How can I verify James E. Nirenstein, PH.D. M.F.T.'s license?
NPPES lists California license number M12843, 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), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.