Quick answers
- Does Sisay G. Dejene accept Medicare assignment?
- Yes. Medicare's clinician data says Sisay G. Dejene 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 Sisay G. Dejene see?
- In 2024, CMS data shows 308 Original Medicare patients and 961 services for Sisay G. Dejene. This counts Original Medicare only and measures volume, not quality.
- What is Sisay G. Dejene's NPI number?
- 1558821876. 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 Sisay G. Dejene, 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 | 308 |
|---|---|
| Services billed to Medicare | 961 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)415 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)231 services
- Hospital discharge day management, 30 minutes or less (99238)193 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)100 services
- Hospital discharge day management, more than 30 minutes (99239)12 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%
- Ischemic heart disease53%
- Arthritis52%
- Chronic kidney disease52%
- Diabetes48%
Hospitals where Sisay G. Dejene works
Medicare's Facility Affiliation Data lists Sisay G. Dejene 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.
- Henrico Doctors' HospitalRichmond, VA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 490118
- Inova Alexandria HospitalAlexandria, VA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 490040
- Inova Fairfax HospitalFalls Church, VA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 490063
- Inova Mount Vernon HospitalAlexandria, VA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 490122
- Spotsylvania Regional Medical CenterFredericksburg, VA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 490141
Practice locations
Addresses where Sisay G. Dejene is enrolled with Medicare (CMS data updated October 2, 2026).
- 1701 N George Mason DrArlington, VA 22205 (703) 558‑5000
- 4320 Seminary RdAlexandria, VA 22304 (703) 504‑3000
- 4600 Spotsylvania PkwyFredericksburg, VA 22408 (540) 498‑4000
Group practices
Medicare enrollment lists Sisay G. Dejene as a member of these groups (CMS data updated October 2, 2026).
- Emergency Medicine Associates P.A., P.C.714 clinicians in the group
- Hospital Medicine Services of VA LLC19 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Arlington
Clinicians with the same Medicare primary specialty in Arlington, VA — not a recommendation.
Other clinicians in Emergency Medicine Associates P.A., P.C.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558821876 |
| 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