CASSANDRA MARIE ZIESEMER DO
NPI 1265372239
Pediatrics in Oak Lawn, IL

Active since March 30, 2026
4220 W 95TH ST STE 210, OAK LAWN, IL 60453(312) 949-4200 Get Directions Write a Review

NPPES record last updated: June 9, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 20, 2026, Mar 30, 2026 (2 updates tracked since 2026).

About Cassandra Marie Ziesemer Do NPPES

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

CASSANDRA MARIE ZIESEMER DO (NPI 1265372239) is an individual pediatrics provider in Oak Lawn, Illinois, licensed in Illinois (125.087419) and active in the NPI registry since March 2026.

NPPES Registry Identity

NPI1265372239
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameCASSANDRA MARIE ZIESEMERCredential: DO
Location Address4220 W 95TH ST STE 210Oak Lawn, IL 60453-2793
Mailing Address4220 W 95th St Ste 210Oak Lawn, IL 60453-2793
Sole ProprietorNo
Enumeration DateMarch 30, 2026
Last NPPES UpdateJune 9, 20262 updates tracked since enumeration
NPPES CertifiedJune 9, 2026
NPI 1265372239 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License Licensed in IL · 125.087419
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
4220 W 95TH ST STE 210, Oak Lawn, IL 60453

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.

Pediatrics
4220 W 95TH ST STE 210
OAK LAWN, IL 60453
Internal Medicine
4220 W 95TH ST STE 210
OAK LAWN, IL 60453
Pediatrics
4220 W 95TH ST STE 210
OAK LAWN, IL 60453
Pediatrics
4220 W 95TH ST STE 210
OAK LAWN, IL 60453
Pediatrics
4220 W 95TH ST STE 210
OAK LAWN, IL 60453
Pediatrics
4220 W 95TH ST STE 210
OAK LAWN, IL 60453
Pediatrics
4220 W 95TH ST STE 210
OAK LAWN, IL 60453
Dietitian, Registered (Nutrition, Pediatric)
4220 W 95TH ST STE 210
OAK LAWN, IL 60453

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 Cassandra Ziesemer's NPI number?

The NPI number for Cassandra Ziesemer is 1265372239. It was assigned to this individual provider in the NPPES registry on March 30, 2026.

Where is Cassandra Ziesemer located?

Cassandra Ziesemer practices at 4220 W 95th St Ste 210, Oak Lawn, IL 60453. The listed phone number is (312) 949-4200.

What is Cassandra Ziesemer's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

When was this NPI record last updated?

The NPPES record for Cassandra Ziesemer was last updated on June 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 57 days 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.