Quick answers
- Which hospitals does John J. Marshall work at?
- Medicare's official clinician data lists John J. Marshall at 3 hospitals: Northeast Georgia Medical Center Habersham, Northside Hospital and Northside Hospital Forsyth. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John J. Marshall see patients?
- Medicare's clinician data lists 1 practice location in Sandy Springs, GA. Call before your visit to confirm the address.
- What is John J. Marshall's specialty?
- Medicare lists Interventional Cardiology as the primary specialty, and also Cardiovascular Disease (Cardiology).
- Does John J. Marshall accept Medicare assignment?
- Yes. Medicare's clinician data says John J. Marshall 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 J. Marshall?
- (678) 223-7928, as listed in official Medicare / NPI Registry data.
- What is John J. Marshall's NPI number?
- 1184676413. 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 J. Marshall works
Medicare's Facility Affiliation Data lists John J. Marshall at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northeast Georgia Medical Center HabershamDemorest, GA · Acute Care Hospital · CCN 110041
- Northside HospitalAtlanta, GA · Acute Care Hospital · CCN 110161
- Northside Hospital ForsythCumming, GA · Acute Care Hospital · CCN 110005
Practice locations
Addresses where John J. Marshall is enrolled with Medicare (CMS data updated 2026-10-02).
- 6135 Barfield Rd, Suite 100Sandy Springs, GA 30328 (678) 223‑7928
Group practices
Medicare enrollment lists John J. Marshall as a member of this group (CMS data updated 2026-10-02).
- Northside Cardiovascular Professional Services, LLC173 clinicians in the group
Specialties
Other interventional cardiologists in Georgia
Clinicians with the same Medicare primary specialty in Georgia — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Florida College Of Medicine |
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184676413 |
| 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