Quick answers
- Does John R. Rentz accept Medicare assignment?
- Yes. Medicare's clinician data says John R. Rentz 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 R. Rentz see?
- In 2024, CMS data shows 348 Original Medicare patients and 372 services for John R. Rentz. This counts Original Medicare only and measures volume, not quality.
- What is John R. Rentz's NPI number?
- 1588817696. 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 R. Rentz, 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 | 348 |
|---|---|
| Services billed to Medicare | 372 |
| Different services or procedures | 59 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Anesthesia for other procedure on large bowel using an endoscope (00811)52 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)33 services
- Anesthesia for other procedure on urinary system through urethra (00910)21 services
- Anesthesia for other procedure on skin of arms, legs, and front body (00400)20 services
- Anesthesia for exam of colon using an endoscope (00812)18 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%
- Arthritis53%
- Diabetes37%
- Ischemic heart disease25%
- Anxiety24%
Hospitals where John R. Rentz works
Medicare's Facility Affiliation Data lists John R. Rentz 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.
- Baptist Health Medical Center - JacksonvilleJacksonville, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100088
- Memorial Satilla HealthWaycross, GA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 110003
- Southeast Georgia Health System- Brunswick CampusBrunswick, GA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 110025
- Southeast Georgia Health System- Camden CampusSaint Marys, GA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 110146
Practice locations
Addresses where John R. Rentz is enrolled with Medicare (CMS data updated October 2, 2026).
- 1900 Tebeau StWaycross, GA 31501 (912) 283‑3030
- 2000 Dan Proctor DrSaint Marys, GA 31558 (880) 233‑2570
- 3100 Kemble AveBrunswick, GA 31520 (880) 233‑2570
- 800 Prudential DrJacksonville, FL 32207 (904) 202‑2000
Group practices
Medicare enrollment lists John R. Rentz as a member of these groups (CMS data updated October 2, 2026).
- US Anesthesia Partners of Florida Inc1,136 clinicians in the group
- Ams Southeast LLC86 clinicians in the group
- Alta Anesthesia Associates of Georgia, PC44 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Waycross
Clinicians with the same Medicare primary specialty in Waycross, GA — not a recommendation.
Other clinicians in US Anesthesia Partners of Florida Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Emory University School Of Medicine |
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588817696 |
| 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