Meet the Team

Nikki Koppel

Director of Residence Life at Summit Campus


  • Director of Residence Life Summit Campus Worcester, MA


  • Director of Special Events Worcester Railers HC, Worcester, MA

  • President & Independent Consultant Outside the Box Advisors, Inc., Delray Beach, FL

  • Job Coach & Community Based Instruction Coordinator Palm Beach School for Autism, Lake Worth, FL

  • Teacher Palm Beach School for Autism, Lake Worth, FL


  • School District Palm Beach County ASD Endorsement To be Awarded in 01/2022

  • Bachelor of Arts Theater Hunter College of The City University of New York New York, NY 05/1984

  • Professional Certification in Elementary Education, ESE, Drama, Florida

  • Professional Crisis Management Certified, 2016-present

  • Cornell University Food and Beverage Certificate November 2020

Professional Activities:

  • Florida Division on Career and Transition

  • Unicorn Children's Foundation Community Inclusion Awards Teacher/Educator of the Year Winner 2018

  • Worcester County North Central Chamber of Commerce member

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Dan DiMezza

CEO Summit Agency


  • Executive Director,  Summit Academy, Worcester, MA 2007 to Present;

  • Co-founder of Summit Agency, Inc., higher education supports;

  • Member, Board of Directors for Massachusetts Association of Approved Private Schools (MAAPS).


  • Program Director at Salter College, West Boylston, MA – 2005-2007 and PT 2012-2016

  • ACICS and Board of Higher Ed approved instructor, and Evening Administrator – Salter College

  • Accreditation Specialist for schools and colleges at ACICS, Washington DC 2006-2007 PT.


  • Framingham State University, Framingham, MA- Major, Political Science

  • Penn Valley Community College – EMT

  • Bancroft School Of Massage Therapy - LMT.

Professional Activities:

  • ALICE certificate -security, safety and lock-down protocols for schools

  • Former Board President and board member of Town of Barre EMS

  • Former Board member for WEARY health organization, West Boylston, MA

  • Worcester County North Central Chamber of Commerce member.

Dr. Oliver Joseph

Dr. Oliver Joseph

Chief Medical Officer



  • Chief Medical Officer, Summit Campus Worcester, MA

  • Founder & President, Integrated Psychiatric Consulting, P.C.

Education & Awards:

  • Board Certification in Psychiatry

  • Chief Resident in Consult-Liaison Psychiatry

  • Chief Resident in Emergency Mental Health Services

  • Residency in Psychiatry, University of Massachusetts, Worcester MA

  • Medical Degree - Virginia Tech Carilion School of Medicine

  • Bachelor's Degree - Boston University, Boston MA

Heidi Wittle

School Nurse


  • School Nurse, Summit Academy, Worcester, MA


  • LPN, Mount Wachusett Community College

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Elisabeth Peterleitner

Mental Health Counselor


  • Director of Development, Summit Academy, Worcester, MA


  • Outreach Coordinator, Shrewsbury Council on Aging, Shrewsbury, MA

  • Middle School Mathematics Instructor, Worcester Academy, MA

  • Administrative Assistant, Family Services of Central MA, Worcester, MA

Education & Licenses:

  • Developmental Psychology, Worcester State University

  • Master of Social Work, ​Boston University

  • Licensed Clinical Social Worker - Registered as of February 2021

  • Working toward Licensed Independent Clinical Social Work Licensing