Quick answers
- Does Elaine J. Ahillen accept Medicare assignment?
- Yes. Medicare's clinician data says Elaine J. Ahillen 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 Elaine J. Ahillen see?
- In 2024, CMS data shows 305 Original Medicare patients and 1,505 services for Elaine J. Ahillen. This counts Original Medicare only and measures volume, not quality.
- What is Elaine J. Ahillen's NPI number?
- 1891940219. 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 Elaine J. Ahillen, 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 | 305 |
|---|---|
| Services billed to Medicare | 1,505 |
| Different services or procedures | 55 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)248 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)188 services
- X-ray of hand, minimum of 3 views (73130)173 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)172 services
- Injection into tendon or ligament (20550)115 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%
- Arthritis75%
- High blood pressure65%
- Diabetes27%
- Ischemic heart disease22%
- Anxiety20%
Hospitals where Elaine J. Ahillen works
Medicare's Facility Affiliation Data lists Elaine J. Ahillen 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.
- Reston Hospital CenterReston, VA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 490107
- Winchester Medical CenterWinchester, VA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 490005
Practice locations
Addresses where Elaine J. Ahillen is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 1850 Town Ctr PkwyReston, VA 20190 (703) 689‑9000
- 21475 Ridgetop CirSterling, VA 20166
- 6410 Rockledge DrBethesda, MD 20817
- 6410 Rockledge Dr, Suite 600Bethesda, MD 20817
- 7508 Iron Bar LnGainesville, VA 20155 (703) 490‑6726
Group practices
Medicare enrollment lists Elaine J. Ahillen as a member of these groups (CMS data updated October 2, 2026).
- Legacy Healthcare Services Inc3,223 clinicians in the group
- Select Physical Therapy Holdings Inc2,024 clinicians in the group
- Suburban/Nrh Medical Rehabilitation Inc941 clinicians in the group
- Arthritis and Sports Orthopaedics PC23 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Reston
Clinicians with the same Medicare primary specialty in Reston, VA — not a recommendation.
Other clinicians in Legacy Healthcare Services Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Washington University School Of Medicine |
| Graduation year | 2008 (18 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891940219 |
| 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