Individual provider Active NPI

Casey M McMillan, MD

  • Internal Medicine Physician
  • Columbia, SC
National Provider Identifier
1861526790
Registry record updated Aug 21, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
26958 Issued in SC
Practice address
111 Doctor Cir
Columbia, SC 29203-6502
Phone
(800) 491-0909
NPI assigned
Mar 15, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 21, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 89586 GA
Pediatrics Physician 208000000X 26958 SC
Internal Medicine Physician 207R00000X 26958 SC Primary

Addresses

Primary practice location

111 Doctor Cir
Columbia, SC 29203-6502

Mailing address

111 Doctor Cir
Columbia, SC 29203-6502
Phone (800) 491-0909

Other practice location 1

1301 Plantation Island Dr S
St Augustine, FL 32080-3108
Phone (800) 491-0909

Other identifiers 1

IdentifierTypeStateIssuer
269587MedicaidSC

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in SC, GA, FL3 enrollments
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 3

Enrollment IDStateProvider typePAC IDDetails
I20090115000192 SC Practitioner - Internal MedicinePractitioner - Hospitalist 5698838738 Reassigns benefits to 5 organizations
I20221229002034 GA Practitioner - Internal Medicine 5698838738 Reassigns benefits to 2 organizations
I20250924001585 FL Practitioner - Internal Medicine 5698838738

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Medical College of Georgia School of Medicine, 2004
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
SC House Calls IncGroup PAC ID 6800994807, 445 clinicians
Select Rehabilitation, LLCGroup PAC ID 9032020490, 1,935 clinicians

Practice addresses (Care Compare)

1053 Ctr St
West Columbia, SC 29169-6749
Phone (800) 491-0909

1400 Main St
Conway, SC 29526-3567
Phone (843) 488-0101

1614 Main St
Suite C
Columbia, SC 29201-2860
Phone (803) 451-6133

2600 Compass Rd
Glenview, IL 60026-8001

3612 Mitchell St
Loris, SC 29569-2828
Phone (843) 756-2122

872 Singleton Ridge Rd
Conway, SC 29526-1101
Phone (800) 491-0909

Hospital & facility affiliations

  • Enhabit Home Health Home health agency, Macon, GA, CCN 117152
  • Amedisys Home Health of Macon Home health agency, Macon, GA, CCN 117093
  • Atrium Health Navicent Rehabilitation Hospital Inpatient rehabilitation facility, Macon, GA, CCN 113029

Merit-based Incentive Payment System (MIPS)

Final score
100 of 100Reported as individual
Quality
92.03
Promoting interoperability
94
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
26958SCMDFamily Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
The Regional Medical Center of Orangeburg and Calhoun Counties CurrentSince Oct 24, 2018 Accepting new patients
Regional Medical Center of Orangeburg and Calhoun Counties CurrentSince Oct 24, 2018 Accepting new patients
Apogee Medical Group South Carolina Internal Medicine CurrentSince Jul 28, 2018 Accepting new patients
The Regional Medical Center of Orangeburg and Calhoun Counties Current Accepting new patients
SC House Calls Inc CurrentSince Nov 29, 2022 Accepting new patients
Cogent Healthcare of Georgia PC Internal Medicine CurrentSince Dec 22, 2018 Accepting new patients
The Regional Medical Center of Orangeburg and Calhoun Counties Internal Medicine Current Accepting new patients
SC House Calls Inc CurrentSince Nov 29, 2022 Accepting new patients
Sound Physicians of South Carolina, LLC Internal Medicine CurrentSince Dec 22, 2018 Accepting new patients

Locations

1109 Medical Center Dr
Ste 2A
Augusta, GA 30909
Phone (706) 901-4242

302 University Pkwy
Aiken, SC 29801
Phone (803) 279-3940

111 Doctor Cir
Columbia, SC 29203
Phone (803) 730-8910

1624 Main St
Columbia, SC 29201
Phone (803) 454-0365

1614 Main St
Ste C
Columbia, SC 29201
Phone (803) 451-6133

2435 Forest Dr
Columbia, SC 29204
Phone (770) 874-6859

1137 Cook Rd
Orangeburg, SC 29118
Phone (803) 395-2579

3000 Saint Matthews Rd
Orangeburg, SC 29118
Phone (803) 395-2200

1053 Center St
West Columbia, SC 29169
Phone (803) 454-0365

Interoperability endpoints

  • Direct secure messaging: casey.mc.millan.1@7602.direct.athenahealth.com
  • FHIR API: https://fhir-myrecord.cerner.com/r4/0fba742b-eec1-4103-87e5-edbdf1fe1e30/

Organizations & group practices 10

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.

Hospital & facility affiliations 3

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

NPI Registry JSON

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

{
    "created_epoch": "1173916800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755734400000",
    "number": "1861526790",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "111 DOCTOR CIR",
            "city": "COLUMBIA",
            "state": "SC",
            "postal_code": "292036502",
            "telephone_number": "800-491-0909"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "111 DOCTOR CIR",
            "city": "COLUMBIA",
            "state": "SC",
            "postal_code": "292036502",
            "telephone_number": "800-491-0909"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1301 Plantation Island Dr S",
            "address_purpose": "LOCATION",
            "city": "St Augustine",
            "state": "FL",
            "postal_code": "320803108",
            "country_code": "US",
            "telephone_number": "800-491-0909",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MCMILLAN",
        "first_name": "CASEY",
        "middle_name": "M",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-03-15",
        "last_updated": "2025-08-21",
        "certification_date": "2025-08-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "GA",
            "license": "89586",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "SC",
            "license": "26958",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "SC",
            "license": "26958",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "269587",
            "state": "SC"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Columbia, SC

Sources for this page

Verify at the official NPI Registry.