William Edward Callahan, MD
Psychiatry Physician · Aliso Viejo, CA
William Edward Callahan, MD is a psychiatry physician with a practice address in Aliso Viejo, California, and NPI 1538130513, issued on Jan 30, 2006. Check the license (California G62750, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Edward Callahan
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G62750 CA
Self-reported in NPPES; status is on the state search - Practice location
- 120 Vantis, Aliso Viejo, CA 92656
- Phone
- (949) 916-5656
- Enumerated
- Jan 30, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (949) 916-5657
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 120 Vantis
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Glass, M.D.Psychiatry Physician1578699823
- Anthony Kassir, M.D.Psychiatry Physician1679714695
Verify William Edward Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G62750Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William Edward Callahan among 8,673 psychiatry physician records in California
William Edward Callahan, 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).
12 psychiatry physician records list a practice address in Aliso Viejo
They are 12 of the 568 NPPES records with a practice address in Aliso Viejo, and 8,673 psychiatry physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 8,673 in California → Every provider in Aliso Viejo → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Jeffrey Forrest, M.D.Aliso Viejo, CA 926561205154705
- Bettina Franz, MD PHDAliso Viejo, CA 926561750405403
- Jeffrey Glass, M.D.Aliso Viejo, CA 926561578699823
- Michael Kabar, M.D.Aliso Viejo, CA 926561023011038
- Anthony Kassir, M.D.Aliso Viejo, CA 926561679714695
- Nabi Latif, M.D.Aliso Viejo, CA 926561386841500
- Peter LeeAliso Viejo, CA 926561942760756
- Delia Lupsa, M.D.Aliso Viejo, CA 926561679862684
Common questions
What is William Edward Callahan, MD's NPI number?
William Edward Callahan, MD's National Provider Identifier (NPI) is 1538130513, issued on Jan 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Edward Callahan, MD located?
The NPPES record lists a practice address at 120 Vantis, Aliso Viejo, CA, 92656. Phone: (949) 916-5656. Providers update this record themselves, so call before visiting.
How can I verify William Edward Callahan, MD's license?
NPPES lists California license number G62750, 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.