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HARRISON AND FELDHAUSEN PC
NPI 1659492494
Clinical Nurse Specialist - Psychiatric/Mental Health in Olney, MD

Active since April 02, 2007
2923 OLNEY SANDY SPRING RD, #E, OLNEY, MD 20832(301) 570-4400 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Sep 11, 2025, Aug 22, 2020 (2 updates tracked since 2020).

About Harrison And Feldhausen Pc NPPES

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

HARRISON AND FELDHAUSEN PC (NPI 1659492494) is a healthcare organization registered as a psychiatric/mental health in Olney, Maryland and active in the NPI registry since April 2007. The organization lists Barbara Ruth Harrison, Vice President, as its authorized official.

NPPES Registry Identity

NPI1659492494
Entity TypeOrganization
Primary Taxonomy364SP0808X
Legal Business NameHARRISON AND FELDHAUSEN PC
Location Address2923 OLNEY SANDY SPRING RD, #EOlney, MD 20832-1528
Mailing Address2923 Olney Sandy Spring Rd, #eOlney, MD 20832-1528 · (301) 570-4400
Phone(301) 570-4400
Organization SubpartNo
Authorized OfficialBarbara Ruth HarrisonVice President · (301) 570-4400
Enumeration DateApril 2, 2007
Last NPPES UpdateSeptember 11, 20252 updates tracked since enumeration
✔ NPI 1659492494 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinical Nurse Specialist · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code364SP0808X
Also ListedNurse Practitioner · Psychiatric/Mental HealthTaxonomy 363LP0808X
2923 OLNEY SANDY SPRING RD, Olney, MD 20832
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JEREMI J ARROYO D.D.S.
Dentist (General Practice)
2923 OLNEY SANDY SPRING RD, SUITE D
OLNEY, MD 20832
Montgomery County (301) 924-5500
JACQUELINE W EISEN D.D.S.
Dentist
2923 OLNEY SANDY SPRING RD
OLNEY, MD 20832
Montgomery County (301) 924-5500
MS. KAREN D GORDON LCSWC
Social Worker (Clinical)
2923 OLNEY SANDY SPRING RD, #E
OLNEY, MD 20832
Montgomery County (301) 924-5475
HOUSE OF HOPE MARYLAND
Voluntary or Charitable
2923 OLNEY SANDY SPRING RD, C
OLNEY, MD 20832
Montgomery County (301) 452-7252
ONE WAY MEDICAL, LLC
Durable Medical Equipment & Medical Supplies
2923 OLNEY SANDY SPRING RD, SUITE C
OLNEY, MD 20832
Montgomery County (301) 774-8200
MS. JON WINTER M.A.
Marriage & Family Therapist
2923 OLNEY SANDY SPRING RD, SUITE C
OLNEY, MD 20832
Montgomery County (301) 774-3305

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 Harrison And Feldhausen PC's NPI number?

The NPI number for Harrison And Feldhausen PC is 1659492494. It was assigned to this organization in the NPPES registry on April 2, 2007.

Where is Harrison And Feldhausen PC located?

Harrison And Feldhausen PC is located at 2923 Olney Sandy Spring Rd #e, Olney, MD 20832. The listed phone number is (301) 570-4400.

What is Harrison And Feldhausen PC's specialty?

The primary specialty registered for this NPI is Clinical Nurse Specialist, specializing in Psychiatric/Mental Health, with taxonomy code 364SP0808X.

When was this NPI record last updated?

The NPPES record for Harrison And Feldhausen PC was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.