Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark David Theriault, PHARMD
Pharmacist in New Haven, CT · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1144359894
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark David Theriault
Credential PHARMD
Sex Male
Practice address 17 Hillhouse Ave, New Haven, CT, 06520
Phone (203) 432-2885
Enumeration date Mar 5, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy.
About the PHARMD 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
What is the NPI number for Mark Theriault?
The National Provider Identifier (NPI) for Mark Theriault is 1144359894, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Theriault practice?
The practice location on file with NPPES is in New Haven, CT. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.