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

Dr. John Madden, PHD

Individual provider Audiologist · NPI 1437222452

Dr. John Madden, PHD is an Audiologist in Grand Forks, North Dakota. Licensed in North Dakota. Registered with an NPI since 2006.

Licensed in
ND
In the registry since
2006
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

290 Centennial Dr Stop 8040 Montgomery Hall Rm 101
Grand Forks, ND 58202-8040
Phone: (701) 777-3728
Show map & directions

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

Specialties & licences

Audiologist (primary) Taxonomy 231H00000X · Licence 569 (ND)

Record details

NPI number1437222452
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedNovember 16, 2006
Last updated in NPPESJuly 8, 2007
Mailing address290 Centennial Dr Stop 8040, Montgomery Hall Room 101, Grand Forks, ND 58202-8040

Other providers in Grand Forks