Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory James Schleis, MD

Endocrinology, Diabetes & Metabolism Physician in Avon, CO · enumerated 2016 · practices at Colorado Mountain Medical, LLC.

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

National Provider Identifier

1154783207

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Registry record

Entity type Individual (Type 1)

Name Gregory James Schleis

Credential MD

Sex Male

Practice address 50 Buck Creek Rd Ste 300, Avon, CO, 81620

Phone (970) 926-6340

Fax (970) 926-6348

Enumeration date Mar 27, 2016

Last updated in NPPES Jul 10, 2026

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License CDR.0007037 (CO) Primary

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 85787 (SC) Secondary

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
857870	Medicaid	SC	-

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

Where does Gregory Schleis practice?

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

What is the NPI number for Gregory Schleis?

The National Provider Identifier (NPI) for Gregory Schleis is 1154783207, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Regan Pyle Allergy Physician · Avon, CO NPI 1992977896 Colorado Mountain Medical, LLC Multi-Specialty Clinic/Center · Avon, CO NPI 1376252502

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-10.