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NATALIE KLEEMAN KLAPHOLZ
NPI 1457096497
Pediatrics - Neonatal-Perinatal Medicine in Chicago, IL

Active since May 04, 2022PECOS Enrolled
5841 S MARYLAND AVE # MC8016, CHICAGO, IL 60637(773) 702-6435 Get Directions Write a Review

NPPES record last updated: September 24, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Natalie Kleeman Klapholz NPPES

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

NATALIE KLEEMAN KLAPHOLZ (NPI 1457096497) is an individual neonatal-perinatal medicine provider in Chicago, Illinois, licensed in Illinois (036174212) and active in the NPI registry since May 2022. She is enrolled in Medicare PECOS and is a graduate of Tufts University School Of Medicine (2022).

NPPES Registry Identity

NPI1457096497
Entity TypeIndividualFemale
Primary Taxonomy2080N0001X
Provider Legal NameNATALIE KLEEMAN KLAPHOLZ
Location Address5841 S MARYLAND AVE # MC8016Chicago, IL 60637-1443
Mailing Address150 Harvester Dr Ste 300Burr Ridge, IL 60527-5965 · (773) 702-1150
Phone(773) 702-6435
Sole ProprietorNo
Medical School CMSTufts University School Of MedicineGraduated 2022
Enumeration DateMay 4, 2022
Last NPPES UpdateSeptember 24, 2025
NPPES CertifiedSeptember 24, 2025
✔ NPI 1457096497 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
License✔ Licensed in IL · 036174212
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.
Also ListedPediatricsTaxonomy 208000000X · License 036174212 (IL)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
5841 S MARYLAND AVE # MC8016, Chicago, IL 60637
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Other Names 1

Former Name (1)Natalie Kleeman

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)

Natalie Kleeman Klapholz is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6103206883
PECOS Enrollment IDI20251006000398
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

2

Medicare enrollment records show Natalie Klapholz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The University Of Chicago Medical Center
Same address
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
Same address
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 20

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

MAHI KAUR SINGH MD
Student in an Organized Health Care Education/Training Program
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000
ANNA PERRY MD
Pediatrics
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000
DR. PAREENAZ BEHBAHANI-NEJAD MD
Pediatrics
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000
CAROLINE MARIE GOELLER
Pediatrics
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000
SIERRA ROSE BLASHOCK MD
Pediatrics
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-6435
PRIYA KARKHANIS
Pediatrics
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000
BOGDAN POPESCU MD, PHD
Pediatrics
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000
ALLYSON SEGALL
Student in an Organized Health Care Education/Training Program
5841 S MARYLAND AVE # MC8016
CHICAGO, IL 60637
Cook County (773) 702-1000

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 Natalie Klapholz's NPI number?

The NPI number for Natalie Klapholz is 1457096497. It was assigned to this individual provider in the NPPES registry on May 4, 2022. The provider is also known as Natalie Kleeman.

Where is Natalie Klapholz located?

Natalie Klapholz practices at 5841 S Maryland Ave # Mc8016, Chicago, IL 60637. The listed phone number is (773) 702-6435.

What is Natalie Klapholz's specialty?

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

Is Natalie Klapholz enrolled in Medicare?

Yes. Natalie Klapholz is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Natalie Klapholz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Natalie Klapholz reassigns Medicare benefits to 2 organizations: 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 Natalie Klapholz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Natalie Klapholz accept?

Health plans from Oscar Health list Natalie Klapholz 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 Natalie Klapholz was last updated on September 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.