Quick answers
- Does Ellie S. Kwak accept Medicare assignment?
- Yes. Medicare's clinician data says Ellie S. Kwak 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 Ellie S. Kwak see?
- In 2024, CMS data shows 1,327 Original Medicare patients and 2,918 services for Ellie S. Kwak. This counts Original Medicare only and measures volume, not quality.
- What is Ellie S. Kwak's NPI number?
- 1912262551. 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 Ellie S. Kwak, 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 | 1,327 |
|---|---|
| Services billed to Medicare | 2,918 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Screening mammography (77067)691 services
- Screening 3d breast mammography (77063)641 services
- Dxa bone density measurement of hip, pelvis, spine (77080)387 services
- Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)200 services
- Diagnostic mammography of both breasts (77066)177 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 cholesterol75%
- High blood pressure61%
- Arthritis43%
- Osteoporosis31%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)26%
- Diabetes20%
Practice locations
Addresses where Ellie S. Kwak is enrolled with Medicare (CMS data updated October 2, 2026).
- 67 Thomas Johnson Dr, Suite 4Frederick, MD 21702 (888) 601‑0943
- 701 Ware St SWVienna, VA 22180 (888) 601‑3664
Group practices
Medicare enrollment lists Ellie S. Kwak as a member of this group (CMS data updated October 2, 2026).
- Community Radiology Associates Inc65 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Frederick
Clinicians with the same Medicare primary specialty in Frederick, MD — not a recommendation.
Other clinicians in Community Radiology Associates Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tufts University School Of Medicine |
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912262551 |
| 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