William Charles Fox, MD

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

C205991 Issued in CA

Practice address

3315 Watt Ave
Sacramento, CA 95821-3600

Phone

(916) 481-6800

Fax

(916) 481-1881

NPI assigned

Apr 17, 2015

Sex

Male

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Anesthesiology

Education

Other, 2013

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Central Anesthesia Service Exchange Medical Group IncGroup PAC ID 9638082530, 106 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Sutter Roseville Medical Center Hospital, Roseville, CA, CCN 050309

Merit-based Incentive Payment System (MIPS)

Final score

81.55 of 100Reported as group

Quality

73.89

Promoting interoperability

93

Improvement activities

40

Cost

70.44

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Central Anesthesia Service Exchange Medical Group, Inc.

  • Anesthesiology Physician
  • Sacramento, CA
  • NPI 1194826404

  Single Specialty

  Medicare reassignment Care Compare group NPD
• Sacsolano Anesthesia Exchange Medical Group, Inc

  • Anesthesiology Physician
  • Sacramento, CA
  • NPI 1720401284

  Single Specialty

  NPD (past)
• Mason City Ambulatory Surgery Center, LLC

  • Ambulatory Surgical Clinic/Center
  • Mason City, IA
  • NPI 1902841398
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Sutter Valley Hospitals

  • General Acute Care Hospital
  • Roseville, CA
  • NPI 1356390264
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1429228800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768435200000",
    "number": "1629465638",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3315 WATT AVE",
            "city": "SACRAMENTO",
            "state": "CA",
            "postal_code": "958213600",
            "telephone_number": "916-481-6800",
            "fax_number": "916-481-1881"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3315 WATT AVE",
            "city": "SACRAMENTO",
            "state": "CA",
            "postal_code": "958213600",
            "telephone_number": "916-481-6800",
            "fax_number": "916-481-1881"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FOX",
        "first_name": "WILLIAM",
        "middle_name": "CHARLES",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2015-04-17",
        "last_updated": "2026-01-15",
        "certification_date": "2026-01-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Anesthesiology",
            "state": "CA",
            "license": "C205991",
            "primary": true
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "HI",
            "license": "MD-22875",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Megan B Fox
• Pamela M Fox
• Richard Alan Fox, NP
• Stephen Michael Fox, LMFT
• Tricia W. Fox, MD
• Andria Foydl
• Oretha Foyoh
• Chad Jordan Fraga
• Daniel Fraga
• Olivia Darline Fraga

• Anesthesiology Physician in Sacramento, CA
• Providers in Sacramento, CA by specialty
• Anesthesiology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 15, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.