Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Justin Lee Mast, PHARM.D.
Pharmacist in Mount Gilead, OH · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659668432
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Registry record
Entity type Individual (Type 1)
Name Justin Lee Mast
Credential PHARM.D.
Sex Male
Practice address 510 W Marion Rd, Mount Gilead, OH, 43338
Phone (419) 947-8515
Enumeration date Jun 30, 2011
Last updated in NPPES Jun 30, 2011
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 Justin Mast?
The National Provider Identifier (NPI) for Justin Mast is 1659668432, a Type 1 (individual) record in the CMS NPPES registry.
Where does Justin Mast practice?
The practice location on file with NPPES is in Mount Gilead, OH. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-30.