Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Katherine Anne Langrehr

Mental Health Counselor in Perry Hall, MD · enumerated 2021.

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

National Provider Identifier

1629640735

Verified

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Registry record

Entity type Individual (Type 1)

Name Katherine Anne Langrehr

Sex Female

Practice address Perry Hall, MD, 21128

Phone (443) 752-9647

Enumeration date Jul 16, 2021

Last updated in NPPES Jul 7, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License LC14874 (MD) Primary

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 Katherine Langrehr practice?

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

What is the NPI number for Katherine Langrehr?

The National Provider Identifier (NPI) for Katherine Langrehr is 1629640735, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-07.