Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stephen Howard Montaldi, D.O.

Sports Medicine (Internal Medicine) Physician in New Castle, IN · enumerated 2006.

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

National Provider Identifier

1255446399

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen Howard Montaldi

Credential D.O.

Sex Male

Practice address 1007 N 16th St, New Castle, IN, 47362

Phone (765) 529-0780

Fax (765) 529-3554

Enumeration date Aug 20, 2006

Last updated in NPPES Jan 27, 2010

Taxonomy & licenses

207RS0010X Sports Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License OS7171 (FL) Secondary

207RS0010X Sports Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 002003452 (IN) 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

Other identifiers

Identifier	Type	State	Issuer
200926520	Medicaid	IN	-

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 Stephen Montaldi practice?

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

What is the NPI number for Stephen Montaldi?

The National Provider Identifier (NPI) for Stephen Montaldi is 1255446399, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-27.