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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GERALD E. ZIESEMER PH.D.
NPI 1720021751
Psychologist - Forensic in Fergus Falls, MN

Active since June 14, 2006
126 E ALCOTT AVE, FERGUS FALLS, MN 56537(218) 736-6987(218) 736-0734 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

About Gerald E. Ziesemer Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GERALD E. ZIESEMER PH.D. (NPI 1720021751) is an individual forensic provider in Fergus Falls, Minnesota, licensed in Minnesota (LP0697) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1720021751
Entity TypeIndividualMale
Primary Taxonomy103TF0200X
Provider Legal NameGERALD E. ZIESEMERCredential: PH.D.
Location Address126 E ALCOTT AVEFergus Falls, MN 56537-2903
Mailing Address934 W Linden StFergus Falls, MN 56537-1048
Phone(218) 736-6987
Fax(218) 736-0734
Sole ProprietorNo
Enumeration DateJune 14, 2006
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1720021751 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologist · ForensicBehavioral Health & Social Service Providers
Taxonomy Code103TF0200X
License✔ Licensed in MN · LP0697
Definition
A psychologist whose specialty is characterized by activities primarily intended to provide professional psychological expertise within the judicial and legal systems.
Also ListedPsychologist · ClinicalTaxonomy 103TC0700X · License LP0697 (MN)
126 E ALCOTT AVE, Fergus Falls, MN 56537
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Other Identifiers 4

Other59198ZIMN · Blue Shield Of Minnesota
OtherHP48651MN · Healthpartners
Other104276MN · Ucare Minnesota
Other1042327MN · Preferredone

Other Providers at the Same Location NPPES 12

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BARBARA K. YOUNG M.S.
Counselor
126 E ALCOTT AVE
FERGUS FALLS, MN 56537
Otter Tail County (218) 736-6987
KATHLEEN M SIMPSON CNS
Clinical Nurse Specialist (Psychiatric/Mental Health, Child & Adolescent)
126 E ALCOTT AVE
FERGUS FALLS, MN 56537
Otter Tail County (218) 739-1725
RICARDO P. ASCANO PH.D.
Psychologist (Forensic)
126 E ALCOTT AVE
FERGUS FALLS, MN 56537
Otter Tail County (218) 736-6987
DENNIS D. NIMS MSW
Social Worker (Clinical)
126 E ALCOTT AVE
FERGUS FALLS, MN 56537
Otter Tail County (218) 736-6987
DIANA I. HALL MSW
Social Worker (Clinical)
126 E ALCOTT AVE
FERGUS FALLS, MN 56537
Otter Tail County (218) 736-6987
MARSHA K. KRENZEL-STETSON LADC
Counselor (Addiction (Substance Use Disorder))
126 E ALCOTT AVE
FERGUS FALLS, MN 56537
Otter Tail County (218) 736-6987
MARY K. SCHMIDT PH.D.
Psychologist (Clinical)
126 E ALCOTT AVE
FERGUS FALLS, MN 56537
Otter Tail County (218) 736-6987
DENISE C. WILSON ED.S.
Psychologist
126 E ALCOTT AVE
FERGUS FALLS, MN 56537
Otter Tail County (218) 736-6987

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gerald Ziesemer's NPI number?

The NPI number for Gerald Ziesemer is 1720021751. It was assigned to this individual provider in the NPPES registry on June 14, 2006.

Where is Gerald Ziesemer located?

Gerald Ziesemer practices at 126 E Alcott Ave, Fergus Falls, MN 56537. The listed phone number is (218) 736-6987.

What is Gerald Ziesemer's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Forensic, with taxonomy code 103TF0200X.

When was this NPI record last updated?

The NPPES record for Gerald Ziesemer was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.