Dr. William Aiken Chafin III, MD
- Medicare services, 2024
- 495,531
- Medicare patients, 2024
- 685
- Part D claims, 2024
- 6,446
- MIPS score, 2024
- 89
- Hospital affiliations
- 3
- Practice address
- 1199 Prince Avenue, Athens, GA 30606
- Practice phone
- Call (706) 475-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chafin's professional email, personal email and mobile number
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Dr. William Aiken Chafin III is a rheumatologist in Athens, Georgia
Dr. Chafin practices at Piedmont Athens Regional in Athens, Georgia, part of Piedmont Healthcare.
Dr. Chafin's NPI, 1225122716, was assigned on October 2, 2006. Dr. Chafin graduated from Medical College of Georgia School of Medicine in 2004. Dr. Chafin holds Georgia license 67542.
- NPI
- 1225122716NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921151077
- NPI enumeration date
- October 2, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (706) 475-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Aiken Chafin III practices at Piedmont Athens Regional in Athens, Georgia
Dr. Chafin's primary practice is Piedmont Athens Regional, at 1199 Prince Avenue, Athens, GA 30606 in Clarke County. The practice phone is (706) 475-7000.
- Piedmont Athens Regional1199 Prince Avenue, Athens, GA 30606 · Clarke CountyPhone(706) 475-7000
Source: Dmand AI Affiliation Data
Dr. William Aiken Chafin III is affiliated with 5 sites of care and 1 medical group
Dr. Chafin's primary practice is Piedmont Athens Regional in Athens, Georgia, part of Piedmont Healthcare. Dr. Chafin is also affiliated with St. Mary's Hospital. The medical group on file is Arthritis Center of North Georgia. Dmand AI also links Dr. Chafin to 1 more hospital, 1 physician office and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Aiken Chafin III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chafin practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Piedmont Athens Regional | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Aiken Chafin III is one of 172 rheumatologists in Georgia
Rheumatology is Dr. Chafin's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Chafin is licensed in Georgia.
Specialties and state licenses
- Rheumatology, GeorgiaPrimary
Rheumatologists near Dr. Chafin
Counts of rheumatologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William Aiken Chafin III billed Medicare for 495,531 services in 2024
CMS data shows 495,531 Medicare services from Dr. Chafin across 47 procedure codes in 2024, for 685 Medicare patients. Medicare paid $3,602,739 for them. Every service was in an office.
Dr. Chafin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 428,9682024: 487,20514%
- Tests and treatments
- 2023: 2,4332024: 2,77914%
- Lab and pathology
- 2023: 4,2662024: 2,24847%
- Office and hospital visits
- 2023: 1,2692024: 1,3728%
- Surgery
- 2023: 8982024: 9789%
- Other services
- 2023: 342024: 5011374%
- Imaging
- 2023: 3482024: 44829%
Dr. Chafin compared with the Georgia median for rheumatologists, 2024
- Dr. Chafin
- Georgia median
- Medicare services
- 495,531vs 1,167424.6 times
- Medicare patients
- 685vs 2143.2 times
- Part D claims
- 6,223vs 1,2654.9 times
Medians across 169 rheumatologists in Georgia with Dmand AI profiles that report each measure.
Dr. Chafin's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Aiken Chafin III treated 685 Medicare patients in 2024, average age 74
CMS counts 685 Medicare patients who saw Dr. Chafin in 2024. The largest group is 65 to 74, with 317 patients. 75% of them have arthritis, and 75% have high blood pressure. 5% are also on Medicaid. Their average risk score is 1.37, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chafin's median patient age at 69, with 78% women.
Dr. Chafin's Medicare patients by age, 2024
Dr. Chafin's Medicare patients by sex, 2024
- Women49472%
- Men19128%
Chronic conditions among Dr. Chafin's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Anxiety30%
- Osteoporosis30%
- Mood disorders27%
- Depression25%
- Ischemic heart disease25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chafin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women78%
- Men22%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Aiken Chafin III wrote 6,446 Medicare Part D claims in 2024
In 2024, Dr. Chafin wrote 6,446 Medicare Part D claims for 868 patients. 82% of them were for generic drugs. CMS names the drug for 6,223 of them, across 52 drugs with 11 or more claims each, at $8,659,999 in total drug cost. In 2023, CMS named 5,485 claims across 47 drugs.
