William Caswell Arnold, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

51794 Issued in KY

Practice address

476 Liberty Rd
West Liberty, KY 41472-2049

Phone

(606) 743-3186

NPI assigned

Apr 15, 2014

Last updated

Jul 30, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 4

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in KY

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

Internal MedicineAlso: Sleep Medicine

Education

University of Kentucky College of Medicine, 2014

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Southeastern Emergency Physicians LLCGroup PAC ID 2466364997, 776 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• CHI Saint Joseph Berea NF Hospital, Berea, KY, CCN 181329
• Georgetown Community Hospital Hospital, Georgetown, KY, CCN 180101
• Saint Joseph East Hospital, Lexington, KY, CCN 180143

Merit-based Incentive Payment System (MIPS)

Final score

96.26 of 100Reported as group

Quality

83.59

Improvement activities

40

Cost

90.93

Medicare enrollment (NPD)

Not enrolled

HHS exclusion list flag

CMS’s directory marks this NPI as on an HHS exclusion list; no matching OIG record was found. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Sleepwell LLC

  • Internal Medicine Physician
  • Lexington, KY
  • NPI 1851061667

  Multi-Specialty

  Medicare reassignment NPD Authorized official
• Southeastern Emergency Physicians LLC

  • Emergency Medicine Physician
  • Maysville, KY
  • NPI 1356379382

  Multi-Specialty

  Medicare reassignment Care Compare group NPD
• Green Valley Emergency Physicians, LLC

  • Emergency Medicine Physician
  • Paducah, KY
  • NPI 1720755739

  Multi-Specialty

  Medicare reassignment NPD
• Kentucky Post-Acute Medical Services 1 PSC

  • Behavioral Neurology & Neuropsychiatry Physician
  • Flemingsburg, KY
  • NPI 1831628783

  Multi-Specialty

  Medicare reassignment NPD
• Southern Medical Partners, LLC

  • Emergency Medicine Physician
  • Hazard, KY
  • NPI 1538109962

  Multi-Specialty

  Medicare reassignment NPD
• Southeastern Physician Services PC

  • Hospitalist Physician
  • Oak Ridge, TN
  • NPI 1083835441

  KY, Multi-Specialty

  Medicare reassignment NPD
• Appalachian Regional Healthcare, Inc.

  • Clinical Pathology/Laboratory Medicine Physician
  • Whitesburg, KY
  • NPI 1417045998
  Medicare reassignment
• Appalachian Regional Healthcare, Inc

  dba ARH Tri-Cities Clinic Pharmacy

  • Community/Retail Pharmacy
  • Cumberland, KY
  • NPI 1710870811
  NPD
• Appalachian Regional Healthcare, Inc

  dba Hazard ARH Regional Medical Center

  • Anatomic Pathology & Clinical Pathology Physician
  • Hazard, KY
  • NPI 1780728881

  Multi-Specialty

  NPD
• Appalachian Regional Healthcare, Inc.

  dba ARH Morgan County Clinic

  • Anatomic Pathology & Clinical Pathology Physician
  • West Liberty, KY
  • NPI 1962520312

  Multi-Specialty

  NPD

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

• Georgetown Community Hospital LLC

  dba Gerogetown Community Hospital

  • Rural Acute Care Hospital
  • Georgetown, KY
  • NPI 1326107319
  Care Compare affiliation
• Saint Joseph Health System, Inc

  dba CHI Saint Joseph Hospital

  • General Acute Care Hospital
  • Lexington, KY
  • NPI 1437150984
  Care Compare affiliation
• Saint Joseph Health System, Inc

  dba CHI Saint Joseph East

  • General Acute Care Hospital
  • Lexington, KY
  • NPI 1447457775
  Care Compare affiliation
• Saint Joseph Health System, Inc

  dba CHI Saint Joseph Berea

  • Critical Access Hospital
  • Berea, KY
  • NPI 1740488386
  Care Compare affiliation

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

{
    "created_epoch": "1397520000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785369600000",
    "number": "1720407018",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "476 LIBERTY RD",
            "city": "WEST LIBERTY",
            "state": "KY",
            "postal_code": "414722049",
            "telephone_number": "606-743-3186",
            "fax_number": "606-743-9604"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "476 LIBERTY RD",
            "city": "WEST LIBERTY",
            "state": "KY",
            "postal_code": "414722049",
            "telephone_number": "606-743-3186"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1084 Highway 7 Ste 2",
            "address_purpose": "LOCATION",
            "city": "West Liberty",
            "state": "KY",
            "postal_code": "414727146",
            "country_code": "US",
            "telephone_number": "606-743-3065",
            "fax_number": "606-743-3066",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "186 Brenna Blvd",
            "address_purpose": "LOCATION",
            "city": "Salyersville",
            "state": "KY",
            "postal_code": "414657524",
            "country_code": "US",
            "telephone_number": "606-349-3800",
            "fax_number": "606-263-5619",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ARNOLD",
        "first_name": "WILLIAM",
        "middle_name": "CASWELL",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2014-04-15",
        "last_updated": "2026-07-30",
        "certification_date": "2026-07-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "KY",
            "license": "51794",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "KY",
            "license": "51794",
            "primary": true
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "KY",
            "license": "51794",
            "primary": false
        },
        {
            "code": "207RS0012X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Sleep Medicine",
            "state": "KY",
            "license": "51794",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "warnold00@arh.medalliesdirect.net",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Standard Direct Functionality",
            "address_1": "476 Liberty Rd",
            "city": "West Liberty",
            "state": "KY",
            "country_code": "US",
            "postal_code": "414722049",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Appalachian Regional Healthcare, Inc.
• Appalachian Regional Healthcare, Inc. (Morgan County ARH Family Health)
• Appalachian Regional Healthcare, Inc. (ARH Morgan County Clinic)
• Appalachian Regional Healthcare, Inc. (ARH Morgan County Clinic)
• James Toby Arnold, D.O.
• Jana Renee Back, PHARMD
• Jeffrey Scott Bailey, DMD
• Justin Barber
• Stephanie Barker
• Sheila Ann Bolin

• Internal Medicine Physician in West Liberty, KY
• Providers in West Liberty, KY by specialty
• Internal Medicine Physician in Kentucky

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 30, 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.