Quick answers
- Does Gregory A. Rimmer accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory A. Rimmer 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 Gregory A. Rimmer see?
- In 2024, CMS data shows 337 Original Medicare patients and 387 services for Gregory A. Rimmer. This counts Original Medicare only and measures volume, not quality.
- What is Gregory A. Rimmer's NPI number?
- 1558304113. 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 Gregory A. Rimmer, 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 | 337 |
|---|---|
| Services billed to Medicare | 387 |
| Different services or procedures | 16 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Emergency department visit with moderate level of medical decision making (99284)163 services
- Emergency department visit with high level of medical decision making (99285)159 services
- Emergency department visit with low level of medical decision making (99283)27 services
- Critical care, first 30-74 minutes (99291)13 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%
- Arthritis54%
- Diabetes51%
- Chronic kidney disease49%
- Ischemic heart disease46%
Hospitals where Gregory A. Rimmer works
Medicare's Facility Affiliation Data lists Gregory A. Rimmer 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.
- Citizens Memorial HospitalBolivar, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260195
- MUSC Health Lancaster Medical CenterLancaster, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 420036
- Northeast Regional Medical CenterKirksville, MO · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 260022
Practice locations
Addresses where Gregory A. Rimmer is enrolled with Medicare (CMS data updated October 2, 2026).
- 1500 N Oakland Ave, Citizens Memorial HospitalBolivar, MO 65613 (417) 326‑6000
- 315 S Osteopathy AveKirksville, MO 63501 (660) 785‑1000
- 800 W Meeting StLancaster, SC 29720 (803) 286‑1330
Group practices
Medicare enrollment lists Gregory A. Rimmer as a member of these groups (CMS data updated October 2, 2026).
- MUSC Community Physicians1,544 clinicians in the group
- Citizens Memorial Hospital District54 clinicians in the group
- Ripley Emergency Group LLC37 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Bolivar
Clinicians with the same Medicare primary specialty in Bolivar, MO — not a recommendation.
Other clinicians in MUSC Community Physicians
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | At Still University Of Health Sciences, College Of Osteo Med, Kirksville |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558304113 |
| 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