Quick answers
- Which hospitals does Corey S. Greenwald work at?
- Medicare's official clinician data lists Corey S. Greenwald at 4 hospitals: Wellstar Cobb Medical Center, Wellstar Douglas Medical Center, Wellstar Kennestone Regional Medical Center and Wellstar North Fulton Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Corey S. Greenwald see patients?
- Medicare's clinician data lists 14 practice locations, including Hiram, GA, Marietta, GA and Roswell, GA. Call before your visit to confirm the address.
- What is Corey S. Greenwald's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Corey S. Greenwald accept Medicare assignment?
- Yes. Medicare's clinician data says Corey S. Greenwald 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.
- Does Corey S. Greenwald offer telehealth?
- Medicare's clinician data says Corey S. Greenwald offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Corey S. Greenwald?
- (770) 732-4022, as listed in official Medicare / NPI Registry data.
- What is Corey S. Greenwald's NPI number?
- 1407857477. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Corey S. Greenwald works
Medicare's Facility Affiliation Data lists Corey S. Greenwald 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
- Wellstar North Fulton Medical CenterRoswell, GA · Acute Care Hospital · CCN 110198
Practice locations
Addresses where Corey S. Greenwald is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 14; the Medicare profile lists all.
- 2518 Jimmy Lee Smith PkwyHiram, GA 30141 (770) 732‑4022
- 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
- 300 Colonial Ctr PkwyRoswell, GA 30076 (833) 351‑8255
Group practices
Medicare enrollment lists Corey S. Greenwald as a member of these groups (CMS data updated 2026-10-02).
- Wellstar Medical Group LLC3,093 clinicians in the group
- MCCD Fl Psychiatry Services PA801 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Georgia
Clinicians with the same Medicare primary specialty in Georgia — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Warren Alpert Medical School Of Brown University |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1407857477 |
| 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