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

Dr. Douglas Nelson Callen, PHD

Individual provider Audiologist-Hearing Aid Fitter · NPI 1043217128

Dr. Douglas Nelson Callen, PHD is an Audiologist-Hearing Aid Fitter in Kittanning, Pennsylvania. Practices as a sole proprietor. Licensed in Pennsylvania.

Licensed in
PA
In the registry since
2005
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

200 S Water St
Kittanning, PA 16201-2437
Phone: (724) 548-4455
Fax: (724) 543-4491
Show map & directions

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

Specialties & licences

Audiologist-Hearing Aid Fitter (primary) Taxonomy 237600000X · Licence AT000075L (PA)

Record details

NPI number1043217128
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJuly 5, 2005
Last updated in NPPESApril 12, 2012
Mailing address200 S Water St, Kittanning, PA 16201-2437

Other providers in Kittanning