DR. WILLIAM W THOMS MD
NPI 1215087309
Radiology - Radiation Oncology in Cartersville, GA
About Dr. William W Thoms Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM W THOMS MD (NPI 1215087309) is an individual radiation oncology provider in Cartersville, Georgia, licensed in Georgia (35343) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Wellstar Kennestone Regional Medical Center, and maintains a secondary practice location in Hiram.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
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. William W Thoms 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
2Medicare enrollment records show William Thoms reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cartersville, GA 30120
- Reassigned Medicare billing, Georgia enrollment
- 3,885 clinicians in this Medicare group
Calhoun, GA 30701
- Reassigned Medicare billing, Georgia enrollment
- 384 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
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Wellstar Kennestone Regional Medical Center
Acute Care Hospitals · Marietta, GAWellstar Cobb Medical Center
Acute Care Hospitals · Austell, GAWellstar North Fulton Hospital
Acute Care Hospitals · Roswell, GAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 30121 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.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CARTERSVILLE, GA 30121
CARTERSVILLE, GA 30121
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 William Thoms's NPI number?
The NPI number for William Thoms is 1215087309. It was assigned to this individual provider in the NPPES registry on January 11, 2007.
Where is William Thoms located?
William Thoms practices at 100 Market Place Blvd Ste 102, Cartersville, GA 30121. The listed phone number is (678) 721-5555.
What is William Thoms's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is William Thoms enrolled in Medicare?
Yes. William Thoms 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 William Thoms's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Thoms reassigns Medicare benefits to 2 organizations: Wellstar Medical Group, LLC (Cartersville, GA) and Adventist Health System Georgia Inc (Calhoun, GA). 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 William Thoms's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Thoms accept?
Health plans from Alliant Health Plans, Inc. list William Thoms 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 William Thoms affiliated with any hospitals?
According to CMS data, William Thoms is affiliated with Wellstar Kennestone Regional Medical Center, Wellstar Cobb Medical Center and Wellstar North Fulton Hospital.
When was this NPI record last updated?
The NPPES record for William Thoms was last updated on September 27, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Dr. William W Thoms, MD · NPI 1215087309
Radiation Oncology physician in Cartersville, Georgia. Individual provider, active in the CMS NPPES registry since January 11, 2007.
## Identity
- **NPI:** 1215087309 (Entity type: Individual)
- **Enumerated:** January 11, 2007
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **State license:** 35343 (Georgia)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 MARKET PLACE BLVD STE 102, Cartersville, GA 30121-8715
- **Phone:** (678) 721-5555 · **Fax:** (678) 721-5556
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Wellstar Medical Group, LLC (NPI 1508298142, Cartersville, GA); Adventist Health System Georgia Inc (NPI 1699791343, Calhoun, GA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Temple University School Of Medicine, class of 1985
## Record status
- **NPPES last updated:** September 27, 2019
- **Other identifiers:** Medicaid 00485647C (GA)
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Source: [NPI Profile](https://npiprofile.com/npi/1215087309) · Data from the CMS NPPES public registry.