Karen Nielsen
NPI 1902980816 · Anesthesiology Physician · Durham, NC
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Nielsen is a Anesthesiology Physician provider in Durham, NC (NPI 1902980816).
Provider details
- NPI number
- 1902980816
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 99-01092 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
254 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) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 53 | $58 |
| Anesthesia for Other Procedure on Skin of Arms, Legs, and Front Body00400 | 33 | $90 |
| Anesthesia for Procedure on Nerves, Muscles, Tendons, Fascia, and Bursae of Shoulder and Underarm01610 | 31 | $163 |
| Anesthesia for Other Procedure on Skin, Muscles, Or Nerves of Head, Neck, and Upper Back00300 | 21 | $112 |
| Anesthesia for Other Procedure on Urinary System Through Urethra00910 | 20 | $67 |
| Anesthesia for Procedure on Nerves, Muscles, Tendons, and Tissue of Forearm, Wrist, and Hand01810 | 20 | $58 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-25
- Last updated
- 2007-07-08
Frequently asked questions
- What is Karen Nielsen's NPI number?
- Karen Nielsen's National Provider Identifier (NPI) is 1902980816, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Nielsen's specialty?
- Karen Nielsen is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Nielsen located?
- Karen Nielsen's practice location on file with NPPES is 2100 Erwin Rd, Durham, NC 27710-0001.
- What is Karen Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Karen Nielsen is (919) 620-4467.
- Does Karen Nielsen accept Medicare?
- Karen Nielsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Nielsen's NPI active?
- Yes — Karen Nielsen's NPI (1902980816) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.