Quick answers
- Which hospitals does John C. Williams Iv work at?
- Medicare's official clinician data lists John C. Williams Iv at 3 hospitals: Wellstar Cobb Medical Center, Wellstar Douglas Medical Center and Wellstar Kennestone Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Williams Iv see patients?
- Medicare's clinician data lists 11 practice locations, including Austell, GA, Marietta, GA and Kennesaw, GA. Call before your visit to confirm the address.
- What is John C. Williams Iv's specialty?
- Medicare lists Pulmonary Disease as the primary specialty, and also Critical Care (Intensivists).
- Does John C. Williams Iv accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Williams Iv accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John C. Williams Iv?
- (770) 422-1372, as listed in official Medicare / NPI Registry data.
- What is John C. Williams Iv's NPI number?
- 1841467198. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John C. Williams Iv works
Medicare's Facility Affiliation Data lists John C. Williams Iv at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Wellstar Cobb Medical CenterAustell, GA · Acute Care Hospital · CCN 110143
- Wellstar Douglas Medical CenterDouglasville, GA · Acute Care Hospital · CCN 110184
- Wellstar Kennestone Regional Medical CenterMarietta, GA · Acute Care Hospital · CCN 110035
Practice locations
Addresses where John C. Williams Iv is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 11; the Medicare profile lists all.
- 1664 Mulkey RdAustell, GA 30106 (770) 422‑1372
- 2540 Windy Hill RdMarietta, GA 30067 (770) 644‑1570
- 2540 Windy Hill SerdMarietta, GA 30067 (770) 644‑1274
- 2550 Windy Hill Rd SE, Suite 220Marietta, GA 30067 (404) 321‑9900
- 3950 Austell RdAustell, GA 30106 (770) 732‑4022
Group practices
Medicare enrollment lists John C. Williams Iv as a member of this group (CMS data updated 2026-10-02).
- Wellstar Medical Group LLC3,093 clinicians in the group
Specialties
Other pulmonologists in Austell
Clinicians with the same Medicare primary specialty in Austell, GA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Louisiana State University School Of Medicine In Shreveport |
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841467198 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians