RCOSA Staff
RCOSA’s success and the success of our residents would be impossible without our incredibly experienced and dedicated staff, all of whom are licensed and certified.
Steve Greenberg BA, CADC In The Field Since 1992
Founder-Executive Director
John Meissner BA, CADC In The Field Since 1981
Primary Counselor
Stan Hall CADC in the field since 1994
Primary Counselor
Mathew Diedrich, LCSW, CADC
In the field since 2019
Primary Counselor
Lizz Blackwell, CADC in the field since 2018
Primary Counselor
KELLY MENGARELLI FACILITY MANAGER Since 1996
Board of Directors
Steve Greenberg
BA, CADC, Chariman, Founder-Executive Director
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Phillip Kosanovich
PK Associates
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Glenn Hafner
Strategic Business Executive/Fundraiser
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DAN SEMENAK
Banking
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Jan Syslo, PhD.
Clinical Neuropsychology
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Christopher Mahr
M.D.
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John Creighton
Realtor
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Hunter Kaiser
Founder, HK+C
CAMERON GRANT
Food Manufacturer