Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Derek Lavoie, PSY.D.
Psychologist in Nashua, NH · enumerated 2023.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1942075155
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Registry record
Entity type Individual (Type 1)
Name Dr. Derek Lavoie
Credential PSY.D.
Sex Male
Practice address 39 Simon St Ste 5, Nashua, NH, 03060
Phone (603) 889-8648
Enumeration date Nov 17, 2023
Last updated in NPPES Nov 17, 2023
Taxonomy & licenses
PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice.
About the PSYD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Derek Lavoie?
Derek Lavoie is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Christine Isabelle Psychiatric/Mental Health Nurse Practitioner · Nashua, NH NPI 1992778427 Jeanne Courtright Clinical Psychologist · Nashua, NH NPI 1982777934 Dominique Beaulieu Psychologist · Nashua, NH NPI 1316215189 Geraldine Callahan Nurse Practitioner · Nashua, NH NPI 1669865473 Erica Cote Mental Health Counselor · Nashua, NH NPI 1568284834
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-17.