MS. HILLARY KOSTER MS
NPI 1851475032
Psychologist in San Francisco, CA

Active since October 25, 2006
2120 MARKET STREET, STE 209, SAN FRANCISCO, CA 94114(415) 810-5572 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Ms. Hillary Koster Ms NPPES

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

MS. HILLARY KOSTER MS (NPI 1851475032) is an individual psychologist in San Francisco, California, licensed in California (MFC32149) and active in the NPI registry since October 2006.

NPPES Registry Identity

NPI1851475032
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameMS. HILLARY KOSTERCredential: MS
Location Address2120 MARKET STREET, STE 209San Francisco, CA 94114-1375
Mailing Address2120 Market Street, Ste 209San Francisco, CA 94114-1375 · (415) 810-5572
Sole ProprietorNo
Enumeration DateOctober 25, 2006
Last NPPES UpdateSeptember 11, 2025
NPI 1851475032 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License Licensed in CA · MFC32149
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.
Also ListedMarriage & Family TherapistTaxonomy 106H00000X · License MFC32149

Other Providers at the Same Location NPPES 2

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

Marriage & Family Therapist
2120 MARKET STREET, SUITE 209
SAN FRANCISCO, CA 94114
Marriage & Family Therapist
2120 MARKET STREET, #209
SAN FRANCISCO, CA 94114

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 Hillary Koster's NPI number?

The NPI number for Hillary Koster is 1851475032. It was assigned to this individual provider in the NPPES registry on October 25, 2006.

Where is Hillary Koster located?

Hillary Koster practices at 2120 Market Street Ste 209, San Francisco, CA 94114. The listed phone number is (415) 810-5572.

What is Hillary Koster's specialty?

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

When was this NPI record last updated?

The NPPES record for Hillary Koster was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.