William Chafin, M.D.
NPI 1225122716 · Rheumatology Physician · Gainesville, GA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Chafin, M.D. is a Rheumatology Physician provider in Gainesville, GA (NPI 1225122716).
Provider details
- NPI number
- 1225122716
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 67542 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
8,293 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 1,375 | $66 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,305 | $123 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 834 | $118 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 821 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 495 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 492 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 52 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 1,232 | 380 |
| Methotrexate Sodiumbrand: Methotrexate | 1,185 | 335 |
| Prednisone | 939 | 462 |
| Etanerceptbrand: Enbrel Sureclick | 354 | 43 |
| Adalimumabbrand: Humira(cf) Pen | 185 | 31 |
| Abataceptbrand: Orencia Clickject | 174 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,616 across 211 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1715 Resurgence Dr Ste 201Watkinsville, GA 30677-7321Phone: (706) 410-9270
Registry dates
- Enumerated
- 2006-10-02
- Last updated
- 2025-07-14
- Certified
- 2025-07-14
Frequently asked questions
- What is William Chafin's NPI number?
- William Chafin's National Provider Identifier (NPI) is 1225122716, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Chafin's specialty?
- William Chafin is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is William Chafin located?
- William Chafin's practice location on file with NPPES is 700 S Enota Dr Ne, Gainesville, GA 30501-2403.
- What is William Chafin's phone number?
- The practice phone number listed in the NPPES registry for William Chafin is (770) 531-3711.
- Does William Chafin accept Medicare?
- William Chafin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Chafin's NPI active?
- Yes — William Chafin's NPI (1225122716) is active in the NPPES registry as of the last update on 2025-07-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.