JENNIFER A HESSER MD
NPI 1124115845
Pediatrics - Neonatal-Perinatal Medicine in Naperville, IL

Q: What is Jennifer Hesser's NPI number?

The NPI number for Jennifer Hesser is 1124115845. It was assigned to this individual provider in the NPPES registry on October 6, 2006.

Q: What is Jennifer Hesser's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Q: When was this NPI record last updated?

The NPPES record for Jennifer Hesser was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.

Active since October 06, 2006PECOS Enrolled

801 S WASHINGTON, NAPERVILLE, IL 60566(847) 991-0440(847) 991-0441 Get Directions Write a Review

NPPES record last updated: January 14, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Jennifer A Hesser Md NPPES

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

JENNIFER A HESSER MD (NPI 1124115845) is an individual neonatal-perinatal medicine provider in Naperville, Illinois, licensed in Illinois (036109059) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS, maintains a secondary practice location in Chicago, and is a graduate of Other (2000).

NPPES Registry Identity

NPI1124115845

Entity TypeIndividualFemale

Primary Taxonomy2080N0001X

Provider Legal NameJENNIFER A HESSERCredential: MD

Location Address801 S WASHINGTONNaperville, IL 60566

Mailing AddressPo Box 487Hinsdale, IL 60522-0487 · (847) 991-0440 · Fax (847) 991-0441

Phone(847) 991-0440

Fax(847) 991-0441

Sole ProprietorNo

Medical School CMSOtherGraduated 2000

Enumeration DateOctober 6, 2006

Last NPPES UpdateJanuary 14, 2026

NPPES CertifiedJanuary 14, 2026

✔ NPI 1124115845 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code2080N0001X

License✔ Licensed in IL · 036109059

Definition

A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.

801 S WASHINGTON, Naperville, IL 60566

Open in Google Maps ↗

Secondary Practice Location 1

Location 15841 S MARYLAND AVEChicago, IL 60637-1443 · Phone (888) 824-0200

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jennifer A Hesser Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID345732038

PECOS Enrollment IDI20251120001533

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.

Medicare Billing Reassignments

Medicare enrollment records show Jennifer Hesser reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Adventist Health Partners, Inc

3.7 mi

Internal Medicine

1012 95TH ST, SUITE 3
Naperville, IL 60564

Reassigned Medicare billing, Illinois enrollment
381 clinicians in this Medicare group

NPI 1124455126 (630) 856-8790

The University Of Chicago Medical Center

28 mi

General Acute Care Hospital

5841 S MARYLAND AVE
Chicago, IL 60637

Reassigned Medicare billing, Illinois enrollment
1,905 clinicians in this Medicare group

NPI 1033218128 (773) 702-1530

University Of Chicago

28 mi

Multi-Specialty

5841 S MARYLAND AVE, UCPG/MC 1099
Chicago, IL 60637

Reassigned Medicare billing, Illinois enrollment
2,237 clinicians in this Medicare group

NPI 1821048786 (773) 702-9200

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 2

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

RAJEEV S DIXIT MD

Pediatrics (Neonatal-Perinatal Medicine)

801 S WASHINGTON
NAPERVILLE, IL 60566

Dupage County (847) 991-0440

LESLIE R FAROLAN MD

Pediatrics (Neonatal-Perinatal Medicine)

801 S WASHINGTON
NAPERVILLE, IL 60566

Dupage County (847) 991-0440

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 Jennifer Hesser's NPI number?

The NPI number for Jennifer Hesser is 1124115845. It was assigned to this individual provider in the NPPES registry on October 6, 2006.

Where is Jennifer Hesser located?

Jennifer Hesser practices at 801 S Washington, Naperville, IL 60566. The listed phone number is (847) 991-0440.

What is Jennifer Hesser's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Is Jennifer Hesser enrolled in Medicare?

Yes. Jennifer Hesser is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Jennifer Hesser's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jennifer Hesser reassigns Medicare benefits to 3 organizations: Adventist Health Partners, Inc (Naperville, IL), The University Of Chicago Medical Center (Chicago, IL) and University Of Chicago (Chicago, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Jennifer Hesser's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jennifer Hesser accept?

Health plans from Oscar Health list Jennifer Hesser as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Jennifer Hesser was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.