NPPES file of Aug 9, 2026

William John Linder, MD

Psychiatry Physician · Cerritos, CA

William John Linder, MD is a psychiatry physician with a practice address in Cerritos, California, and NPI 1912018169, issued on Aug 31, 2006. Check the license (California C22224, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1912018169
Name
William John Linder
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
C22224 CA
Self-reported in NPPES; status is on the state search
Practice location
17215 Studebaker RD, Cerritos, CA 90703
Phone
(562) 408-4106
Enumerated
Aug 31, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(562) 860-9398
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 17215 Studebaker RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jean Bradshaw, MFT, M.S., M.A., CHTMarriage & Family Therapist1699927939
  2. Christine Desandre, PSY.D.Clinical Psychologist1013108547
  3. Kandi DudleyMarriage & Family Therapist1194845453
  4. Johnny Edrozo, M.D.Child & Adolescent Psychiatry Physician1134149024
  5. Michael Franc, PSYDClinical Psychologist1184915779
  6. Balasubramaniam Gulasekaram, M.D.Behavioral Neurology & Neuropsychiatry Physician1396709994

Verify William John Linder in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C22224
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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William John Linder among 8,673 psychiatry physician records in California

William John Linder, MD is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 2% of them.

  • NPI issued2006 · 2% of these records are older, 67% newer
  • In a Medicare fileNo · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 38% of these records are
  • Record last updated2007 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatry Physician providers in California

There are 8,673 psychiatry physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Rhoda Bernardez, M.D.Cerritos, CA 907031144309790
  2. Christopher Camilleri, M.D.Cerritos, CA 907031154419836
  3. Yung Cheng Joseph Chen, M.D.Cerritos, CA 907031265428817
  4. Emad Daniel, M.D.Cerritos, CA 907031205034287
  5. Jorge Dubin, MDCerritos, CA 907031497845614
  6. Estela Ilagan, M.D.Cerritos, CA 907031124117064
  7. Xin Kang, M.D.Cerritos, CA 907031053458166
  8. Morteza Marandi, M.D.Cerritos, CA 907031366587594

Common questions

What is William John Linder, MD's NPI number?

William John Linder, MD's National Provider Identifier (NPI) is 1912018169, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William John Linder, MD located?

The NPPES record lists a practice address at 17215 Studebaker RD, Cerritos, CA, 90703. Phone: (562) 408-4106. Providers update this record themselves, so call before visiting.

How can I verify William John Linder, MD's license?

NPPES lists California license number C22224, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.