Dr. Chafin's Part D claims by kind of drug, 2024
- Generic5,258 claims82%
- Brand-name and other1,188 claims18%
Dr. Chafin's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Chafin's Part D claims, 2024
- Opioids4%274 of 6,446 claims
- Antibiotics1%36 of 6,446 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5,4852024: 6,22313%
Drugs named by CMS: 52 in 2024, 47 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. William Aiken Chafin III scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Chafin for performance year 2024, reported individually. Dr. Chafin accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Chafin's MIPS scores, performance year 2024
- 89of 100Final score
- 78.6of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. William Aiken Chafin III received $39,331 in industry payments from 2016 to 2025
CMS Open Payments shows 1,686 general payments to Dr. Chafin from 37 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 66% of the total. Abbvie Inc. paid the most, $11,995.
General payments to Dr. Chafin by program year, 2016 to 2025
General payments to Dr. Chafin by kind, 2016 to 2025
- Food and beverage$25,90766%
- Speaker and faculty fees$12,50032%
- Consulting fees$8502%
- Education$740%
Companies that paid Dr. Chafin the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Aiken Chafin III graduated from Medical College of Georgia School of Medicine
Dr. Chafin graduated from Medical College of Georgia School of Medicine in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Aiken Chafin III's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William Aiken Chafin III
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William Aiken Chafin III's NPI number?
Dr. William Aiken Chafin III's NPI number is 1225122716. It was assigned on October 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Aiken Chafin III?
Dr. William Aiken Chafin III is a rheumatologist in Athens, Georgia. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. William Aiken Chafin III practice?
Dr. Chafin practices at 1199 Prince Avenue, Athens, GA 30606. Dr. Chafin's primary practice is Piedmont Athens Regional in Athens, Georgia, part of Piedmont Healthcare. Dmand AI also links Dr. Chafin to 1 hospital, 1 physician office and 1 group practice or clinic.
What is Dr. William Aiken Chafin III's office phone number?
The practice phone on file for Dr. Chafin is (706) 475-7000.
What is Dr. William Aiken Chafin III's medical license number?
Dr. Chafin holds Georgia license 67542.
Which hospitals is Dr. William Aiken Chafin III affiliated with?
Dr. Chafin practices at Piedmont Athens Regional in Athens, Georgia. Dr. Chafin is also affiliated with St. Mary's Hospital. Dmand AI links Dr. Chafin to 1 more hospital.
What medical group is Dr. William Aiken Chafin III part of?
Dr. Chafin is linked to Arthritis Center of North Georgia.
Does Dr. William Aiken Chafin III accept Medicare?
Yes. CMS data shows Dr. Chafin billed Medicare for 495,531 services in 2024, and Dr. Chafin accepts Medicare assignment.
What is Dr. William Aiken Chafin III's MIPS score?
Dr. Chafin's MIPS final score for performance year 2024 is 89 out of 100, reported individually.
How many Medicare patients does Dr. William Aiken Chafin III see?
CMS counts 685 Medicare patients who saw Dr. Chafin in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. William Aiken Chafin III bill to Medicare?
In 2024, Dr. Chafin's most billed Medicare services were injected or infused drug (J0717), injected or infused drug (J3262) and injected or infused drug (J0129).
Where did Dr. William Aiken Chafin III go to medical school?
Dr. Chafin graduated from Medical College of Georgia School of Medicine in 2004.
What drugs does Dr. William Aiken Chafin III prescribe most?
In 2024 Medicare Part D data, Dr. Chafin's most prescribed drugs by claims were Hydroxychloroquine Sulfate, Methotrexate and Prednisone.
Has Dr. William Aiken Chafin III received payments from drug or device companies?
CMS Open Payments shows $39,331 in general payments to Dr. Chafin from 37 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. William Aiken Chafin III been practicing?
Dr. Chafin graduated from medical school in 2004, 22 years ago.
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