Doctor profile · Federal record
Dr. Casey McMillan, MD
Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Pediatrics Physician · Columbia, SC
- NPI 1861526790
- Accepts Medicare
- MIPS 78.9 / 100 · 2023
- 22 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
111 Doctor Cir
Columbia, SC 292036502
(800) 491-0909 - Additional location
-
1301 Plantation Island Dr S
St Augustine, FL 320803108
Credentials & registration
- NPI registered
- March 2007 — 19 yrs on file
- Profile last updated
- August 21, 2025
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (2)
- South Carolina #26958 · Georgia #89586
- Medicaid
- SC #269587
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1861526790. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
11,206
Distinct HCPCS
10
Medicare allowed
$832,454
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99489 |
Complex chronic care management services for two or more chronic conditions, each additional 60 minutes of clinical staff time directed by health care professional, per calendar month | 8,091 | 395 | $65 | |
99487 |
Complex chronic care management services for two or more chronic conditions, first 60 minutes of clinical staff time directed by health care professional, per calendar month | 1,475 | 397 | $122 | |
99349 |
Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes | 547 | 354 | $121 | |
99439 |
Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | 368 | 162 | $44 | |
99490 |
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 321 | 204 | $59 | |
G0180 |
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | 165 | 160 | $49 | |
G0179 |
Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a | 144 | 108 | $38 | |
99348 |
Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes | 41 | 37 | $72 | |
G0181 |
Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow | 41 | 18 | $98 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 13 | 12 | $93 |
In context: peer comparison
Among 57 peers in Columbia Internal Medicine Physician, average services per provider: 697. This provider delivers 16× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
88
Patients
43
Total drug cost
$8,692
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 52 | 27 | $1,506 |
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 25 | 16 | $7,043 |
| Oxycodone Hcl | Generic | 11 | 0 | $142 |
Frequently asked questions
What is Dr. Casey McMillan's medical specialty?
Dr. Casey McMillan practices Internal Medicine Physician in Columbia, SC.
Where does Dr. Casey McMillan practice?
Dr. Casey McMillan practices at 111 Doctor Cir, Columbia, SC 292036502. Office phone: 8004910909.
What is Dr. Casey McMillan's NPI?
Dr. Casey McMillan's National Provider Identifier (NPI) is 1861526790, issued by NPPES.
Does Dr. Casey McMillan accept Medicare assignment?
Yes. Dr. Casey McMillan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Casey McMillan commonly perform?
Top Medicare-reported procedures in 2023: Complex chronic care management services for two or more chronic conditions (HCPCS 99489); Complex chronic care management services for two or more chronic conditions (HCPCS 99487); Residence visit for established patient with moderate level of medical decision making (HCPCS 99349). Source: CMS Medicare Physician & Other Practitioners file.