Nancy Sullivan, NP
NPI 1992713598 · Adult Health Nurse Practitioner · Williamsville, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Sullivan, NP is a Adult Health Nurse Practitioner provider in Williamsville, NY (NPI 1992713598).
Provider details
- NPI number
- 1992713598
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- F303529-1 (NY)
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 tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
492 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 129 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 111 | $8 |
| Immunologic Analysis for Detection of Tumor Antigen, Quantitative; Ca 15-386300 | 85 | $20 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 40 | $94 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 20 | $14 |
| Carcinoembryonic Antigen (cea) Protein Level |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 238 | 77 |
| Tamoxifen Citrate | 76 | 30 |
| Letrozole | 72 | 24 |
| Exemestane | 26 | — |
| Morphine Sulfatebrand: Morphine Sulfate Er | 24 | — |
| Prednisone | 23 | 12 |
| Prochlorperazine Maleate | 22 | — |
| Potassium Chloride |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$25 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-03
- Last updated
- 2021-12-14
- Certified
- 2021-12-14
Frequently asked questions
- What is Nancy Sullivan's NPI number?
- Nancy Sullivan's National Provider Identifier (NPI) is 1992713598, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Sullivan's specialty?
- Nancy Sullivan is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Nancy Sullivan located?
- Nancy Sullivan's practice location on file with NPPES is 295 Essjay Rd, Williamsville, NY 14221-8216.
- What is Nancy Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Nancy Sullivan is (716) 630-1045.
- Does Nancy Sullivan accept Medicare?
- Nancy Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Sullivan's NPI active?
- Yes — Nancy Sullivan's NPI (1992713598) is active in the NPPES registry as of the last update on 2021-12-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.