Diane Nielsen, M.D.
NPI 1134126949 · Pediatrics Physician · Geneva, IL
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diane Nielsen, M.D. is a Pediatrics Physician provider in Geneva, IL (NPI 1134126949).
Provider details
- NPI number
- 1134126949
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036084404 (IL)
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
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 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.
Practice location
Mailing address
Additional practice locations (1)
- 302 Randall RdSuite 106Geneva, IL 60134Phone: (630) 232-7200Fax: (630) 232-2288
Registry dates
- Enumerated
- 2005-07-07
- Last updated
- 2020-05-20
- Certified
- 2020-05-20
Frequently asked questions
- What is Diane Nielsen's NPI number?
- Diane Nielsen's National Provider Identifier (NPI) is 1134126949, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diane Nielsen's specialty?
- Diane Nielsen is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Diane Nielsen located?
- Diane Nielsen's practice location on file with NPPES is 2800 Keslinger Rd Ste 160, Geneva, IL 60134-3753.
- What is Diane Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Diane Nielsen is (630) 232-7200.
- Does Diane Nielsen accept Medicare?
- Diane Nielsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diane Nielsen's NPI active?
- Yes — Diane Nielsen's NPI (1134126949) is active in the NPPES registry as of the last update on 2020-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.