Jeffrey Nielsen, M.D.
NPI 1174630958 · Family Medicine Physician · Saint Charles, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeffrey Nielsen, M.D. is a Family Medicine Physician provider in Saint Charles, IL (NPI 1174630958).
Provider details
- NPI number
- 1174630958
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 36073158 (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
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
- 2006-08-25
- Last updated
- 2007-07-09
Frequently asked questions
- What is Jeffrey Nielsen's NPI number?
- Jeffrey Nielsen's National Provider Identifier (NPI) is 1174630958, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Nielsen's specialty?
- Jeffrey Nielsen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jeffrey Nielsen located?
- Jeffrey Nielsen's practice location on file with NPPES is 2900 Foxfield Rd, Saint Charles, IL 60174-5799.
- What is Jeffrey Nielsen's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Nielsen is (630) 377-6500.
- Does Jeffrey Nielsen accept Medicare?
- Jeffrey Nielsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeffrey Nielsen's NPI active?
- Yes — Jeffrey Nielsen's NPI (1174630958) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.