Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jason Michael Greenfield, MD

Urology Physician in Lone Tree, CO · enumerated 2006 · practices at Advanced Urology, Pllc.

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

National Provider Identifier

1659385268

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Registry record

Entity type Individual (Type 1)

Name Dr. Jason Michael Greenfield

Credential MD

Sex Male

Practice address 10535 Park Meadows Blvd Ste 102, Lone Tree, CO, 80124

Phone (303) 695-6106

Enumeration date Jul 28, 2006

Last updated in NPPES Mar 13, 2025

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License N6881 (TX) Secondary

208800000X Urology Physician Allopathic & Osteopathic Physicians · License DR.0061318 (CO) 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
214829803	Medicaid	TX	-
214829802	Medicaid	TX	-
214829804	Medicaid	TX	-
9000167628	Medicaid	CO	-
214829805	Medicaid	TX	-
214829801	Medicaid	TX	-

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

How do I verify Jason Greenfield's NPI record?

Cross-check NPI 1659385268 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1659385268 active?

Yes, as of the latest NPPES snapshot, NPI 1659385268 is active (record last updated 2025-03-13).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-13.