Annabelle Nielsen, MD
NPI 1578198651 · Emergency Medicine Physician · Sewickley, PA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Annabelle Nielsen, MD is a Emergency Medicine Physician provider in Sewickley, PA (NPI 1578198651).
Provider details
- NPI number
- 1578198651
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefuroxime Axetilbrand: Cefuroxime | 23 | 23 |
| Ondansetronbrand: Ondansetron Odt | 16 | 16 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 900 23rd St NwWashington, DC 20037-2342Phone: (202) 715-4000
- 200 Lothrop StPittsburgh, PA 15213-2536Phone: (412) 647-3333
Registry dates
- Enumerated
- 2020-03-09
- Last updated
- 2025-08-22
- Certified
- 2025-07-28
Frequently asked questions
- What is Annabelle Nielsen's NPI number?
- Annabelle Nielsen's National Provider Identifier (NPI) is 1578198651, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Annabelle Nielsen's specialty?
- Annabelle Nielsen is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Annabelle Nielsen located?
- Annabelle Nielsen's practice location on file with NPPES is 701 Broad St, Sewickley, PA 15143-1681.
- What is Annabelle Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Annabelle Nielsen is (412) 741-6600.
- Does Annabelle Nielsen accept Medicare?
- Annabelle Nielsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Annabelle Nielsen's NPI active?
- Yes — Annabelle Nielsen's NPI (1578198651) is active in the NPPES registry as of the last update on 2025-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.