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WILLIAM PROVOSTY MD
NPI 1003440223
Psychiatry & Neurology - Forensic Psychiatry in Los Angeles, CA

Active since February 26, 2020PECOS Enrolled
PO BOX 86125, LOS ANGELES, CA 90086(323) 409-4942 Get Directions Write a Review

NPPES record last updated: November 10, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 10, 2025, Feb 26, 2020 (2 updates tracked since 2020).

About William Provosty Md NPPES

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

WILLIAM PROVOSTY MD (NPI 1003440223) is an individual forensic psychiatry provider in Los Angeles, California, licensed in California (A200462) and active in the NPI registry since February 2020. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1003440223
Entity TypeIndividualMale
Primary Taxonomy2084F0202X
Provider Legal NameWILLIAM PROVOSTYCredential: MD
Location AddressPO BOX 86125Los Angeles, CA 90086-0125
Mailing AddressPo Box 86125Los Angeles, CA 90086-0125
Phone(323) 409-4942
Sole ProprietorYes
Enumeration DateFebruary 26, 2020
Last NPPES UpdateNovember 10, 20252 updates tracked since enumeration
NPPES CertifiedNovember 10, 2025
✔ NPI 1003440223 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Forensic PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084F0202X
License✔ Licensed in CA · A200462
Definition
Forensic Psychiatry is a subspecialty with psychiatric focus on interrelationships with civil, criminal and administrative law, evaluation and specialized treatment of individuals involved with the legal system, incarcerated in jails, prisons, and forensic psychiatry hospitals.
PO BOX 86125, Los Angeles, CA 90086
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William Provosty Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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 Provosty's NPI number?

The NPI number for William Provosty is 1003440223. It was assigned to this individual provider in the NPPES registry on February 26, 2020.

Where is William Provosty located?

William Provosty practices at PO Box 86125, Los Angeles, CA 90086. The listed phone number is (323) 409-4942.

What is William Provosty's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Forensic Psychiatry, with taxonomy code 2084F0202X.

Is William Provosty enrolled in Medicare?

Yes. William Provosty is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Provosty was last updated on November 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.