Nancy Nielsen, M.D,
NPI 1598975443 · Internal Medicine Physician · Orchard Park, NY
Nancy Nielsen, M.D, is a Internal Medicine Physician provider in Orchard Park, NY (NPI 1598975443).
Provider details
- NPI number
- 1598975443
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D,
- Sex
- Female
- Sole proprietor
- Yes
- License
- 133647 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is Nancy Nielsen's NPI number?
- Nancy Nielsen's National Provider Identifier (NPI) is 1598975443, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Nielsen's specialty?
- Nancy Nielsen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Nielsen located?
- Nancy Nielsen's practice location on file with NPPES is 7861 Quaker Rd, Orchard Park, NY 14127-2061.
- What is Nancy Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Nancy Nielsen is (716) 662-9185.
- Is Nancy Nielsen's NPI active?
- Yes — Nancy Nielsen's NPI (1598975443) 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.