Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Harrison and Feldhausen PC

Organization Psychiatric/Mental Health Nurse Practitioner · NPI 1659492494

Harrison and Feldhausen PC is a Psychiatric/Mental Health Nurse Practitioner in Olney, Maryland. Registered with an NPI since 2007.

In the registry since
2007
Specialties on file
2
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

2923 Olney Sandy Spring Rd #E
Olney, MD 20832-1528
Phone: (301) 570-4400
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Clinical Nurse Specialist (primary) Taxonomy 364SP0808X
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X

Record details

NPI number1659492494
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Barbara Harrison — Vice President · (301) 570-4400
NPI enumeratedApril 2, 2007
Last updated in NPPESSeptember 11, 2025
Mailing address2923 Olney Sandy Spring Rd, E, Olney, MD 20832-1528

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