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

Mr. Steven Mark Abbadessa, D.O.

Colon & Rectal Surgery Physician in Saint Louis, MO · enumerated 2006.

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

National Provider Identifier

1881668564

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Registry record

Entity type Individual (Type 1)

Name Mr. Steven Mark Abbadessa

Credential D.O.

Sex Male

Practice address Saint Louis, MO, 63141

Phone (314) 966-7570

Fax (314) 966-7788

Enumeration date Feb 17, 2006

Last updated in NPPES Jun 21, 2019

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

Taxonomy & licenses

208C00000X Colon & Rectal Surgery Physician Allopathic & Osteopathic Physicians · License R5J14 (MO) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 Steven Abbadessa?

The National Provider Identifier (NPI) for Steven Abbadessa is 1881668564, a Type 1 (individual) record in the CMS NPPES registry.

Where does Steven Abbadessa practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-06-21.