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CORRYN SIEGEL GREENWOOD MD
NPI 1902923188
Pediatrics - Neonatal-Perinatal Medicine in Chicago, IL

Active since March 23, 2007PECOS Enrolled
225 E CHICAGO AVE, CHICAGO, IL 60611(312) 227-1400 Get Directions Write a Review

NPPES record last updated: November 17, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 17, 2023, Sep 23, 2022, Aug 26, 2022 and 1 more (4 updates tracked since 2018).

About Corryn Siegel Greenwood Md NPPES

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

CORRYN SIEGEL GREENWOOD MD (NPI 1902923188) is an individual neonatal-perinatal medicine provider in Chicago, Illinois, licensed in Indiana (01071273A) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1902923188
Entity TypeIndividualFemale
Primary Taxonomy2080N0001X
Provider Legal NameCORRYN SIEGEL GREENWOODCredential: MD
Location Address225 E CHICAGO AVEChicago, IL 60611-2991
Mailing Address225 E Chicago AveChicago, IL 60611-2991
Phone(312) 227-1400
Sole ProprietorNo
Enumeration DateMarch 23, 2007
Last NPPES UpdateNovember 17, 20234 updates tracked since enumeration
NPPES CertifiedNovember 15, 2023
✔ NPI 1902923188 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
Licenses✔ Licensed in IN · 01071273A✔ Licensed in OH · 093649✔ Licensed in IL · 036130822
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.
225 E CHICAGO AVE, Chicago, IL 60611
Open in Google Maps ↗

Other Names 1

Former Name (1)Corryn Siegel Md

Secondary Practice Locations 2

Location 11201 S Main StCrown Point, IN 46307-8481 · Phone (219) 757-5887 · Fax (219) 757-6481
Location 212750 St Francis DrCrown Point, IN 46307-0264 · Phone (219) 757-6004 · Fax (219) 681-6871

Other Identifiers 1

Medicaid017930000MN

Accepted Insurance

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Corryn Siegel Greenwood Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Corryn Greenwood reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Lurie Children's Medical Group Inc
Same address
Pediatrics
225 E CHICAGO AVE
Chicago, IL 60611
  • Reassigned Medicare billing, Illinois enrollment
  • 826 clinicians in this Medicare group
NPI 1518064716 (312) 227-6412
Franciscan Physician Network
75 mi
Urgent Care
1515 W DRAGOON TRL
Mishawaka, IN 46544
  • Reassigned Medicare billing, Indiana enrollment
  • 1,396 clinicians in this Medicare group
NPI 1366879009 (574) 254-6253

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.

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 Corryn Greenwood's NPI number?

The NPI number for Corryn Greenwood is 1902923188. It was assigned to this individual provider in the NPPES registry on March 23, 2007. The provider is also known as Corryn Siegel MD.

Where is Corryn Greenwood located?

Corryn Greenwood practices at 225 E Chicago Ave, Chicago, IL 60611. The listed phone number is (312) 227-1400.

What is Corryn Greenwood's specialty?

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

Is Corryn Greenwood enrolled in Medicare?

Yes. Corryn Greenwood is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Corryn Greenwood's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Corryn Greenwood reassigns Medicare benefits to 2 organizations: Lurie Children's Medical Group Inc (Chicago, IL) and Franciscan Physician Network (Mishawaka, IN). 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 Corryn Greenwood's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Corryn Greenwood accept?

Health plans from CareSource list Corryn Greenwood 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 Corryn Greenwood was last updated on November 17, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.