Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mr. David Dean Helkenn, RPH

Individual provider Pharmacist · NPI 1518248517

Mr. David Dean Helkenn, RPH is a Pharmacist in Watertown, South Dakota. Practices as a sole proprietor. Licensed in Arizona and South Dakota.

Licensed in
AZ, SD
In the registry since
2011
Specialties on file
2
What do these letters mean?
RPH — Registered Pharmacist
A pharmacist licensed by a state board.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1320 9th Ave SE
Watertown, SD 57201-5355
Phone: (605) 886-0661
Fax: (605) 886-0721
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pharmacist (primary) Taxonomy 183500000X · Licence S018343 (AZ)
Pharmacist Taxonomy 183500000X · Licence 4417 (SD)

Record details

NPI number1518248517
Entity typeIndividual (Type 1)
GenderMale
Credentials RPH
Sole proprietorYes
NPI enumeratedSeptember 2, 2011
Last updated in NPPESSeptember 2, 2011

Other providers in Watertown