DR. WILLIAM SCOTT GERWIN PH.D.
NPI 1144469941
Psychologist in Kentfield, CA

Active since February 18, 2009
1036 SIR FRANCIS DRAKE BLVD, KENTFIELD, CA 94904(415) 721-7290(415) 721-7290 Get Directions Write a Review

NPPES record last updated: February 18, 2009. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. William Scott Gerwin Ph.d. NPPES

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

DR. WILLIAM SCOTT GERWIN PH.D. (NPI 1144469941) is an individual psychologist in Kentfield, California, licensed in California (PSY18405) and active in the NPI registry since February 2009.

NPPES Registry Identity

NPI1144469941
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameDR. WILLIAM SCOTT GERWINCredential: PH.D.
Location Address1036 SIR FRANCIS DRAKE BLVDKentfield, CA 94904-1427
Mailing AddressPo Box 678Corte Madera, CA 94976-0678 · (415) 721-7290 · Fax (415) 721-7290
Fax(415) 721-7290
Sole ProprietorYes
Enumeration DateFebruary 18, 2009
NPI 1144469941 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License Licensed in CA · PSY18405
Definition

A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.

1036 SIR FRANCIS DRAKE BLVD, Kentfield, CA 94904

Accepted Insurance

Other Providers at the Same Location NPPES 20

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

Dentist (General Practice)
1036 SIR FRANCIS DRAKE BLVD
KENTFIELD, CA 94904
Psychologist (Clinical)
1036 SIR FRANCIS DRAKE BLVD, STE. 200
KENTFIELD, CA 94904
Psychologist (Clinical)
1036 SIR FRANCIS DRAKE BLVD
KENTFIELD, CA 94904
Marriage & Family Therapist
1036 SIR FRANCIS DRAKE BLVD
KENTFIELD, CA 94904
Marriage & Family Therapist
1036 SIR FRANCIS DRAKE BLVD
KENTFIELD, CA 94904
Psychologist (Clinical)
1036 SIR FRANCIS DRAKE BLVD, SUITE 200
KENTFIELD, CA 94904
Dentist (Pediatric Dentistry)
1036 SIR FRANCIS DRAKE BLVD
KENTFIELD, CA 94904
Marriage & Family Therapist
1036 SIR FRANCIS DRAKE BLVD
KENTFIELD, CA 94904

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 William Gerwin's NPI number?

The NPI number for William Gerwin is 1144469941. It was assigned to this individual provider in the NPPES registry on February 18, 2009.

Where is William Gerwin located?

William Gerwin practices at 1036 Sir Francis Drake Blvd, Kentfield, CA 94904. The listed phone number is (415) 721-7290.

What is William Gerwin's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

What insurance does William Gerwin accept?

Health plans from Providence Health Plan list William Gerwin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Gerwin was last updated on February 18, 2009. NPI Profile syncs with the weekly NPPES data releases published by CMS.