Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stephen M Desio, M.D.

Sports Medicine (Orthopaedic Surgery) Physician in Worcester, MA · enumerated 2005.

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

National Provider Identifier

1578551933

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen M Desio

Credential M.D.

Sex Male

Practice address 123 Summer St, Suite 520, Worcester, MA, 01608

Phone (508) 363-6363

Fax (508) 363-6366

Enumeration date Oct 11, 2005

Last updated in NPPES May 19, 2025

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 80965 (MA) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 80965 (MA) Secondary

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License 80965 (MA) 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
3137724	Medicaid	MA	-
NX2837	Other	MA	PTAN

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 Desio practice?

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

What is the NPI number for Stephen Desio?

The National Provider Identifier (NPI) for Stephen Desio is 1578551933, 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 2025-05-19.