Active NPI
Casey M McMillan, MD
- Internal Medicine Physician
- Columbia, SC
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- 26958
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 269587 | Medicaid | SC |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in SC, GA, FL
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 3
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
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
- Amedisys Home Health of Macon
- Atrium Health Navicent Rehabilitation Hospital
Merit-based Incentive Payment System (MIPS)
- Final score
- 100 of 100
- 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
| License | State | Type | Specialty |
|---|---|---|---|
| 26958 | SC | MD | Family Nurse Practitioner |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| The Regional Medical Center of Orangeburg and Calhoun Counties | Current | Accepting new patients | |
| Regional Medical Center of Orangeburg and Calhoun Counties | Current | Accepting new patients | |
| Apogee Medical Group South Carolina | Internal Medicine | Current | Accepting new patients |
| The Regional Medical Center of Orangeburg and Calhoun Counties | Current | Accepting new patients | |
| SC House Calls Inc | Current | Accepting new patients | |
| Cogent Healthcare of Georgia PC | Internal Medicine | Current | Accepting new patients |
| The Regional Medical Center of Orangeburg and Calhoun Counties | Internal Medicine | Current | Accepting new patients |
| SC House Calls Inc | Current | Accepting new patients | |
| Sound Physicians of South Carolina, LLC | Internal Medicine | Current | 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
- casey.mc.millan.1@7602.direct.athenahealth.com
- 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.
-
- Hospitalist Physician
- Aiken, SC
- NPI 1922428358
Internal Medicine
-
- Hospitalist Physician
- Orangeburg, SC
- NPI 1003889676
Internal Medicine
-
- Rehabilitation Clinic/Center
- Glenview, IL
- NPI 1346368248
-
- Neurology Physician
- Orangeburg, SC
- NPI 1144940347
-
- Oxygen Equipment & Supplies (DME)
- Columbia, SC
- NPI 1073201711
-
- Clinical Psychologist
- Orangeburg, SC
- NPI 1619387123
-
- Endocrinology, Diabetes & Metabolism Physician
- Orangeburg, SC
- NPI 1750713038
Hospital & facility affiliations 3
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- Home Health Agency
- Macon, GA
- NPI 1356399018
-
- Home Health Agency
- Macon, GA
- NPI 1972762599
-
- Rehabilitation Hospital
- Macon, GA
- NPI 1366450710
Inpatient rehabilitation facility
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 21, 2025; 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.