Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jeffrey A Cassidy, MD

Pediatric Orthopaedic Surgery Physician in Grand Rapids, MI · enumerated 2006 · practices at Spectrum Health Primary Care Partners.

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

National Provider Identifier

1316919798

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Registry record

Entity type Individual (Type 1)

Name Jeffrey A Cassidy

Credential MD

Sex Male

Practice address 35 Michigan Ne, Suite 4150, Grand Rapids, MI, 49503

Phone (616) 267-2600

Fax (616) 267-2601

Enumeration date Feb 1, 2006

Last updated in NPPES Feb 22, 2021

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 4301089308 (MI) Secondary

207XP3100X Pediatric Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 4301089308 (MI) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 Jeffrey Cassidy?

The National Provider Identifier (NPI) for Jeffrey Cassidy is 1316919798, a Type 1 (individual) record in the CMS NPPES registry.

Where does Jeffrey Cassidy practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-22.