Quick answers
- Does Johnny K. Barnes Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Johnny K. Barnes 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 Johnny K. Barnes Jr. see?
- In 2024, CMS data shows 193 Original Medicare patients and 195 services for Johnny K. Barnes Jr.. This counts Original Medicare only and measures volume, not quality.
- What is Johnny K. Barnes Jr.'s NPI number?
- 1043383375. 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 Johnny K. Barnes 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 | 193 |
|---|---|
| Services billed to Medicare | 195 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Anesthesia for other procedure on large bowel using an endoscope (00811)92 services
- Anesthesia for procedure on small and large bowel using an endoscope (00813)44 services
- Anesthesia for exam of colon using an endoscope (00812)36 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)23 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 cholesterol73%
- High blood pressure64%
- Arthritis45%
- Ischemic heart disease23%
- Diabetes19%
- Depression17%
Practice locations
Addresses where Johnny K. Barnes Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 1501 Riverside Dr, Suite 117Chattanooga, TN 37406 (423) 648‑0576
Group practices
Medicare enrollment lists Johnny K. Barnes Jr. as a member of this group (CMS data updated October 2, 2026).
- Amsurg Chattanooga Anesthesia LLC9 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Tennessee →
Other nurse anesthetists in Chattanooga
Clinicians with the same Medicare primary specialty in Chattanooga, TN — not a recommendation.
Other clinicians in Amsurg Chattanooga Anesthesia LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2000 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043383375 |
| 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
- 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