NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Harrison and Feldhausen PC

Psychiatric/Mental Health Clinical Nurse Specialist in Olney, MD · enumerated 2007 · authorized official Barbara Harrison, Vice President.

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

National Provider Identifier

1659492494

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Harrison and Feldhausen PC
Practice address 2923 Olney Sandy Spring Rd, #E, Olney, MD, 20832
Phone (301) 570-4400
Enumeration date Apr 2, 2007
Last updated in NPPES Sep 11, 2025

Taxonomy & classification

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary
364SP0808X Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers Primary

Authorized official

Name Barbara Harrison
Title Vice President
Phone (301) 570-4400

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 is Harrison and Feldhausen PC located?
The practice location on file with NPPES is in Olney, MD.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2025-09-11. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.