William Mattheisen

Current agency: Hennepin Co. Sheriff's OfficeMinneapolis, MN

Combined career data aggregated across all known agencies.

1Agencies

--Current Salary

0 / 0Civil Casesactive / total

--Liability Costs

--Arrests

0Reports

Licenses & certification

Licenses issued to this individual by a licensing authority.

Peace Officer

Status: Active
First awarded: Jun 3, 2023
Issued by: MN POST

Education & training

Recorded courses, newest completion dates first.

Annual Rifle Qualification

Completed: Jun 18, 2026
Credits: 2
Sponsor: Hennepin Co. Sheriff's Office - SP02700
Instructor: Sgt Cory Mclouden, Sgt Erik Fleck

Procedural Justice and Police Legitimacy

Completed: Mar 5, 2026
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: Bill Everett, Anna Yunker

Spring Handgun & Use of Force

Completed: Mar 2, 2026
Credits: 4
Sponsor: Hennepin Co. Sheriff's Office - SP02700
Instructor: Fleck, Manson

Mental Health Part 4 - Intervention

Completed: Jan 30, 2026
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (LMCIT))

Implicit Bias Part 2

Completed: Jan 30, 2026
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: William J. Everett, Anna L. Yunker

Extreme Risk Protection Orders

Completed: Jan 30, 2026
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Consent Searches

Completed: Jan 30, 2026
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631

Arrest Warrants

Completed: Jan 30, 2026
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Mental Health Part 3 - Assessment

Completed: Jan 30, 2026
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (LMCIT))

Serving Those with Autism Spectrum Disorder - Part 3

Completed: Jan 29, 2026
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631

Serving Those with Autism Spectrum Disorder - Part 2

Completed: Jan 29, 2026
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: Bill Everett, Anna Yunker

Serving Those with Autism Spectrum Disorder - Part 4

Completed: Jan 29, 2026
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631

Serving Those with Autism Spectrum Disorder - Part 1

Completed: Jan 29, 2026
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631

Crimes Motivated by Bias

Completed: Jan 28, 2026
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Fall Handgun and Use of Force In-service

Completed: Dec 4, 2025
Credits: 4
Sponsor: Hennepin Co. Sheriff's Office - SP02700
Instructor: Sgt. Erik Fleck, Sgt. Cory Mclouden, Sgt. Chris Jung, Sgt. Devan McNamara

Crimes Motivated by Bias

Completed: Nov 27, 2025
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

EVOC

Completed: Oct 3, 2025
Credits: 8
Sponsor: Precision Driving Center of Minnesota - SP09067
Instructor: Greg Newinski, Mark Bromwneshenkel

Initial Rifle Operator Course

Completed: Aug 8, 2025
Credits: 16
Sponsor: Hennepin Co. Sheriff's Office - SP02700
Instructor: Erick Fleck

Crisis Intervention Team, CIT, Training day 3 of 5

Completed: Jun 18, 2025
Credits: 8
Sponsor: The Barbara Schneider Foundation - SP10233
Instructor: The Barbara Schneider Foundation

Crisis Intervention Team, CIT, Training day 2 of 5

Completed: Jun 17, 2025
Credits: 8
Sponsor: The Barbara Schneider Foundation - SP10233
Instructor: The Barbara Schneider Foundation

Crisis Intervention Team, CIT, Training Day 1

Completed: Jun 16, 2025
Credits: 8
Sponsor: The Barbara Schneider Foundation - SP10233
Instructor: The Barbara Schneider Foundation

Initial Narcan

Completed: May 30, 2025
Credits: 3
Sponsor: Hennepin County Medical Center, EMS - SP09024
Instructor: Hennepin County Medical Center, EMS

New Deputy Firearms Orientation – No Rifle

Completed: May 14, 2025
Credits: 32
Sponsor: Hennepin Co. Sheriff's Office - SP02700
Instructor: Hennepin Co. Sheriffs Office

Annual Use of Force Training In-Service 2023

Completed: Oct 14, 2024
Credits: 8
Sponsor: Maplewood Police Dept. - SP06204
Instructor: Maplewood Police Dept.

Reload and Malfunction Live Fire Range

Completed: Sep 18, 2024
Credits: 3
Sponsor: Maplewood Police Dept. - SP06204
Instructor: Maplewood Police Dept.

Room Clearing/Shield Simunition Range

Completed: Aug 22, 2024
Credits: 2
Sponsor: Maplewood Police Dept. - SP06204
Instructor: Maplewood Police Dept.

Duty to Intercede

Completed: Jul 15, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (LMCIT))

SFST-Standardized Field Sobriety Testing Initial 2 day

Completed: Jul 9, 2024
Credits: 16
Sponsor: Minnesota State Patrol - SP00003
Instructor: Minnesota State Patrol

Shooting Around Vehicles/Subject Control and Extraction from Vehicles

Completed: Jun 24, 2024
Credits: 4
Sponsor: Maplewood Police Dept. - SP06204
Instructor: Maplewood Police Dept.

New Officers Firearms, Less Lethal, Verbal De-Escalation, Handcuffing Training

Completed: May 17, 2024
Credits: 40
Sponsor: Maplewood Police Dept. - SP06204
Instructor: Maplewood Police Dept.

Active Shooter/Building Clearing

Completed: May 16, 2024
Credits: 3
Sponsor: Maplewood Police Dept. - SP06204
Instructor: Maplewood Police Dept.

Lead Awareness

Completed: Feb 1, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Portable Fire Extinguishers

Completed: Feb 1, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Personal Protective Equipment

Completed: Feb 1, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Hearing Conservation

Completed: Feb 1, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Respiratory Protection for Law Enforcement

Completed: Feb 1, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Hazardous Materials Awareness - Level 1 Part 2

Completed: Jan 31, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Hazardous Materials Awareness - Level 1 Part 1

Completed: Jan 31, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Use of Force Part 3: Readiness

Completed: Jan 30, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Bloodborne Pathogens

Completed: Jan 30, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Use of Force Part 2: Law and Principles

Completed: Jan 30, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Use of Force Part 1: Laws and Priciples

Completed: Jan 30, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

AWAIR and Employee Right-to-Know

Completed: Jan 30, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Narcan Carry and Use

Completed: Jan 11, 2024
Credits: 1
Sponsor: League Of Minnesota Cities Insurance Trust (LMCIT)) - SP09631
Instructor: League Of Minnesota Cities Insurance Trust (Lmc)

Annual Use of Force Training

Completed: Nov 9, 2023
Credits: 8
Sponsor: St. Louis Park Police Dept. - SP02721
Instructor: St. Louis Park Police Dept.

Civil Cases

Cases connected through agency assignments.

Agencies

Known agency assignments linked to this profile.

Agency	Role	License	Start Date	End Date	Status
Hennepin Co. Sheriff's Office	Peace Officer	Peace Officer	Jun 3, 2023	Present	Active