Dr. James R. Cain III, MD

Dr. Cain practices at Sumter Medical Specialists PA in Sumter, South Carolina.

Dr. Cain's NPI, 1174615868, was assigned on September 29, 2006. Dr. Cain graduated from Medical University of South Carolina College of Medicine in 1976. Dr. Cain holds South Carolina license 08460.

Dr. Cain's primary practice is Sumter Medical Specialists PA, at 635 W Wesmark Blvd, Sumter, SC 29150 in Sumter County. The practice phone is (803) 469-7500.

Dr. Cain's primary practice is Sumter Medical Specialists PA in Sumter, South Carolina. Dr. Cain is also affiliated with Prisma Health Tuomey Hospital. The medical group on file is MUSC Community Physicians. Dmand AI also links Dr. Cain to 2 more hospitals, 2 dialysis centers, 2 group practices and clinics and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Cain practices, 7 sites in all. Vendor and product names are available with a free account.

Nephrology is Dr. Cain's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Cain is board certified in internal medicine by the American Board of Internal Medicine. Dr. Cain is licensed in South Carolina.

CMS data shows 2,399 Medicare services from Dr. Cain across 32 procedure codes in 2024, for 253 Medicare patients. Medicare paid $114,733 for them.

CMS counts 253 Medicare patients who saw Dr. Cain in 2024. The largest group is 65 to 74, with 85 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 28% are also on Medicaid. Their average risk score is 5.48, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Cain's median patient age at 70, with 53% women.

In 2024, Dr. Cain wrote 2,739 Medicare Part D claims for 254 patients. 76% of them were for generic drugs. CMS names the drug for 2,357 of them, across 51 drugs with 11 or more claims each, at $554,772 in total drug cost. In 2023, CMS named 2,592 claims across 58 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 23 out of 100 for Dr. Cain for performance year 2024, reported individually. Dr. Cain accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

CMS Open Payments shows 283 general payments to Dr. Cain from 43 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Amgen Inc. paid the most, $759.

Dr. Cain graduated from Medical University of South Carolina College of Medicine in 1976.