GREG D EWERT MD SC
NPI 1679969182
Internal Medicine - Adolescent Medicine in Chicago, IL
About Greg D Ewert Md Sc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREG D EWERT MD SC (NPI 1679969182) is a healthcare organization registered as an adolescent medicine in Chicago, Illinois and active in the NPI registry since April 2015. The organization lists Greg Ewert, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Greg D Ewert Md Sc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Greg D Ewert MD Sc, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Greg D Ewert MD Sc's NPI number?
The NPI number for Greg D Ewert MD Sc is 1679969182. It was assigned to this organization in the NPPES registry on April 10, 2015.
Where is Greg D Ewert MD Sc located?
Greg D Ewert MD Sc is located at 200 S Michigan Ave Suite 805, Chicago, IL 60604. The listed phone number is (312) 922-3815.
What is Greg D Ewert MD Sc's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Adolescent Medicine, with taxonomy code 207RA0000X.
Is Greg D Ewert MD Sc enrolled in Medicare?
Yes. Greg D Ewert MD Sc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Greg D Ewert MD Sc?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Greg D Ewert MD Sc. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Greg D Ewert MD Sc was last updated on April 10, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Greg D Ewert Md Sc · NPI 1679969182
Adolescent Medicine organization in Chicago, Illinois. Organization record, active in the CMS NPPES registry since April 10, 2015.
## Identity
- **NPI:** 1679969182 (Entity type: Organization)
- **Enumerated:** April 10, 2015
- **Primary specialty:** Internal Medicine - Adolescent Medicine · taxonomy 207RA0000X
- **Organization subpart:** No
- **Authorized official:** Greg Ewert, OWNER
## Practice location
- **Address:** 200 S MICHIGAN AVE, SUITE 805, Chicago, IL 60604-2402
- **Phone:** (312) 922-3815
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Internal Medicine) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 10, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1679969182) · Data from the CMS NPPES public registry.