William Provosty, MD
Forensic Psychiatry Physician · Los Angeles, CA
William Provosty, MD is a forensic psychiatry physician with a practice address in Los Angeles, California, and NPI 1003440223, issued on Feb 26, 2020. Check the license (California A200462, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Provosty
- Credential
- MD
- Primary taxonomy
- Forensic Psychiatry Physician 2084F0202X
- License number
- A200462 CA
Self-reported in NPPES; status is on the state search - Practice location
- PO Box 86125, Los Angeles, CA 90086
- Phone
- (323) 409-4942
- Enumerated
- Feb 26, 2020
- Record last updated
- Nov 10, 2025
- Entity
- Type 1 · individual
8 nearest forensic psychiatry physician records → All 109 in California → Look up another NPI →
Verify William Provosty in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A200462Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average forensic psychiatry physician in 2024
138 Medicare Part D claims for 11 beneficiaries, against an average of 803 among the 199 providers of this specialty who prescribed in Part D.
Most prescribed
- Escitalopram Oxalate17 claims
- Quetiapine Fumarate17 claims
- Clozapine14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
William Provosty among 109 forensic psychiatry physician records in California
William Provosty, MD is one of 109 forensic psychiatry physician records with a practice address in California. 41% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 96% of them.
- NPI issued2020 · 96% of these records are older, 2% newer
- In a Medicare fileYes · 41% of these records are
- In the CMS Doctors and Clinicians fileNo · 14% of these records are
- Record last updated2025 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084F0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Forensic Psychiatry Physician providers in California
There are 109 forensic psychiatry physician records in California.
All 109 in California → Every provider in Los Angeles → Forensic Psychiatry Physician nationwide →
The 8 forensic psychiatry physician records with the nearest ZIP codes
- Mark Jaffe, M.D.West Hollywood, CA 900691477763472
- Praveen Kambam, M.D.Los Angeles, CA 900641912034141
- John Hochman, MDLos Angeles, CA 900481063418788
- Paul Bohn, MDLos Angeles, CA 900251568488963
- Alisha Smith, M.D.Los Angeles, CA 900121447580998
- Saul Faerstein, M.D.Beverly Hills, CA 902101336359421
- Mathis Abrams, M.D., J.D.Beverly Hills, CA 902111497789762
- Gordon Plotkin, M.D.Beverly Hills, CA 902121235332685
Common questions
What is William Provosty, MD's NPI number?
William Provosty, MD's National Provider Identifier (NPI) is 1003440223, issued on Feb 26, 2020. An NPI identifies a provider in billing; it is not a license.
Where is William Provosty, MD located?
The NPPES record lists a practice address at PO Box 86125, Los Angeles, CA, 90086. Phone: (323) 409-4942. Providers update this record themselves, so call before visiting.
How can I verify William Provosty, MD's license?
NPPES lists California license number A200462, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Provosty, MD prescribe under Medicare Part D?
In 2024, William Provosty, MD had 138 Medicare Part D claims for 11 beneficiaries; the average among forensic psychiatry physician prescribers was 803. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.