Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Greathouse Medical Group Sc

Q: What type of organization is Greathouse Medical Group Sc?

Greathouse Medical Group Sc is registered in NPPES as a Primary Care Clinic/Center (its primary provider taxonomy).

Primary Care Clinic/Center in New Lenox, IL · enumerated 2017 · authorized official Deirdra Greathouse, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1851827349

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Greathouse Medical Group Sc

Practice address 1890 Silver Cross Blvd Ste 550, New Lenox, IL, 60451

Phone (708) 264-8463

Enumeration date May 4, 2017

Last updated in NPPES May 4, 2017

Taxonomy & classification

261QP2300X Primary Care Clinic/Center Ambulatory Health Care Facilities · License 036114405 (IL) Primary

Authorized official

Name Deirdra Greathouse

Title President

Phone (708) 264-8463

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is Greathouse Medical Group Sc?

Greathouse Medical Group Sc is registered in NPPES as a Primary Care Clinic/Center (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-05-04.