GAISER CENTER - Key Persons


Alyssa Vorel

Job Titles:
  • Clinical Coordinator at the Ellen O'Brien
  • Supervisor of Outpatient & Ancillary Programming
Alyssa Vorel is the clinical coordinator at the Ellen O'Brien Gaiser Center. Alyssa provides support to the inpatient and outpatient clinical departments on compliance and client programming needs. Alyssa has worked with individuals struggling with substance use disorders since 2011 in various positions and programs.

Amy Morris

Job Titles:
  • Manager
  • Certified Recovery Specialist
  • Recovery Assistant Manager at Gaiser
Amy Morris is the recovery assistant manager at Gaiser. Amy graduated from Westminster College then obtained her Paralegal Certificate and worked for a Pittsburgh law firm for 11 years. After a hiatus from the workplace, she started at Gaiser in 2019 as a recovery assistant. Amy became a certified recovery specialist and was soon promoted to recovery assistant manager. Amy is proud to support the Gaiser mission to reduce the stigma associated with addiction.

Anna Shuster

Job Titles:
  • Clinical Director
  • Clinical Director at the Ellen O'Brien
Anna Shuster is the clinical director at the Ellen O'Brien Gaiser Center. Anna oversees both inpatient and outpatient programs to ensure quality services and clinical interventions for individuals in treatment. Anna obtained her master's degree in community mental health counseling and is a licensed professional counselor in Pennsylvania.

Ave Jack

Job Titles:
  • Executive Assistant
Ave Jack started her Gaiser career as executive assistant to the director in June 2015. She earned her bachelor's degree in human resource management in 1998 and is a 2017 graduate of Leadership Butler County.

Brandi Maser

Job Titles:
  • Member of the BOARD

Brendan Stinson

Job Titles:
  • Communication & Outreach Specialist
  • Gaiser Team Member
Brendan Stinson is the Communication and Outreach Specialist at the Ellen O'Brien Gaiser Addiction Center. Brendan earned a master's degree in clinical psychology in 2019 and has experience working with adults, teenagers and families who have experienced the disease of addiction.

Butler Eagle

Job Titles:
  • General Manager

C. Thomas Brophy

Job Titles:
  • Medical Director
Dr. C. Thomas Brophy began working with the Gaiser Center in 2019 and serves as medical director for the facility. Dr. Brophy earned a neuroscience degree from the University of Pittsburgh and completed his medical residency at Allegheny General Hospital to become one of the region's only physicians board certified in both addiction medicine and emergency medicine.

Casey Hoak

Job Titles:
  • Outpatient Clinical Lead
Casey Hoak is the outpatient clinical lead for Gaiser. After earning a bachelor's degree in psychology and a master's degree in criminology, Casey began working as a counselor at Gaiser in June 2015. In 2018, she became a certified advanced alcohol and drug counselor and a certified clinical trauma professional..

Chet Garland

Job Titles:
  • Facilities Manager
  • Facilities Coordinator at the Ellen O'Brien
Chet Garland is the facilities coordinator at the Ellen O'Brien Gaiser Center where he also oversees the culinary division. Chet obtained his associate's degree in culinary arts and has been in the culinary field for more than 30 years.

David Hilliard

Job Titles:
  • Member of the BOARD
  • President / President / CEO / Butler County Family YMCA

Donald Bullman

Job Titles:
  • Business Owner
  • Member of the BOARD
  • Secretary

Eva Wright

Job Titles:
  • Lead Analyst / BNY Mellon

Joe Mahoney

Job Titles:
  • Executive Director
Joe Mahoney joined the Gaiser Center as executive director in May 2021, focusing on building partnerships in the Butler Community and creating new programs for the center to address behavioral health needs along with addiction treatment.

John Pistorius

Job Titles:
  • Pastor

Kara Nastasi

Job Titles:
  • HR Manager
  • HR Manager at the Ellen O'Brien
Kara Nastasi is the HR manager at the Ellen O'Brien Gaiser Center. Kara earned her master's degree in organizational leadership from Robert Morris University. With 20 years of experience in management, training, and recruiting roles, Kara is dedicated to helping organizations grow by recruiting top talent, training employees, and retention.

Kathy Bollinger

Job Titles:
  • Nurse
  • Registered Nurse
Kathy Bollinger has been a registered nurse for more than 30 years and has a bachelor's degree in psychology. She came to Gaiser in 2021 and is dedicated to helping clients achieve their recovery goals and become healthier individuals during their recovery journey.

Kesia Jones

Job Titles:
  • Medical Coordinator for the Ellen O'Brien
Kesia Jones serves as the Medical Coordinator for the Ellen O'Brien Gaiser Center. Kesia joined our Medical Team in May of 2022. She has over 30 years of medical experience which include Emergency Room and Medical/Health Education endeavors.

Lou Ann Rosellini

Job Titles:
  • Retired

Marci Gibson

Job Titles:
  • Billing Manager
  • in 2016 As a Billing Specialist
Marci Gibson joined the Gaiser Center in 2016 as a billing specialist. She started working with authorizations when managed care was first introduced and from there moved to the billing side. Marci has more than 25 years of experience in billing and authorizations for both facilities and private practices.

Maria Slaugenhoup

Job Titles:
  • Fiscal Manager
  • Manager of the Ellen O'Brien
  • Member of the Ellen O'Brien Gaiser Center Finance Committee
Maria Slaugenhoup is the fiscal manager of the Ellen O'Brien Gaiser Center. Maria is responsible for the oversight of all accounting processes and ensures the integrity of all accounting records including SAGE accounting software, general ledger and financial statements. Maria is a member of the Ellen O'Brien Gaiser Center Finance Committee. She is a graduate of the Bradford School and Leadership Butler County class of 2011. Maria has devoted 24 years to supporting the mission of the Gaiser Center.

Mark DeBiasio

Job Titles:
  • Member of the Bennett Associates Wealth Management Team
  • Chief Financial Officer / Austin Capital Bank

Martin O'Brien

Job Titles:
  • Board Member Emeritus / Retired Judge

Matthew Schmidt

Job Titles:
  • Business Analyst Specialist / BNY Mellon

Matthew Schnur

Job Titles:
  • Executive Director of Ancillary Services

Pat Casey

Job Titles:
  • Member of the Bennett Associates Wealth Management Team
  • Lawyer

Sherry Lynn

Job Titles:
  • Member of the Bennett Associates Wealth Management Team
  • Owner

Steven D'Achille

Job Titles:
  • Business Owner
  • Member of the Bennett Associates Wealth Management Team

Terri Fuellgraf - VP

Job Titles:
  • Business Owner
  • Member of the BOARD
  • Vice President

Wendy Bennett

Job Titles:
  • Member of the BOARD
  • Treasurer / Senior Financial Advisor / Bennett Associates