Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stephen Michael Cattaneo II, M.D.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Annapolis, MD · enumerated 2007.

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

National Provider Identifier

1356491450

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen Michael Cattaneo II

Credential M.D.

Sex Male

Practice address 2003 Medical Pkwy, Suite 301, Annapolis, MD, 21401

Phone (443) 481-3300

Enumeration date Jan 11, 2007

Last updated in NPPES Nov 29, 2013

Taxonomy & licenses

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License D0055731 (MD) 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
1884038	Other	-	AETNA HMO
K6410004	Other	-	BCBS DC
013961100	Medicaid	MD	-
89945002	Other	-	BCBS MD
9106181	Other	-	AETNA PPO

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.

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Frequently asked questions

What is the NPI number for Stephen Cattaneo?

The National Provider Identifier (NPI) for Stephen Cattaneo is 1356491450, a Type 1 (individual) record in the CMS NPPES registry.

Where does Stephen Cattaneo practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-11-29.