NPPES file of Aug 9, 2026

William Charles Fox, MD

Anesthesiology Physician · Sacramento, CA

William Charles Fox, MD is an anesthesiology physician with a practice address in Sacramento, California, and NPI 1629465638, issued on Apr 17, 2015. Check the license (California C205991, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1629465638
Name
William Charles Fox
Credential
MD
Primary taxonomy
Anesthesiology Physician 207L00000X
License numbers
C205991 CA
MD-22875 HI
Self-reported in NPPES; status is on the state search
Practice location
3315 Watt Ave, Sacramento, CA 95821
Phone
(916) 481-6800
Enumerated
Apr 17, 2015
Record last updated
Jan 15, 2026
Fax
(916) 481-1881
Medicare enrollment
Enrolled (PECOS I20260205002175); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →

Also registered at 3315 Watt Ave

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

  1. Farikh AliAnesthesiology Physician1053871251
  2. James Allen, M.D.Anesthesiology Physician1639162100
  3. Conrad Arnold, M.D.Anesthesiology Physician1710970223
  4. Maninder Atwal, M.D.Anesthesiology Physician1578556080
  5. Jorge AvilaAnesthesiology Physician1558879452
  6. Sebastian AyalaAnesthesiology Physician1699273052

Verify William Charles Fox in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C205991    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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Bills Medicare through one group practice

  1. Central Anesthesia Service Exchange Medical Group IncSacramento, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

William Charles Fox among 7,571 anesthesiology physician records in California

William Charles Fox, MD is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 78% of them.

  • NPI issued2015 · 78% of these records are older, 20% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2013 · median 2006 among the 4,868 with a school on file
  • Record last updated2026 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

396 anesthesiology physician records list a practice address in Sacramento

They are 396 of the 33,083 NPPES records with a practice address in Sacramento, and 7,571 anesthesiology physician records in California.

All 7,571 in California → Every provider in Sacramento → Anesthesiology Physician nationwide →

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Lawrence Bercutt, M.D.Sacramento, CA 958211982604765
  2. Lai Bui, M.D.Sacramento, CA 958211073506861
  3. Robert Devoe, M.D.Sacramento, CA 958211366442147
  4. Edward Gunz, M.D.Sacramento, CA 958211508866393
  5. Dayle Imperato, M.D.Sacramento, CA 958211740280668
  6. Gary Leopold, M.D.Sacramento, CA 958211295735520
  7. James Lourim, M.D.Sacramento, CA 958211306846886
  8. Gregory Miller, M.D.Sacramento, CA 958211740280577

Common questions

What is William Charles Fox, MD's NPI number?

William Charles Fox, MD's National Provider Identifier (NPI) is 1629465638, issued on Apr 17, 2015. An NPI identifies a provider in billing; it is not a license.

Where is William Charles Fox, MD located?

The NPPES record lists a practice address at 3315 Watt Ave, Sacramento, CA, 95821. Phone: (916) 481-6800. Providers update this record themselves, so call before visiting.

How can I verify William Charles Fox, MD's license?

NPPES lists California license number C205991, 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. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.