Quick answers
- Does John A. Cowan Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says John A. Cowan Jr. 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 John A. Cowan Jr. see?
- In 2024, CMS data shows 205 Original Medicare patients and 891 services for John A. Cowan Jr.. This counts Original Medicare only and measures volume, not quality.
- What is John A. Cowan Jr.'s NPI number?
- 1588786669. 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 John A. Cowan Jr., 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 | 205 |
|---|---|
| Services billed to Medicare | 891 |
| Different services or procedures | 77 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)157 services
- Computer-assisted spinal procedure (61783)55 services
- Partial removal of bone of additional segment of spine in lower back with release of spinal cord and/or nerves during fusion of spine in lower back (63053)47 services
- Partial removal of bone of single segment of spine in lower back with release of spinal cord and/or nerves during fusion of spine in lower back (63052)45 services
- Fusion of spine in lower back with partial removal of spine bone and disc (22633)44 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 blood pressure75%
- High cholesterol75%
- Arthritis75%
- Diabetes45%
- Ischemic heart disease41%
- Depression40%
Hospitals where John A. Cowan Jr. works
Medicare's Facility Affiliation Data lists John A. Cowan Jr. 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.
- AdventHealth GordonCalhoun, GA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 110023
- AdventHealth RedmondRome, GA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 110168
- Atrium Health Floyd Medical CenterRome, GA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 110054
Practice locations
Addresses where John A. Cowan Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 15 John Maddox Dr NWRome, GA 30165 (706) 368‑8550
- 501 Redmond Rd NWRome, GA 30165 (706) 291‑0291
- 591 Redmond Rd NWRome, GA 30165 (706) 368‑8500
- 7 John Maddox Dr NWRome, GA 30165 (706) 368‑8500
Group practices
Medicare enrollment lists John A. Cowan Jr. as a member of this group (CMS data updated October 2, 2026).
- Adventist Health System Georgia Inc256 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in Georgia
Clinicians with the same Medicare primary specialty in Georgia — not a recommendation.
Other clinicians in Adventist Health System Georgia Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Johns Hopkins University School Of Medicine |
| Graduation year | 2001 (25 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588786669 |
| 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