William A. Collins, MD
Radiation Oncology Physician · Sumter, SC
William A. Collins, MD is a radiation oncology physician with a practice address in Sumter, South Carolina, and NPI 1851365605, issued on Feb 16, 2006. Check the license (South Carolina 16225, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William A. Collins
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 16225 SC
Self-reported in NPPES; status is on the state search - Practice location
- 130 N Washington St, Sumter, SC 29150
- Phone
- (803) 774-8888
- Enumerated
- Feb 16, 2006
- Record last updated
- Feb 18, 2022
- Fax
- (803) 778-6376
- Medicaid IDs
- 162255 SC
GP1242 SC - Medicare enrollment
- Enrolled (PECOS I20100708000178); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 1990
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 80 in South Carolina → Look up another NPI →
Also registered at 130 N Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Harvey Balfour, MDRadiation Oncology Physician1760473185
- Larry Grubb, MDRadiation Oncology Physician1013947589
- Laurie Harrell, MDRadiation Oncology Physician1881863389
Verify William A. Collins in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 16225Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Prisma Health University Medical GroupSumter, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William A. Collins among 80 radiation oncology physician records in South Carolina
William A. Collins, MD is one of 80 radiation oncology physician records with a practice address in South Carolina. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 46% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated1990 · median 2003 among the 62 with a school on file
- Record last updated2022 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in South Carolina
There are 80 radiation oncology physician records in South Carolina.
All 80 in South Carolina → Every provider in Sumter → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Harvey Balfour, MDSumter, SC 291501760473185
- Edward Duffy, MDSumter, SC 291501568516383
- Larry Grubb, MDSumter, SC 291501013947589
- Laurie Harrell, MDSumter, SC 291501881863389
- Quillin Davis, MDWest Columbia, SC 291691770621989
- Joshua Lawson, MDWest Columbia, SC 291691972788479
- Ashley Schlafstein, MDWest Columbia, SC 291691104314939
- Hugh Merriman, M.D.Orangeburg, SC 291181942277058
Common questions
What is William A. Collins, MD's NPI number?
William A. Collins, MD's National Provider Identifier (NPI) is 1851365605, issued on Feb 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William A. Collins, MD located?
The NPPES record lists a practice address at 130 N Washington St, Sumter, SC, 29150. Phone: (803) 774-8888. Providers update this record themselves, so call before visiting.
How can I verify William A. Collins, MD's license?
NPPES lists South Carolina license number 16225, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.