Quick answers
- Does Rohan R. Rengen accept Medicare assignment?
- Yes. Medicare's clinician data says Rohan R. Rengen 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 Rohan R. Rengen see?
- In 2024, CMS data shows 814 Original Medicare patients and 3,714 services for Rohan R. Rengen. This counts Original Medicare only and measures volume, not quality.
- What is Rohan R. Rengen's NPI number?
- 1609067792. 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 Rohan R. Rengen, 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 | 814 |
|---|---|
| Services billed to Medicare | 3,714 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)1,307 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)421 services
- Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)391 services
- Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes (99458)355 services
- Dialysis services, 4 or more physician visits per month (20 years or older) (90960)349 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%
- Chronic kidney disease75%
- Diabetes55%
- Ischemic heart disease52%
- Arthritis51%
Hospitals where Rohan R. Rengen works
Medicare's Facility Affiliation Data lists Rohan R. Rengen 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.
- Frederick Health HospitalFrederick, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210005
- Gettysburg HospitalGettysburg, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390065
Practice locations
Addresses where Rohan R. Rengen is enrolled with Medicare (CMS data updated October 2, 2026).
- 5205 Chairmans Ct, Suite 100Frederick, MD 21703 (301) 696‑0012
Group practices
Medicare enrollment lists Rohan R. Rengen as a member of this group (CMS data updated October 2, 2026).
- Frederick Kidney Care Associates LLC.4 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in Maryland
Clinicians with the same Medicare primary specialty in Maryland — not a recommendation.
Other clinicians in Frederick Kidney Care Associates LLC.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2001 (25 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1609067792 |
| 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