Quick answers
- Does Marc J. Harrigan accept Medicare assignment?
- Yes. Medicare's clinician data says Marc J. Harrigan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Marc J. Harrigan see?
- In 2024, CMS data shows 77 Original Medicare patients and 402 services for Marc J. Harrigan. This counts Original Medicare only and measures volume, not quality.
- What is Marc J. Harrigan's NPI number?
- 1982794772. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Marc J. Harrigan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 77 |
|---|---|
| Services billed to Medicare | 402 |
| Different services or procedures | 36 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)71 services
- Insertion of needle into vein for collection of blood sample (36415)61 services
- Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)50 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)26 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)26 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure66%
- Arthritis53%
- Ischemic heart disease43%
- Chronic kidney disease34%
- Diabetes26%
Hospitals where Marc J. Harrigan works
Medicare's Facility Affiliation Data lists Marc J. Harrigan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Piedmont Hospital, IncAtlanta, GA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 110083
Practice locations
Addresses where Marc J. Harrigan is enrolled with Medicare (CMS data updated October 2, 2026).
- 3280 Howell Mill Rd NW, Suite 207Atlanta, GA 30327 (404) 355‑7055
- 3999 Austell Rd, Suite 901Austell, GA 30106 (770) 809‑3032
Group practices
Medicare enrollment lists Marc J. Harrigan as a member of this group (CMS data updated October 2, 2026).
- Wellstreet of Georgia PC430 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Atlanta
Clinicians with the same Medicare primary specialty in Atlanta, GA — not a recommendation.
Other clinicians in Wellstreet of Georgia PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Virginia School Of Medicine |
| Graduation year | 1997 (29 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1982794772 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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