Casey M Mcmillan, MD
Casey M Mcmillan is an Internal Medicine specialist based in Columbia, SC with over 22 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Casey M Mcmillan, MD has been part of the Columbia medical community since 2007 in group practice. A Medical College of Georgia School of Medicine graduate since 2004, he brings 22+ years of experience. CMS Medicare data shows his patients commonly have hypertension, high cholesterol, and kidney disease. CMS MIPS quality score: 87.82/100 (2023).
At a glance
- Federal MIPS score higher than 58% of MIPS-scored doctors in South Carolina
- Virtual visits available — no app or travel required
Older · 275dNPPES updated 2025-08-21 · verify NPI on CMS · Verify license at South Carolina Board of Medical Examiners
How Does This Doctor Compare?
Based on Medicare data, this doctor has an average quality score compared to other doctors in South Carolina.
MIPS Score
202387.82/100
South Carolina avg: 79.5 · US avg: 83.6
✓ Higher than most doctors nationally(+4.2 pts)
Average range among MIPS-scored doctors in South CarolinaHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Opioid Rx
↓ Lower = better32.28%
South Carolina avg: 4.6 · US avg: 5.1
⚠ Lower than most doctors nationally(+27.2 pts)
32.28% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Medicare Patients
573
Unique beneficiaries
High volumePrescription Recipients
141
Patients prescribed
Prescriptions Written
285
Total claims
Total Medicare drug cost: $24k
Percentile rankings compared against 605 reporting peers in South Carolina.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Chronic Kidney Disease.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+5%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↑ More patients than average (+28%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↑ More patients than average (+9%) — a focus area for this doctor
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↑ More patients than average (+21%) — a focus area for this doctor
Conditions affecting emotional state, including depression and bipolar disorder
A mood disorder causing persistent sadness and loss of interest in activities
US avg: 31.8%↑ More patients than average (+20%) — a focus area for this doctor
The heart cannot pump blood efficiently enough to meet the body's needs
US avg: 22.5%↑ More patients than average (+25%) — a focus area for this doctor
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
Social Vulnerability Index: 0.50 / 1.00
Moderate vulnerabilityHe practices in a community where the CDC measures social vulnerability across socioeconomic status, household composition, racial/ethnic minority status, and housing/transportation factors. A higher index indicates more residents may face barriers accessing care.
Source: CDC/ATSDR Social Vulnerability Index.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2004
Medical College of Georgia at Augusta University
Board certified · Aug 20, 2025
Self-reported via NPPES
22 years in practice
Experienced
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Taxonomy: 207R00000X
Education & Training
Medical College of Georgia School of Medicine (Class of 2004)
Virtual Internal Medicine Care With Casey M Mcmillan
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Casey M Mcmillan for blood pressure monitoring, cholesterol management, kidney care follow-ups — no travel to Columbia required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Casey M Mcmillan
NPI records show Dr. Mcmillan as active with telehealth listed in Columbia, SC. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (800) 491-0909.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Physician Comparator · HRSA HPSA · CDC SVI. See Data Methodology.
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Contact Casey M Mcmillan
Practice Location
111 Doctor Cir, Columbia, SC 29203-6502
Mailing Address
111 Doctor Cir, Columbia, SC 29203-6502
This is a provider directory. Contact the office directly to schedule appointments.
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