Alexandra Dieffenderfer
NPI 1689192312 · Physician Assistant · Chapel Hill, NC
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexandra Dieffenderfer is a Physician Assistant provider in Chapel Hill, NC (NPI 1689192312).
Provider details
- NPI number
- 1689192312
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 0010-07513 (NC)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
133 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Creation of Muscle Graft to Trunk15734 | 41 | $102 |
| Suture of Multiple Tears Or Holes in Small Bowel44603 | 19 | $137 |
| Initial Repair of Sliding Hernia of Abdomen, 3-10 Cm in Length49593 | 18 | $35 |
| Suspension of Small Bowel Using Mesh Or Prosthesis Or Self Tissue44700 | 16 | $62 |
| Drainage of Abdominal Abscess Or Infection49020 | 14 | $135 |
| Release of Scar Tissue at Ureter50715 | 13 | $75 |
| Partial Release of Large Bowel and Partial Removal of Large Bowel Using an Endoscope |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-09-01
- Last updated
- 2019-05-21
Frequently asked questions
- What is Alexandra Dieffenderfer's NPI number?
- Alexandra Dieffenderfer's National Provider Identifier (NPI) is 1689192312, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexandra Dieffenderfer's specialty?
- Alexandra Dieffenderfer is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Alexandra Dieffenderfer located?
- Alexandra Dieffenderfer's practice location on file with NPPES is 101 Manning Dr, Chapel Hill, NC 27514-4220.
- What is Alexandra Dieffenderfer's phone number?
- The practice phone number listed in the NPPES registry for Alexandra Dieffenderfer is (984) 974-1000.
- Does Alexandra Dieffenderfer accept Medicare?
- Alexandra Dieffenderfer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexandra Dieffenderfer's NPI active?
- Yes — Alexandra Dieffenderfer's NPI (1689192312) is active in the NPPES registry as of the last update on 2019-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.