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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MICHAEL ARTHUR LEFFLER LMSW
NPI 1679355267
Social Worker - Clinical in Lewisburg, PA

Active since October 18, 2023
1110 W MARKET ST, LEWISBURG, PA 17837(570) 701-5424 Get Directions Write a Review

NPPES record last updated: July 22, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 22, 2026, Oct 18, 2023 (2 updates tracked since 2023).

About Michael Arthur Leffler Lmsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHAEL ARTHUR LEFFLER LMSW (NPI 1679355267) is an individual clinical provider in Lewisburg, Pennsylvania, licensed in Pennsylvania (CW027056) and active in the NPI registry since October 2023.

NPPES Registry Identity

NPI1679355267
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMICHAEL ARTHUR LEFFLERCredential: LMSW
Location Address1110 W MARKET STLewisburg, PA 17837-1370
Mailing Address2524 W Front StBerwick, PA 18603-4112 · (859) 312-1276
Phone(570) 701-5424
Sole ProprietorNo
Enumeration DateOctober 18, 2023
Last NPPES UpdateJuly 22, 20262 updates tracked since enumeration
NPPES CertifiedJuly 22, 2026
✔ NPI 1679355267 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in PA · CW027056
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
1110 W MARKET ST, Lewisburg, PA 17837
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Other Names 1

Professional Name (2)Michael A Leffler Lmsw

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael Leffler's NPI number?

The NPI number for Michael Leffler is 1679355267. It was assigned to this individual provider in the NPPES registry on October 18, 2023. The provider is also known as Michael A Leffler Lmsw.

Where is Michael Leffler located?

Michael Leffler practices at 1110 W Market St, Lewisburg, PA 17837. The listed phone number is (570) 701-5424.

What is Michael Leffler's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for Michael Leffler was last updated on July 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.