Gregory A Derfus, MD

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

28466 Issued in WI

Practice address

1400 Bellinger St
Eau Claire, WI 54703-5222

Phone

(715) 838-5222

NPI assigned

Feb 7, 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

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Merit-based Incentive Payment System (MIPS)

Final score

92.03 of 100Reported as group

Quality

94.88

Promoting interoperability

100

Improvement activities

40

Cost

74.4

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1139270400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1707436800000",
    "number": "1861465304",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 1510",
            "city": "EAU CLAIRE",
            "state": "WI",
            "postal_code": "547021510",
            "telephone_number": "715-838-5222"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1400 BELLINGER ST",
            "city": "EAU CLAIRE",
            "state": "WI",
            "postal_code": "547035222",
            "telephone_number": "715-838-5222"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DERFUS",
        "first_name": "GREGORY",
        "middle_name": "A",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-07",
        "last_updated": "2024-02-09",
        "certification_date": "2024-02-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "WI",
            "license": "28466",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ashley L Demars, LPC
• James R Deming, MD
• Michael J Deminsky, LCSW MFT
• David G Dennison, M.D.
• Jill Depke, NP
• Rachel Derusha, APNP
• Jonathan Dervetski
• Kiel Steven Desjarlais
• Kyle James Dettbarn, MD
• Brandon R. Devine, D.C.

• Gastroenterology Physician in Eau Claire, WI
• Providers in Eau Claire, WI by specialty
• Gastroenterology Physician in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 9, 2024; 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.