Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Attilio Bruce Catanzano, MD

Psychiatry Physician in Boulder, CO · enumerated 2008.

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

National Provider Identifier

1518139591

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Registry record

Entity type Individual (Type 1)

Name Attilio Bruce Catanzano

Credential MD

Sex Male

Practice address 255 Canyon Blvd, Boulder, CO, 80302

Phone (303) 449-7541

Fax (303) 449-8973

Enumeration date Mar 30, 2008

Last updated in NPPES Dec 29, 2008

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 21511 (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
04141040	Medicaid	CO	-

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 Attilio Catanzano practice?

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

What is the NPI number for Attilio Catanzano?

The National Provider Identifier (NPI) for Attilio Catanzano is 1518139591, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-12-29.