Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Mary Hylton, PHD

Psychologist in Williamsport, PA · enumerated 2015.

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

National Provider Identifier

1841688231

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Registry record

Entity type Individual (Type 1)

Name Margaret Mary Hylton

Credential PHD

Sex Female

Practice address 1100 Grampian Blvd, Williamsport, PA, 17701

Phone (570) 320-7525

Fax (570) 320-7484

Enumeration date Jan 7, 2015

Last updated in NPPES Jan 7, 2015

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PS017767 (PA) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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

Where does Margaret Hylton practice?

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

What is the NPI number for Margaret Hylton?

The National Provider Identifier (NPI) for Margaret Hylton is 1841688231, 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 2015-01-07.