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

Thomas Leo Diana, PHD

Individual provider Health Service Psychologist · NPI 1093874281

Thomas Leo Diana, PHD is a Health Service Psychologist in Winona, Minnesota. Licensed in Minnesota. Registered with an NPI since 2006.

Licensed in
MN
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

66 E 3rd St
Winona, MN 55987-3478
Phone: (507) 452-1021
Fax: (507) 452-1504
Show map & directions

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

Specialties & licences

Health Service Psychologist (primary) Taxonomy 103TH0100X · Licence LP1219 (MN)

Record details

NPI number1093874281
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedDecember 6, 2006
Last updated in NPPESJanuary 22, 2010
Mailing address66 E 3rd St, Winona, MN 55987-3478