Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Lydia M. Seibert, P.T.

Physical Therapist in Clayton, MO · enumerated 2007.

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

National Provider Identifier

1124247036

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Registry record

Entity type Individual (Type 1)

Name Mrs. Lydia M. Seibert

Credential P.T.

Sex Female

Practice address 950 Francis Pl, Clayton, MO, 63105

Phone (314) 726-1186

Fax (314) 726-0176

Enumeration date Apr 25, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 01088 (MO) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT 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 Lydia Seibert?

The National Provider Identifier (NPI) for Lydia Seibert is 1124247036, a Type 1 (individual) record in the CMS NPPES registry.

Where does Lydia Seibert practice?

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

Other providers at this practice address

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Walter Kistler Internal Medicine Physician · Saint Louis, MO NPI 1922005834 Jeffrey Aschenbrenner Foot & Ankle Surgery Podiatrist · Saint Louis, MO NPI 1528060191 Richard Brandel Podiatrist · Saint Louis, MO NPI 1154323657 Michael Hoffmann Dental Anesthesiology · Saint Louis, MO NPI 1558358176 Specialists in Internal Medicine, PC Internal Medicine Physician · Clayton, MO NPI 1023096187 Melvin Butler Internal Medicine Physician · Clayton, MO NPI 1841278850 David Mason Phd PC Audiologist · Clayton, MO NPI 1043244650 Michael J. Hoffmann D.D.S. General Practice Dentistry · Saint Louis, MO NPI 1063426658

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.