Quick answers
- Does Roger Ewonkem accept Medicare assignment?
- Yes. Medicare's clinician data says Roger Ewonkem 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 Roger Ewonkem see?
- In 2024, CMS data shows 29 Original Medicare patients and 173 services for Roger Ewonkem. This counts Original Medicare only and measures volume, not quality.
- What is Roger Ewonkem's NPI number?
- 1821288440. 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 Roger Ewonkem, 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 | 29 |
|---|---|
| Services billed to Medicare | 173 |
| Different services or procedures | 24 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)70 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)34 services
- Insertion of needle into vein for collection of blood sample (36415)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%
- Diabetes48%
- Chronic kidney disease48%
- Arthritis38%
Practice locations
Addresses where Roger Ewonkem is enrolled with Medicare (CMS data updated October 2, 2026).
- 7432 Little River TpkeAnnandale, VA 22003 (703) 658‑7060
- 9470 Annapolis Rd, Suite 309Lanham, MD 20706 (202) 832‑1800
Group practices
Medicare enrollment lists Roger Ewonkem as a member of this group (CMS data updated October 2, 2026).
- Privia Medical Group, LLC1,533 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Annandale
Clinicians with the same Medicare primary specialty in Annandale, VA — not a recommendation.
Other clinicians in Privia Medical Group, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1994 (32 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821288440 |
| 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