DR. JAMES GREGORY THOMAS MD
NPI 1114923950
Internal Medicine - Infectious Disease in Charleston, SC
About Dr. James Gregory Thomas Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAMES GREGORY THOMAS MD (NPI 1114923950) is an individual infectious disease provider in Charleston, South Carolina, licensed in South Carolina (20983) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS, is affiliated with Piedmont Medical Center, and is a graduate of Other (1990).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. James Gregory Thomas Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show James Thomas reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mt Pleasant, SC 29464
- Reassigned Medicare billing, South Carolina enrollment
Charleston, SC 29414
- Reassigned Medicare billing, South Carolina enrollment
- 13 clinicians in this Medicare group
North Charleston, SC 29406
- Reassigned Medicare billing, South Carolina enrollment
- 14 clinicians in this Medicare group
Columbia, SC 29203
- Reassigned Medicare billing, South Carolina enrollment
- 631 clinicians in this Medicare group
Johnstown, CO 80534
- Reassigned Medicare billing, South Carolina enrollment
- 70 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Piedmont Medical Center
Acute Care Hospitals · Rock Hill, SCMusc Medical Center
Acute Care Hospitals · Charleston, SCTrident Medical Center
Acute Care Hospitals · Charleston, SCMount Pleasant Hospital
Acute Care Hospitals · Mount Pleasant, SCRoper St Francis Hospital-Berkeley Inc
Acute Care Hospitals · Summerville, SCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 29401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHARLESTON, SC 29401
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is James Thomas's NPI number?
The NPI number for James Thomas is 1114923950. It was assigned to this individual provider in the NPPES registry on June 27, 2005.
Where is James Thomas located?
James Thomas practices at 316 Calhoun St, Charleston, SC 29401. The listed phone number is (843) 724-2450.
What is James Thomas's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is James Thomas enrolled in Medicare?
Yes. James Thomas is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for James Thomas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Thomas reassigns Medicare benefits to 5 organizations: Carolina Independent Id, LLC (Mt Pleasant, SC), Lowcountry Infectious Diseases PA (Charleston, SC), Pinnacle Physicians, LLC (North Charleston, SC), Sc House Calls Inc (Columbia, SC) and Vibra Physicians LLC (Johnstown, CO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for James Thomas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does James Thomas accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, BlueCross BlueShield of South Carolina and UnitedHealthcare list James Thomas as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is James Thomas affiliated with any hospitals?
According to CMS data, James Thomas is affiliated with Piedmont Medical Center, Musc Medical Center, Trident Medical Center, Mount Pleasant Hospital and Roper St Francis Hospital-Berkeley Inc.
When was this NPI record last updated?
The NPPES record for James Thomas was last updated on May 27, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.