DR. GARY AIDAN HAYES PH.D
NPI 1801161203
Psychologist - Clinical in Napa, CA

Q: What is Gary Hayes's NPI number?

The NPI number for Gary Hayes is 1801161203. It was assigned to this individual provider in the NPPES registry on March 19, 2012.

Q: What is Gary Hayes's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Gary Hayes was last updated on March 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.

Active since March 19, 2012Accepts Medicare Assignment

1303 JEFFERSON ST SUITE 600A, NAPA, CA 94559(415) 827-9969(707) 253-0457 Get Directions Write a Review

NPPES record last updated: March 19, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Dr. Gary Aidan Hayes Ph.d NPPES

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

DR. GARY AIDAN HAYES PH.D (NPI 1801161203) is an individual clinical provider in Napa, California, licensed in California (PSY10335) and active in the NPI registry since March 2012. He is a graduate of Other (1986).

NPPES Registry Identity

NPI1801161203

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameDR. GARY AIDAN HAYESCredential: PH.D

Location Address1303 JEFFERSON ST SUITE 600ANapa, CA 94559

Mailing Address1303 Jefferson St Suite 600aNapa, CA 94559 · (415) 827-9969 · Fax (707) 253-0457

Phone(415) 827-9969

Fax(707) 253-0457

Sole ProprietorYes

Medical School CMSOtherGraduated 1986

Enumeration DateMarch 19, 2012

Last NPPES UpdateMarch 19, 2025

✔ NPI 1801161203 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 · PSY10335

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.

1303 JEFFERSON ST SUITE 600A, 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

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gary Aidan Hayes Ph.d is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7517863228

PECOS Enrollment IDI20250429001297

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94559 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$192.16 typical visit price

range $65.08 – $192.16

Typical copayment $48.04 (range $16.27 – $48.04)

Most-billed visit code 99205

Established Patient

$113.15 typical visit price

range $21.86 – $157.83

Typical copayment $28.28 (range $5.46 – $39.45)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Gary Hayes's NPI number?

The NPI number for Gary Hayes is 1801161203. It was assigned to this individual provider in the NPPES registry on March 19, 2012.

Where is Gary Hayes located?

Gary Hayes practices at 1303 Jefferson St Suite 600A, Napa, CA 94559. The listed phone number is (415) 827-9969.

What is Gary Hayes's specialty?

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

Is Gary Hayes enrolled in Medicare?

Yes. Gary Hayes is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Gary Hayes was last updated on March 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.