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DR. JAMES E. NIRENSTEIN PH.D. M.F.T.
NPI 1699794156
Marriage & Family Therapist in Walnut Creek, CA

Active since July 18, 2006Opted out of Medicare · through Feb 15, 2028
45 QUAIL CT STE 200, WALNUT CREEK, CA 94596(925) 934-6943(925) 838-8586 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. James E. Nirenstein Ph.d. M.f.t. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JAMES E. NIRENSTEIN PH.D. M.F.T. (NPI 1699794156) is an individual marriage & family therapist in Walnut Creek, California, licensed in California (M12843) and active in the NPI registry since July 2006. He has opted out of Medicare through February 15, 2028.

NPPES Registry Identity

NPI1699794156
Entity TypeIndividualMale
Primary Taxonomy106H00000X
Provider Legal NameDR. JAMES E. NIRENSTEINCredential: PH.D. M.F.T.
Location Address45 QUAIL CT STE 200Walnut Creek, CA 94596-8729
Mailing Address45 Quail Ct Ste 200Walnut Creek, CA 94596-8729 · (925) 934-6943 · Fax (925) 838-8586
Phone(925) 934-6943
Fax(925) 838-8586
Sole ProprietorYes
Enumeration DateJuly 18, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1699794156 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMarriage & Family TherapistBehavioral Health & Social Service Providers
Taxonomy Code106H00000X
License✔ Licensed in CA · M12843
Definition

A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups.

45 QUAIL CT STE 200, Walnut Creek, CA 94596
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. James E. Nirenstein Ph.d. M.f.t. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from February 15, 2024 through February 15, 2028.

Opt-Out Effective DateFebruary 15, 2024
Opt-Out In Effect ThroughFebruary 15, 2028Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

AMELIE DE MAHY L.AC
Acupuncturist
45 QUAIL CT STE 200
WALNUT CREEK, CA 94596
Contra Costa County (510) 384-5165

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is James Nirenstein's NPI number?

The NPI number for James Nirenstein is 1699794156. It was assigned to this individual provider in the NPPES registry on July 18, 2006.

Where is James Nirenstein located?

James Nirenstein practices at 45 Quail Ct Ste 200, Walnut Creek, CA 94596. The listed phone number is (925) 934-6943.

What is James Nirenstein's specialty?

The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.

Is James Nirenstein enrolled in Medicare?

No. James Nirenstein has opted out of Medicare through February 15, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for James Nirenstein was last updated on July 8, 2007. NPI Profile syncs with the weekly NPPES data releases published by CMS.