Quick answers
- Which hospitals does Gregory J. Mackay work at?
- Medicare's official clinician data lists Gregory J. Mackay at 1 hospital: Northside Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory J. Mackay see patients?
- Medicare's clinician data lists 2 practice locations, including Atlanta, GA. Call before your visit to confirm the address.
- What is Gregory J. Mackay's specialty?
- Medicare lists Plastic and Reconstructive Surgery as the primary specialty.
- Does Gregory J. Mackay accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory J. Mackay 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 Gregory J. Mackay?
- (404) 851-8000, as listed in official Medicare / NPI Registry data.
- What is Gregory J. Mackay's NPI number?
- 1386686491. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory J. Mackay works
Medicare's Facility Affiliation Data lists Gregory J. Mackay at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northside HospitalAtlanta, GA · Acute Care Hospital · CCN 110161
Practice locations
Addresses where Gregory J. Mackay is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 Johnson Ferry NEAtlanta, GA 30342
- 1000 Johnson Ferry Rd NEAtlanta, GA 30342 (404) 851‑8000
Group practices
Medicare enrollment lists Gregory J. Mackay as a member of this group (CMS data updated 2026-10-02).
- Northside Surgical Professional Services LLC364 clinicians in the group
Specialties
Find other Plastic and Reconstructive Surgery doctors in Georgia →
Other plastic surgeons in Atlanta
Clinicians with the same Medicare primary specialty in Atlanta, GA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical University Of South Carolina College Of Medicine |
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386686491 |
| 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