Quick answers
- Does James L. Zellner accept Medicare assignment?
- Yes. Medicare's clinician data says James L. Zellner 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 James L. Zellner see?
- In 2024, CMS data shows 158 Original Medicare patients and 463 services for James L. Zellner. This counts Original Medicare only and measures volume, not quality.
- What is James L. Zellner's NPI number?
- 1184610867. 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 James L. Zellner, 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 | 158 |
|---|---|
| Services billed to Medicare | 463 |
| Different services or procedures | 61 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)62 services
- Harvest of vein using an endoscope (33508)40 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)29 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)28 services
- Harvest of arm artery segment for heart byplass procedure (35600)24 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%
- Ischemic heart disease75%
- Atrial fibrillation54%
- Heart failure52%
- Arthritis49%
Hospitals where James L. Zellner works
Medicare's Facility Affiliation Data lists James L. Zellner 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.
- Hamilton Medical CenterDalton, GA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 110001
- Memorial Healthcare System, IncChattanooga, TN · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 440091
Practice locations
Addresses where James L. Zellner is enrolled with Medicare (CMS data updated October 2, 2026).
- 1200 Memorial DrDalton, GA 30720 (706) 226‑6000
- 2501 Citico AveChattanooga, TN 37404 (423) 697‑2000
- 2525 Desales AveChattanooga, TN 37404 (423) 495‑2525
Group practices
Medicare enrollment lists James L. Zellner as a member of these groups (CMS data updated October 2, 2026).
- Hamilton Physician Group, Inc118 clinicians in the group
- Memorial Health Care System Inc.56 clinicians in the group
Specialties
Other cardiac surgeons in Georgia
Clinicians with the same Medicare primary specialty in Georgia — not a recommendation.
Other clinicians in Hamilton Physician Group, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Cincinnati College Of Medicine |
| Graduation year | 1986 (40 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184610867 |
| 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