Thomas Nelson Mundorff, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

G25438 Issued in CA

Practice address

2721 Olive Hwy
Ste 12
Oroville, CA 95966

Phone

(530) 533-6061

Fax

(530) 533-4438

NPI assigned

Apr 14, 2006

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

Other identifiers 2

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Merit-based Incentive Payment System (MIPS)

Final score

77.23 of 100Reported as group

Quality

36.36

Promoting interoperability

100

Improvement activities

40

Cost

71.06

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Oroville Hospital

  • General Acute Care Hospital
  • Oroville, CA
  • NPI 1710372909
  NPD (past)
• Oroville Hospital

  • Clinic/Center
  • Oroville, CA
  • NPI 1780788018
  NPD (past)

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

{
    "created_epoch": "1144972800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788652800000",
    "number": "1154385383",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2721 OLIVE HWY",
            "address_2": "STE 12",
            "city": "OROVILLE",
            "state": "CA",
            "postal_code": "95966",
            "telephone_number": "530-533-6061",
            "fax_number": "530-533-4438"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2721 OLIVE HWY",
            "address_2": "STE 12",
            "city": "OROVILLE",
            "state": "CA",
            "postal_code": "95966",
            "telephone_number": "530-533-6061",
            "fax_number": "530-533-4438"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MUNDORFF",
        "first_name": "THOMAS",
        "middle_name": "NELSON",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-14",
        "last_updated": "2026-09-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "G25438",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "STATE LICENSE",
            "identifier": "G25438",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "GR0014101",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Suzanne Morris, MD
• Misti Lin Morrow Mosley, AA
• Toupou Mike Moua
• Karin Elizabeth Mullen
• Khurram Mumtaz, M.D.
• Amber Marie Murray, CMT
• Rebecca S. Muser, RN
• Cecilia Chama Nagel, PHARMD
• Ravi Nagubandi, MD
• Naveen Nar

• Internal Medicine Physician in Oroville, CA
• Providers in Oroville, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 6, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• 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.