Thomas Nantais, President

Thomas has been with the Henry Ford Health System (HFHS) for over 32 years and is presently the Chief Operating Officer of the Henry Ford Medical Group, one of the nation’s largest medical groups. He has been an Adjunct Finance Professor at the University of Michigan-Dearborn for 20 years. He earned his Bachelor’s and Masters of Business Administration-Finance degrees from Wayne State University in 1978 and 1982. Tom serves on the Board of Directors for the Michigan Roundtable for Diversity and Inclusion (MRDI).  Tom also founded and chairs the Board of the Belinda Sue Fund for Ovarian Cancer Research.  

Matt Bergstrom, Vice President

Matt is the president of Thornton & Grooms Heating, Cooling, and Plumbing. Since acquiring the company with his two business partners Mike Bergstrom and Dave Knight in 2004 he implemented a re-branding and expansion effort that has grown the company 10-fold. Matt earned his Bachelor’s degree in Business Management from Grand Valley State University. Matt serves as Vice President on the Board of Directors for Nexstar Network – a contractor’s best practices organization. He also serves as an Ambassador for the Greater Farmington Area Chamber of Commerce and is a volunteer and participates in short-term mission trips with Kensington Community Church.

Kari Klinski, Secretary

Karli is the Vice President of Community & Governmental Affairs at Spectrum Human Services, Inc. & Affiliated Companies. She has previous experience in child welfare and community, political and educational advocacy.

Patricia M. O’Neill, Treasurer

Pattie O’Neill is a forensic accountant with prior experience as an internal audit manager, budget officer, manager of credit card services, and chief financial officer. She has served on various not for profit boards including community services and a city arts council. 

Pamela Sawhney, Immediate Past President

Pamela is a Registered Nurse and an attorney.  She serves as a volunteer mediator for Oakland Mediation Center for general civil cases, special education and in the district court program.  She serves on the Board of Directors for Spectrum Human Services, Inc. & Affiliated Companies.  

Laurel F. McGiffert

Laurel is a senior partner and trial attorney at Plunkett Cooney, Ms. McGiffert has been practicing law for more than thirty years.  She concentrates her practice primarily in the areas of labor and employment law, medical liability, municipal, civil rights, and general litigation.  She has previous experience serving as an independent arbitrator and mediator in ADR hearings and has experience in serving on trustee boards for non-profit organizations. 

Elizabeth Pezzetti


Gregory J. Roth

Attorney Greg J. Roth has served the Oakland County and Southeast Michigan public in his own practice since 2001.  His practice covers both transactional and litigation matters.  Greg has practiced extensively in the Oakland County Probate Court for over 15 years, with other appearances in the probate courts in Wayne, Livingston, Washtenaw, Kent, and Ingham counties.  He has also handled matters in various circuit courts and district courts in the region.  Greg regularly serves as guardian ad litem, court-appointed attorney, and special fiduciary in probate matters.  Greg has also trained and holds qualification as a state-approved mediator.  Greg is a member of the State Bar of Michigan and the Oakland County Bar Association.  He is one of two 2006 recipients of the Oakland County Probate Court “Friend of Probate” award and is also a Fellow in the Oakland County Bar Foundation, a charitable organization.

James Lewis

Prior to creating the J Lewis Consulting Group, Jim spent his career with a global high-tech company in Ann Arbor, serving as VP and CHRO.  He managed nearly twenty post-acquisition workforce integrations globally.  He has been an adjunct faculty member and guest lecturer at Cleary University, Eastern Michigan University, and Wayne State University.  As President of the J Lewis Consulting Group, Jim provides interim CHRO services, and manages workforce transitions.  He advises senior executives on strategy refinement, succession planning, and provides executive coaching, as well as talent and culture assessments.  Jim was named the 2010 HR Executive of the Year by the American Society of Employers. He holds a Bachelor of Business Management and a Master of Science, International Administration.

Don Manfredi


Advisory Board 

C. Michael Malloy

Michael is the managing director of a management advisory firm located in Novi.  He has extensive experience in finance and insurance. Mr. Malloy is a Past President of OMC.  

A. David Baumhart


For Oakland Mediation Center’s articles of incorporation and by-laws, please contact the Executive Director.