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

Karen Ann Prahler, CRNP

Family Nurse Practitioner in Prince Frederick, MD · enumerated 2020.

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

National Provider Identifier

1578166492

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Registry record

Entity type Individual (Type 1)

Name Karen Ann Prahler

Credential CRNP

Sex Female

Practice address Prince Frederick, MD, 20678

Phone (570) 556-8588

Enumeration date Nov 21, 2020

Last updated in NPPES Dec 15, 2022

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

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R234785 (MD) Primary

163W00000X Registered Nurse Nursing Service Providers · License 1165256 (KY) Secondary

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 Karen Prahler?

The National Provider Identifier (NPI) for Karen Prahler is 1578166492, a Type 1 (individual) record in the CMS NPPES registry.

Where does Karen Prahler practice?

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

Other providers at this practice address

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James Carson Orthopaedic Surgery Physician · Prince Frederick, MD NPI 1780978775 Statcare Group, LLC Urgent Care Clinic/Center · Prince Frederick, MD NPI 1780156455 Lisa Watson Acute Care Nurse Practitioner · Prince Frederick, MD NPI 1396206678 Fahad Rahman Foot & Ankle Surgery Podiatrist · Prince Frederick, MD NPI 1255072534 Calverthealth Medical Group, LLC Orthopaedic Surgery Physician · Prince Frederick, MD NPI 1528880523 Calverthealth Medical Group, LLC Prosthetic/Orthotic Supplier · Prince Frederick, MD NPI 1598581084

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-15.