Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Cory L Conniff, MD

Q: What is the NPI number for Cory Conniff?

The National Provider Identifier (NPI) for Cory Conniff is 1376539726, a Type 1 (individual) record in the CMS NPPES registry.

Rheumatology Physician in Orland Park, IL · enumerated 2005.

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

National Provider Identifier

1376539726

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Registry record

Entity type Individual (Type 1)

Name Dr. Cory L Conniff

Credential MD

Sex Male

Practice address Orland Park, IL, 60467

Phone (630) 339-5300

Fax (630) 339-5305

Enumeration date Sep 21, 2005

Last updated in NPPES Nov 4, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 036-107529 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
036-107-529	Medicaid	IL	-

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 is the NPI number for Cory Conniff?

The National Provider Identifier (NPI) for Cory Conniff is 1376539726, a Type 1 (individual) record in the CMS NPPES registry.

Where does Cory Conniff practice?

The practice location on file with NPPES is in Orland Park, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-04.