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

Dr. Joseph Vincent Lillis, M.D.

Dermatology Physician in Fort Collins, CO · enumerated 2008.

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

National Provider Identifier

1225213432

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Registry record

Entity type Individual (Type 1)

Name Dr. Joseph Vincent Lillis

Credential M.D.

Sex Male

Practice address Fort Collins, CO, 80525

Phone (970) 305-4341

Fax (970) 482-9948

Enumeration date Jan 7, 2008

Last updated in NPPES Feb 15, 2023

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

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License LL16967 (OR) Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License A109366 (CA) Secondary

207NS0135X Procedural Dermatology Physician Allopathic & Osteopathic Physicians · License 47867 (CO) Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License DR.0047867 (CO) Primary

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

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 Joseph Lillis?

The National Provider Identifier (NPI) for Joseph Lillis is 1225213432, a Type 1 (individual) record in the CMS NPPES registry.

Where does Joseph Lillis practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-02-15.