Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert E Irwin, OTR/L

Q: What is the NPI number for Robert Irwin?

The National Provider Identifier (NPI) for Robert Irwin is 1851354963, a Type 1 (individual) record in the CMS NPPES registry.

Hand Occupational Therapist in Mars, PA · enumerated 2006.

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

National Provider Identifier

1851354963

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Registry record

Entity type Individual (Type 1)

Name Robert E Irwin

Credential OTR/L

Sex Male

Practice address 6998 Crider Rd, Suite 200, Mars, PA, 16046

Phone (724) 778-3311

Fax (724) 779-3313

Enumeration date Apr 10, 2006

Last updated in NPPES Jun 29, 2012

Taxonomy & licenses

225XH1200X Hand Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License OC001327L (PA) Primary

Other identifiers

Identifier	Type	State	Issuer
852850	Other	PA	BLUE CROSS/BLUE SHIELD

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 Robert Irwin practice?

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

What is the NPI number for Robert Irwin?

The National Provider Identifier (NPI) for Robert Irwin is 1851354963, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Scott Szabo Orthopaedic Surgery Physician · Mars, PA NPI 1194729160 Halee Onder Medical Physician Assistant · Mars, PA NPI 1508851312 Hugo Pfaeffle Orthopaedic Hand Surgery Physician · Mars, PA NPI 1609841139 Magdalena Liebe Family Medicine Physician · Mars, PA NPI 1588622427 Medexpress Urgent Care, LLC - Adams Township Urgent Care Clinic/Center · Mars, PA NPI 1235227422 Tri Rivers Surgical Associates, Inc. Orthopaedic Surgery Physician · Mars, PA NPI 1326104761 Francis Savannah Family Nurse Practitioner · Mars, PA NPI 1205042371 Dane Sink Physician Assistant · Mars, PA NPI 1891972790

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-29.