Oswald CHI-Kin Chan, M.D.

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

A66465 Issued in CA

Practice address

680 Cohasset Rd
Chico, CA 95926-2213

Phone

(530) 342-4395

Fax

(530) 894-2325

NPI assigned

Aug 16, 2005

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

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

Family Practice

Education

Other, 1996

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

The Los Angeles Free ClinicGroup PAC ID 5395886311, 26 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

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.

• The Los Angeles Free Clinic

  • Federally Qualified Health Center (FQHC)
  • Los Angeles, CA
  • NPI 1194893248
  Medicare reassignment Care Compare group NPD
• The Los Angeles Free Clinic

  • Community/Retail Pharmacy
  • Los Angeles, CA
  • NPI 1558740852
  NPD
• Ampla Health

  • Federally Qualified Health Center (FQHC)
  • Oroville, CA
  • NPI 1952333635
  NPD (past)

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

{
    "created_epoch": "1124150400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1780676882",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "680 COHASSET RD",
            "city": "CHICO",
            "state": "CA",
            "postal_code": "959262213",
            "telephone_number": "530-342-4395",
            "fax_number": "530-894-2325"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "680 COHASSET RD",
            "city": "CHICO",
            "state": "CA",
            "postal_code": "959262213",
            "telephone_number": "530-342-4395",
            "fax_number": "530-894-2325"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHAN",
        "first_name": "OSWALD",
        "middle_name": "CHI-KIN",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-08-16",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "A66465",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Asya Marie Chalmers
• Crystal Lynn Chalmers, MS
• Tonya Lynn Cham, FNP
• Alicia Catherine Chambers
• Genavieve Chambers
• Travis Allen Chaney
• Priscilla S. Chang, M.D., PH.D.
• Yee Chang
• Ammar Changezi, MD
• Alyssa Chaplin, N.P.

• Family Medicine Physician in Chico, CA
• Providers in Chico, CA by specialty
• Family Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.