CHRISTOPHER GREB MD
NPI 1134623895
Internal Medicine - Allergy & Immunology in Chicago, IL
About Christopher Greb Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTOPHER GREB MD (NPI 1134623895) is an individual allergy & immunology provider in Chicago, Illinois, licensed in Illinois (036165118) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with Rush Oak Park Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
An internist doctor of osteopathy that specializes in the treatment of allergy and immunologic disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Special Qualifications in the field of Allergy & Immunology.
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Christopher Greb Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Rush Oak Park Hospital
Acute Care Hospitals · Oak Park, ILRush University Medical Center
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Christopher Greb's NPI number?
The NPI number for Christopher Greb is 1134623895. It was assigned to this individual provider in the NPPES registry on March 19, 2018.
Where is Christopher Greb located?
Christopher Greb practices at 1725 W Harrison Street Ste 970, Chicago, IL 60612. The listed phone number is (312) 942-6979.
What is Christopher Greb's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Allergy & Immunology, with taxonomy code 207RA0201X.
Is Christopher Greb enrolled in Medicare?
Yes. Christopher Greb is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
What insurance does Christopher Greb accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list Christopher Greb 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.
Is Christopher Greb affiliated with any hospitals?
According to CMS data, Christopher Greb is affiliated with Rush Oak Park Hospital and Rush University Medical Center.
When was this NPI record last updated?
The NPPES record for Christopher Greb was last updated on June 26, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.
