GREATHOUSE MEDICAL GROUP SC
NPI 1851827349
Clinic/Center - Primary Care in New Lenox, IL
About Greathouse Medical Group Sc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREATHOUSE MEDICAL GROUP SC (NPI 1851827349) is a healthcare organization registered as a primary care in New Lenox, Illinois and active in the NPI registry since May 2017. The organization lists Deirdra Greathouse, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Greathouse Medical Group 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 Greathouse Medical Group Sc, which bills Medicare for the services this clinician delivers.
Clinician (1)
New Lenox, IL 60451
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 Greathouse Medical Group Sc's NPI number?
The NPI number for Greathouse Medical Group Sc is 1851827349. It was assigned to this organization in the NPPES registry on May 4, 2017.
Where is Greathouse Medical Group Sc located?
Greathouse Medical Group Sc is located at 1890 Silver Cross Blvd Ste 550, New Lenox, IL 60451. The listed phone number is (708) 264-8463.
What is Greathouse Medical Group Sc's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Primary Care, with taxonomy code 261QP2300X.
Is Greathouse Medical Group Sc enrolled in Medicare?
Yes. Greathouse Medical Group Sc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Greathouse Medical Group Sc?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Greathouse Medical Group 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.
What insurance does Greathouse Medical Group Sc accept?
Health plans from Ambetter Health list Greathouse Medical Group Sc 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 Greathouse Medical Group Sc was last updated on May 4, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Greathouse Medical Group Sc · NPI 1851827349
Primary Care organization in New Lenox, Illinois. Organization record, active in the CMS NPPES registry since May 4, 2017.
## Identity
- **NPI:** 1851827349 (Entity type: Organization)
- **Enumerated:** May 4, 2017
- **Primary specialty:** Clinic/Center - Primary Care · taxonomy 261QP2300X
- **Organization subpart:** No
- **Authorized official:** Deirdra Greathouse, PRESIDENT
## Practice location
- **Address:** 1890 SILVER CROSS BLVD STE 550, New Lenox, IL 60451-9579
- **Phone:** (708) 264-8463
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Family Practice) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 4, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1851827349) · Data from the CMS NPPES public registry.