Individual provider · Type 1 NPI
Joyce Fivehouse Derby, PhD
Psychologist · Olney, MD
Practice location
2915 Olney Sandy Spring Rd Ste B
Olney, MD 20832-3502
Mailing address
4900 Continental Dr
Olney, MD 20832-2972
Specialties and licenses
| Taxonomy | Code | License |
|---|---|---|
| Clinical Psychologist | 103TC0700X | 03079 (MD) |
| Clinical Child & Adolescent Psychologist | 103TC2200X | 03079 (MD) |
| Psychologist Primary | 103T00000X | 03079 (MD) |
Psychologist: A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustmen…
4 other providers at this address
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About NPI 1538200399
Joyce Fivehouse Derby, PhD's National Provider Identifier is 1538200399, issued on Feb 12, 2007. The primary taxonomy on file is Psychologist (103T00000X), and the practice location is in Olney, MD. The record was last updated on Sep 11, 2025.