Quick answers
- Which hospitals does Hillary A. Hahm work at?
- Medicare's official clinician data lists Hillary A. Hahm at 4 hospitals: Piedmont Cartersville Medical Center, Tanner Medical Center Villa Rica, Wellstar Cobb Medical Center and Wellstar Kennestone Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Hillary A. Hahm see patients?
- Medicare's clinician data lists 5 practice locations, including Powder Springs, GA, Smyrna, GA and Roswell, GA. Call before your visit to confirm the address.
- What is Hillary A. Hahm's specialty?
- Medicare lists Hematology/Oncology as the primary specialty, and also Hematology and Medical Oncology.
- Does Hillary A. Hahm accept Medicare assignment?
- Yes. Medicare's clinician data says Hillary A. Hahm 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 Hillary A. Hahm?
- (678) 567-8000, as listed in official Medicare / NPI Registry data.
- What is Hillary A. Hahm's NPI number?
- 1801890280. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Hillary A. Hahm works
Medicare's Facility Affiliation Data lists Hillary A. Hahm at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Piedmont Cartersville Medical CenterCartersville, GA · Acute Care Hospital · CCN 110030
- Tanner Medical Center Villa RicaVilla Rica, GA · Acute Care Hospital · CCN 110015
- Wellstar Cobb Medical CenterAustell, GA · Acute Care Hospital · CCN 110143
- Wellstar Kennestone Regional Medical CenterMarietta, GA · Acute Care Hospital · CCN 110035
Practice locations
Addresses where Hillary A. Hahm is enrolled with Medicare (CMS data updated 2026-10-02).
- 4250 Brownsville RdPowder Springs, GA 30127 (678) 567‑8000
- 4441 Atlanta Rd SESmyrna, GA 30080
- 4500 Hospital BlvdRoswell, GA 30076
- 5 Cloverleaf DrCartersville, GA 30120 (770) 386‑7253
- 5150 Stilesboro N W Rd, Suite 220Kennesaw, GA 30152 (770) 424‑8222
Group practices
Medicare enrollment lists Hillary A. Hahm as a member of this group (CMS data updated 2026-10-02).
- Wellstar Medical Group LLC3,093 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Hematologyalso
- Medical Oncologyalso
Other hematologist-oncologists in Georgia
Clinicians with the same Medicare primary specialty in Georgia — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Johns Hopkins University School Of Medicine |
| Graduation year | 1981 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801890280 |
| 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