Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Muriel O'Neil, DPT

Physical Therapist in Lansing, MI · enumerated 2023.

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

National Provider Identifier

1831978642

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Registry record

Entity type Individual (Type 1)

Name Margaret Muriel O'Neil

Credential DPT

Sex Female

Practice address 5849 W Saginaw Hwy, Lansing, MI, 48917

Phone (517) 827-8644

Fax (517) 323-4935

Enumeration date Sep 22, 2023

Last updated in NPPES Sep 28, 2023

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 5501302624 (MI) Primary

DPT · Doctor of Physical Therapy: A physical therapist holding the clinical doctorate now standard for the profession. About the DPT 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 Margaret O'Neil?

The National Provider Identifier (NPI) for Margaret O'Neil is 1831978642, a Type 1 (individual) record in the CMS NPPES registry.

Where does Margaret O'Neil practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-28.