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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

RACHEL SYDNEY WERK
NPI 1316400658
Pediatrics - Pediatric Hematology-Oncology in Chicago, IL

Active since April 12, 2019PECOS Enrolled
225 E CHICAGO AVE, CHICAGO, IL 60611(312) 227-4000 Get Directions Write a Review

NPPES record last updated: August 7, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Aug 7, 2026, Apr 9, 2025, Sep 4, 2024 and 1 more (4 updates tracked since 2019).

About Rachel Sydney Werk NPPES

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

RACHEL SYDNEY WERK (NPI 1316400658) is an individual pediatric hematology-oncology provider in Chicago, Illinois, licensed in Illinois (036.159755) and active in the NPI registry since April 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2019).

NPPES Registry Identity

NPI1316400658
Entity TypeIndividualFemale
Primary Taxonomy2080P0207X
Provider Legal NameRACHEL SYDNEY WERK
Location Address225 E CHICAGO AVEChicago, IL 60611-2991
Mailing Address225 E Chicago AveChicago, IL 60611-2991 · (312) 227-4000
Phone(312) 227-4000
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateApril 12, 2019
Last NPPES UpdateAugust 7, 20264 updates tracked since enumeration
NPPES CertifiedAugust 7, 2026
✔ NPI 1316400658 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric Hematology-OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0207X
License✔ Licensed in IL · 036.159755
Definition
A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.
225 E CHICAGO AVE, Chicago, IL 60611
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Rachel Sydney Werk is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID1254803901
PECOS Enrollment IDI20260615001064
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.

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.

BESSEY ELIZABETH JOSE GEEVARGHESE DO
Pediatrics
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (630) 933-6631
CHRISTINA SOOJIN KIM M.D.
Pediatrics
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (443) 928-7458
JESSICA LAUREN OFFENBACH APN
Nurse Practitioner (Pediatrics)
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-4000
MS. JENNY KO LEE APN
Nurse Practitioner (Neonatal)
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (847) 962-6268
ERIN COHEN MD
Pediatrics (Hospice and Palliative Medicine)
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-4000
DR. JOSEPH HART COLLINS MD
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-3550
ALEXIS LYN HARMON
Student in an Organized Health Care Education/Training Program
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-4000
SHANNON JULIA CONWAY MD
Student in an Organized Health Care Education/Training Program
225 E CHICAGO AVE
CHICAGO, IL 60611
Cook County (312) 227-4000

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 Rachel Werk's NPI number?

The NPI number for Rachel Werk is 1316400658. It was assigned to this individual provider in the NPPES registry on April 12, 2019.

Where is Rachel Werk located?

Rachel Werk practices at 225 E Chicago Ave, Chicago, IL 60611. The listed phone number is (312) 227-4000.

What is Rachel Werk's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.

Is Rachel Werk enrolled in Medicare?

Yes. Rachel Werk is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Rachel Werk was last updated on August 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.