THOMAS LEO DIANA (PH.D.) – Health Service Psychologist, NPI 1093874281

THOMAS LEO DIANA (PH.D.) is a healthcare provider. based in Winona, Minnesota. specializing in Health Service Psychologist. They hold the professional credentials PH.D.. They hold a License No. LP1219 (MN). The NPI Number for THOMAS LEO DIANA (PH.D.) is 1093874281

Main info

Male
36 Years Of Experience
Accepts Medicare Assignment
Name
THOMAS LEO DIANA (PH.D.)
NPI
1093874281
Phone
(507) 452-1021
Address
66 E 3RD ST
Enumeration Date
6 December 2006
Last Update Date
22 January 2010

Doctor Profile

Medical School Name
OTHER
Secondary Phone
5072892089
Graduation Year
1990 (36 years ago)
PAC ID
0648365643
Group Practice PAC ID
7810961703
Professional Enrollment ID
I20071005000483
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience52
Completeness75
Years active:19State licenses:1Digital endpointsOther names

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Provider Addresses for THOMAS LEO DIANA (PH.D.)

  • 66, East 3rd Street, Winona, Winona County, Minnesota, 55987, United States

    WINONA, MN 559873478

    Phone: (507) 452-1021

    Fax: (507) 452-1504

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 55987)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 7810961703View full group profile
NameSpecialtyState
Clinical Social WorkerMN
Clinical Social WorkerMN
Clinical Social WorkerMN
Clinical Social WorkerMN
Mental Health CounselorMN
-MN
Clinical Social WorkerMN
Mental Health CounselorMN
Psychiatry, NeurologySD
Internal MedicineMN

Reviews

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Frequently asked questions

How do payers reference THOMAS LEO DIANA (PH.D.)?
For THOMAS LEO DIANA (PH.D.), use NPI 1093874281 as the unique 10-digit identifier.
Active or inactive — what applies to THOMAS LEO DIANA (PH.D.)?
You should see THOMAS LEO DIANA (PH.D.) as active in CMS-hosted NPPES data.
How would a patient describe THOMAS LEO DIANA (PH.D.)'s focus?
For THOMAS LEO DIANA (PH.D.), the primary taxonomy reads as Health Service Psychologist. Clinical services aligned with this taxonomy classification.
What practice footprint exists for THOMAS LEO DIANA (PH.D.)?
Travel planning: use Winona, Minnesota as the reference point for THOMAS LEO DIANA (PH.D.), then confirm.
Can I trust this NPI listing for THOMAS LEO DIANA (PH.D.)?
The listing is sourced from the national NPI registry. If something looks off, compare with NPPES and the clinic's website.

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