1. Home
  2. Directory
  3. Illinois
  4. Naperville
  5. Family Medicine
  6. NPI Profile

JANET MARIE NIELSEN M.D.
NPI 1679773980
Family Medicine in Naperville, IL

Active since July 24, 2007PECOS EnrolledAccepts Medicare Assignment
1160 E OGDEN AVE STE 106, NAPERVILLE, IL 60563(331) 226-0315(844) 689-2582 Get Directions Write a Review

NPPES record last updated: September 2, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Sep 2, 2025, Jan 7, 2022, Jun 22, 2021 (3 updates tracked since 2021).

About Janet Marie Nielsen M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JANET MARIE NIELSEN M.D. (NPI 1679773980) is an individual family medicine provider in Naperville, Illinois, licensed in Illinois (036.127246) and active in the NPI registry since July 2007. She is enrolled in Medicare PECOS, is affiliated with Loyola University Medical Center, and maintains a secondary practice location in Melrose Park.

NPPES Registry Identity

NPI1679773980
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameJANET MARIE NIELSENCredential: M.D.
Location Address1160 E OGDEN AVE STE 106Naperville, IL 60563-2693
Mailing Address1160 E Ogden Ave Ste 106Naperville, IL 60563-2693 · (331) 226-0315 · Fax (844) 689-2582
Phone(331) 226-0315
Fax(844) 689-2582
Sole ProprietorNo
Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 2007
Enumeration DateJuly 24, 2007
Last NPPES UpdateSeptember 2, 20253 updates tracked since enumeration
NPPES CertifiedSeptember 2, 2025
✔ NPI 1679773980 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in IL · 036.127246
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1160 E OGDEN AVE STE 106, Naperville, IL 60563
Open in Google Maps ↗

Secondary Practice Location 1

Location 1701 W North AveMelrose Park, IL 60160-1612 · Phone (708) 681-3200

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Janet Marie Nielsen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9830254473
PECOS Enrollment IDI20120823000632
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
148 services140 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
57 services57 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
54 services53 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
42 services42 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Loyola University Medical Center

Acute Care Hospitals · Maywood, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140276
Location2160 S 1st AvenueMaywood, IL 60153 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60563 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$93.02 typical visit price
range $59.81 – $181.38
Typical copayment $23.25 (range $14.95 – $45.34)
Most-billed visit code 99203
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KYLEE J LADD PA
Physician Assistant
1160 E OGDEN AVE STE 106
NAPERVILLE, IL 60563
Dupage County (331) 226-0315

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Janet Nielsen's NPI number?

The NPI number for Janet Nielsen is 1679773980. It was assigned to this individual provider in the NPPES registry on July 24, 2007.

Where is Janet Nielsen located?

Janet Nielsen practices at 1160 E Ogden Ave Ste 106, Naperville, IL 60563. The listed phone number is (331) 226-0315.

What is Janet Nielsen's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Janet Nielsen enrolled in Medicare?

Yes. Janet Nielsen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Janet Nielsen affiliated with any hospitals?

According to CMS data, Janet Nielsen is affiliated with Loyola University Medical Center.

When was this NPI record last updated?

The NPPES record for Janet Nielsen was last updated on September 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.