William Aiken Chafin, M.D.
Rheumatology Physician · Gainesville, GA
William Aiken Chafin, M.D. is a rheumatology physician with a practice address in Gainesville, Georgia, and NPI 1225122716, issued on Oct 2, 2006. Check the license (Georgia 67542, as entered in NPPES) on the Georgia Composite Medical Board; the Medicare figures below come from public CMS files.
- Name
- William Aiken Chafin
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 67542 GA
Self-reported in NPPES; status is on the state search - Practice location
- 700 S Enota Dr NE, Gainesville, GA 30501
- Phone
- (770) 531-3711
- Enumerated
- Oct 2, 2006
- Record last updated
- Jul 14, 2025
- Fax
- (706) 410-9276
- Medicare enrollment
- Enrolled (PECOS I20120725000415); accepts Medicare assignment
- Medical or professional school
- Medical College Of Georgia School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 196 in Georgia → Look up another NPI →
Also registered at 700 S Enota Dr NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marta Bognar, M.D.Rheumatology Physician1336102425
- Emma Brown, PAPhysician Assistant1457173999
- Stephen Elmore, MDRheumatology Physician1467891564
- Brent Flickinger, MDRheumatology Physician1902914872
- Audrey Gibson, PA-CMedical Physician Assistant1053346296
- Carrie Phillips, PA-CPhysician Assistant1104075415
Verify William Aiken Chafin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersGeorgia Composite Medical Board
Search for license 67542Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.3 times the Medicare Part D claims of the average rheumatology physician in 2024
6,446 Medicare Part D claims for 868 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 274 claims were for opioids.
Most prescribed
- Hydroxychloroquine Sulfate1,232 claims
- Methotrexate1,185 claims
- Prednisone939 claims
- Enbrel Sureclick354 claims
- Humira(Cf) Pen185 claims
- Orencia Clickject174 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 96.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $4,616.42
211 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Southeastern Rheumatology AllianceGainesville, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Aiken Chafin among 196 rheumatology physician records in Georgia
William Aiken Chafin, M.D. is one of 196 rheumatology physician records with a practice address in Georgia. 84% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 59% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2004 · median 2005 among the 151 with a school on file
- Record last updated2025 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Georgia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Georgia
There are 196 rheumatology physician records in Georgia.
All 196 in Georgia → Every provider in Gainesville → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Marta Bognar, M.D.Gainesville, GA 305011336102425
- Sylvia Dold, DOGainesville, GA 305011326088873
- Stephen Elmore, MDGainesville, GA 305011467891564
- Brent Flickinger, MDGainesville, GA 305011902914872
- Yashswee Kc, MDGainesville, GA 305011093202343
- Tracy Lovell, M.D.Gainesville, GA 305011821066952
- Alok Sachdeva, M.D.Gainesville, GA 305011750504262
- Huma Sohail, MDGainesville, GA 305011053527275
Common questions
What is William Aiken Chafin, M.D.'s NPI number?
William Aiken Chafin, M.D.'s National Provider Identifier (NPI) is 1225122716, issued on Oct 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Aiken Chafin, M.D. located?
The NPPES record lists a practice address at 700 S Enota Dr NE, Gainesville, GA, 30501. Phone: (770) 531-3711. Providers update this record themselves, so call before visiting.
How can I verify William Aiken Chafin, M.D.'s license?
NPPES lists Georgia license number 67542, as entered by the provider. Search the Georgia Composite Medical Board at https://medicalboard.georgia.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Aiken Chafin, M.D. prescribe under Medicare Part D?
In 2024, William Aiken Chafin, M.D. had 6,446 Medicare Part D claims for 868 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is William Aiken Chafin, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.