Quick answers
- Does Alexandra S. Dieffenderfer accept Medicare assignment?
- Yes. Medicare's clinician data says Alexandra S. Dieffenderfer 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 Alexandra S. Dieffenderfer see?
- In 2024, CMS data shows 54 Original Medicare patients and 209 services for Alexandra S. Dieffenderfer. This counts Original Medicare only and measures volume, not quality.
- What is Alexandra S. Dieffenderfer's NPI number?
- 1689192312. 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 Alexandra S. Dieffenderfer, 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 | 54 |
|---|---|
| Services billed to Medicare | 209 |
| Different services or procedures | 34 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Creation of muscle graft to trunk (15734)41 services
- Suture of multiple tears or holes in small bowel (44603)19 services
- Initial repair of sliding hernia of abdomen, 3-10 cm in length (49593)18 services
- Suspension of small bowel using mesh or prosthesis or self tissue (44700)16 services
- Drainage of abdominal abscess or infection (49020)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 cholesterol75%
- High blood pressure72%
- Arthritis50%
- Heart failure35%
- Anxiety33%
- Chronic kidney disease33%
Hospitals where Alexandra S. Dieffenderfer works
Medicare's Facility Affiliation Data lists Alexandra S. Dieffenderfer 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.
- Wakemed, Cary HospitalCary, NC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 340173
- Wakemed, Raleigh CampusRaleigh, NC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 340069
Practice locations
Addresses where Alexandra S. Dieffenderfer is enrolled with Medicare (CMS data updated October 2, 2026).
- 10000 Falls of Neuse RdRaleigh, NC 27614 (919) 350‑8000
- 1900 Kildaire Farm RdCary, NC 27518 (919) 350‑8000
- 3000 New Bern AveRaleigh, NC 27610 (919) 350‑7270
Group practices
Medicare enrollment lists Alexandra S. Dieffenderfer as a member of this group (CMS data updated October 2, 2026).
- WakeMed Specialists Group LLC876 clinicians in the group
Specialties
- Physician Assistantprimary
Find other clinicians: Physician Assistant, North Carolina →
Other physician assistants in Raleigh
Clinicians with the same Medicare primary specialty in Raleigh, NC — not a recommendation.
Other clinicians in WakeMed Specialists Group LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2017 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689192312 |
| 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