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DR. RONALD HAIMOWITZ PH.D.
NPI 1306975313
Psychologist - Clinical in Napa, CA

Active since March 05, 2007Opted out of Medicare · through Apr 1, 2028
531 JEFFERSON ST, NAPA, CA 94559(707) 255-8540(707) 251-8540 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Ronald Haimowitz Ph.d. NPPES

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

DR. RONALD HAIMOWITZ PH.D. (NPI 1306975313) is an individual clinical provider in Napa, California, licensed in California (PSY7930) and active in the NPI registry since March 2007. He has opted out of Medicare through April 1, 2028.

NPPES Registry Identity

NPI1306975313
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameDR. RONALD HAIMOWITZCredential: PH.D.
Location Address531 JEFFERSON STNapa, CA 94559-3236
Mailing Address531 Jefferson StNapa, CA 94559-3236 · (707) 255-8540 · Fax (707) 251-8540
Phone(707) 255-8540
Fax(707) 251-8540
Sole ProprietorYes
Enumeration DateMarch 5, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1306975313 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in CA · PSY7930
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
531 JEFFERSON ST, Napa, CA 94559
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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. Ronald Haimowitz Ph.d. 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 April 1, 2022 through April 1, 2028.

Opt-Out Effective DateApril 1, 2022
Opt-Out In Effect ThroughApril 1, 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.

MS. MARY LOUISE CARSON LCSW
Social Worker (Clinical)
531 JEFFERSON ST
NAPA, CA 94559
Napa County (707) 224-3492

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 Ronald Haimowitz's NPI number?

The NPI number for Ronald Haimowitz is 1306975313. It was assigned to this individual provider in the NPPES registry on March 5, 2007.

Where is Ronald Haimowitz located?

Ronald Haimowitz practices at 531 Jefferson St, Napa, CA 94559. The listed phone number is (707) 255-8540.

What is Ronald Haimowitz's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Ronald Haimowitz enrolled in Medicare?

No. Ronald Haimowitz has opted out of Medicare through April 1, 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 Ronald Haimowitz was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.