HARRISON AND FELDHAUSEN PC
NPI 1659492494
Clinical Nurse Specialist - Psychiatric/Mental Health in Olney, MD
NPI Status: Active since April 02, 2007
Contact Information
2923 OLNEY SANDY SPRING RD
#E
OLNEY, MD
ZIP 20832
Phone: (301) 570-4400
- Organization
- Clinical Nurse Specialist
- Psychiatric/Mental Health
About HARRISON AND FELDHAUSEN PC
This page provides the complete NPI Profile along with additional information for Harrison And Feldhausen Pc, a provider established in Olney, Maryland operating as a Clinical Nurse Specialist, focusing in psychiatric/mental health . The healthcare provider is registered in the NPI registry with number 1659492494 assigned on April 2007. The practitioner's primary taxonomy code is 364SP0808X. The provider is registered as an organization and their NPI record was last updated one year ago. Harrison And Feldhausen Pc operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization. The authorized official of this NPI record is Ms. Barbara Ruth Harrison Pmh-np Aprn Bc (Vice President)
- NPI
- 1659492494
- Provider Name
- HARRISON AND FELDHAUSEN PC
- Entity Type
- Organization
- Location Address
- 2923 OLNEY SANDY SPRING RD #E OLNEY, MD 20832
- Location Phone
- (301) 570-4400
- Mailing Address
- 2923 OLNEY SANDY SPRING RD #E OLNEY, MD 20832
- Mailing Phone
- (301) 570-4400
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 04-02-2007
- Last Update Date
- 09-11-2025
- Code Navigator
A Clinical Nurse Specialist (CNS) like Harrison And Feldhausen Pc is a type of advanced practice registered nurse (APRN) that provides direct patient care in various nursing specialties, including pediatrics or psychiatric-mental health. CNSs collaborate with other nurses and medical professionals to improve patient care quality. CNSs are often positioned in leadership roles where they may provide education and mentorship to other nursing personnel. Additionally, CNSs may also conduct research and advocate for certain healthcare policies.
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Clinical Nurse Specialist Psychiatric/Mental Health
- Taxonomy Code
- 364SP0808X
- Type
- Physician Assistants & Advanced Practice Nursing Providers
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 363LP0808X | Physician Assistants & Advanced Practice Nursing Providers | Nurse Practitioner |
Group Taxonomy 193200000X MULTI-SPECIALTY GROUP
This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1659492494, we treat the final digit (4) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 76. The final step is to find the difference between that total and the next multiple of ten (80 - 76 = 4).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 76 is 80. The difference is the calculated check digit.
Other Providers at the Same Location
The following 6 providers are registered at the same or a nearby location.
OLNEY, MD 20832
OLNEY, MD 20832
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1659492494, enumerated as an "organization" on April 02, 2007.
The provider is located at 2923 OLNEY SANDY SPRING RD #E OLNEY, MD 20832 and the phone number is (301) 570-4400.
Clinical Nurse Specialist with taxonomy code 364SP0808X and a focus in Psychiatric/Mental Health.
