Harrison and Feldhausen PC
NPI 1659492494 · Psychiatric/Mental Health Clinical Nurse Specialist · Olney, MD
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Harrison and Feldhausen PC is a Psychiatric/Mental Health Clinical Nurse Specialist organization in Olney, MD (NPI 1659492494).
Provider details
- NPI number
- 1659492494
- Entity type
- Organization
- Primary specialty
- Psychiatric/Mental Health Clinical Nurse SpecialistPhysician Assistants & Advanced Practice Nursing Providers
- Organization subpart
- No
- Authorized official
- Barbara Harrison, Vice President(301) 570-4400
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-02
- Last updated
- 2025-09-11
Frequently asked questions
- What is Harrison and Feldhausen PC's NPI number?
- Harrison and Feldhausen PC's National Provider Identifier (NPI) is 1659492494, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Harrison and Feldhausen PC?
- Harrison and Feldhausen PC is classified in the NPPES registry as Psychiatric/Mental Health Clinical Nurse Specialist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Harrison and Feldhausen PC located?
- Harrison and Feldhausen PC's practice location on file with NPPES is 2923 Olney Sandy Spring Rd, Olney, MD 20832-1528.
- What is Harrison and Feldhausen PC's phone number?
- The practice phone number listed in the NPPES registry for Harrison and Feldhausen PC is (301) 570-4400.
- Does Harrison and Feldhausen PC accept Medicare?
- Harrison and Feldhausen PC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Harrison and Feldhausen PC?
- The authorized official listed on Harrison and Feldhausen PC's NPPES record is Barbara Harrison, Vice President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Harrison and Feldhausen PC's NPI active?
- Yes — Harrison and Feldhausen PC's NPI (1659492494) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.