Quick answers
- Does Amanda Onyewuenyi accept Medicare assignment?
- Yes. Medicare's clinician data says Amanda Onyewuenyi 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 Amanda Onyewuenyi see?
- In 2024, CMS data shows 46 Original Medicare patients and 87 services for Amanda Onyewuenyi. This counts Original Medicare only and measures volume, not quality.
- What is Amanda Onyewuenyi's NPI number?
- 1336609544. 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 Amanda Onyewuenyi, 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 | 46 |
|---|---|
| Services billed to Medicare | 87 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)28 services
- Assessment of emotional or behavioral problems (96127)18 services
- Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)14 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 cholesterol59%
- Arthritis48%
- High blood pressure46%
- Osteoporosis30%
Hospitals where Amanda Onyewuenyi works
Medicare's Facility Affiliation Data lists Amanda Onyewuenyi 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.
- Sibley Memorial HospitalWashington, DC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 090005
Practice locations
Addresses where Amanda Onyewuenyi is enrolled with Medicare (CMS data updated October 2, 2026).
- 1133 21st St NW, Suite 200Washington, DC 20036 (202) 331‑1740
- 5530 Wisconsin Ave, Suite 604Chevy Chase, MD 20815 (301) 654‑5700
- 5550 Friendship Blvd, Suite 210Chevy Chase, MD 20815 (301) 654‑5700
Group practices
Medicare enrollment lists Amanda Onyewuenyi as a member of these groups (CMS data updated October 2, 2026).
- Maryland Physicians Edge LLC97 clinicians in the group
- Reiter and Hill PLLC17 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Find other Obstetrics/Gynecology doctors in District of Columbia →
Other OB-GYNs in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Other clinicians in Maryland Physicians Edge LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336609544 |
| 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