Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Jacob Thomas Mahr, PHARMD
Pharmacist in Janesville, WI · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1235615378
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Registry record
Entity type Individual (Type 1)
Name Jacob Thomas Mahr
Credential PHARMD
Sex Male
Practice address 1501 Creston Park Dr, Janesville, WI, 53545
Phone (608) 752-7431
Enumeration date Jul 12, 2018
Last updated in NPPES Jul 12, 2018
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 Jacob Mahr?
The National Provider Identifier (NPI) for Jacob Mahr is 1235615378, a Type 1 (individual) record in the CMS NPPES registry.
Where does Jacob Mahr practice?
The practice location on file with NPPES is in Janesville, WI. 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 2018-07-12.