William R. Halloran, M.D.
Child & Adolescent Psychiatry Physician · Chico, CA
William R. Halloran, M.D. is a child & adolescent psychiatry physician with a practice address in Chico, California, and NPI 1023149739, issued on Mar 7, 2007. Check the license (California G86643, 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 R. Halloran
- Credential
- M.D.
- Primary taxonomy
- Child & Adolescent Psychiatry Physician 2084P0804X
- License number
- G86643 CA
Self-reported in NPPES; status is on the state search - Practice location
- 130 Amber Grove Dr, Chico, CA 95973
- Phone
- (530) 895-7634
- Enumerated
- Mar 7, 2007
- Record last updated
- Jul 31, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (530) 342-2440
- Entity
- Type 1 · individual
8 nearest child & adolescent psychiatry physician records → All 1,009 in California → Look up another NPI →
Verify William R. Halloran in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G86643Check 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 R. Halloran among 1,009 child & adolescent psychiatry physician records in California
William R. Halloran, M.D. is one of 1,009 child & adolescent psychiatry physician records with a practice address in California. 55% 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 2007, is newer than 35% of them.
- NPI issued2007 · 35% of these records are older, 41% newer
- In a Medicare fileNo · 55% of these records are
- In the CMS Doctors and Clinicians fileNo · 21% of these records are
- Record last updated2008 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0804X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Child & Adolescent Psychiatry Physician providers in California
There are 1,009 child & adolescent psychiatry physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,009 in California → Every provider in Chico → Child & Adolescent Psychiatry Physician nationwide →
The 8 child & adolescent psychiatry physician records with the nearest ZIP codes
- Anne Barnes, M.D.Chico, CA 959731831290469
- Jillian Yoshimoto, D.O.Paradise, CA 959691215296041
- Jonathan Kirscher, M.D.Oroville, CA 959651942521620
- Hugo Biertuempfel, M.D.Yuba City, CA 959911043341365
- Shari Fox, M.D.Grass Valley, CA 959451609994169
- Alcira Sahami, MDRedding, CA 960011003975749
- Harpreet Kaur, M.DChico, CA 959281053626549
- Rumneet KullarChico, CA 959261457767741
Common questions
What is William R. Halloran, M.D.'s NPI number?
William R. Halloran, M.D.'s National Provider Identifier (NPI) is 1023149739, issued on Mar 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William R. Halloran, M.D. located?
The NPPES record lists a practice address at 130 Amber Grove Dr, Chico, CA, 95973. Phone: (530) 895-7634. Providers update this record themselves, so call before visiting.
How can I verify William R. Halloran, M.D.'s license?
NPPES lists California license number G86643, 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.