Our Trusted Referral Network
Apex Mental Performance maintains a trusted referral network of independent professionals whose expertise complements our services. These practitioners operate their own businesses and are not employees, agents, or representatives of Apex. When appropriate, Apex may facilitate an introduction; clients engage directly with the independent practitioner, who is solely responsible for the services they provide.
Sophia Pellegrom, M.Ed., CMPC
Mental Performance Consultant
Sophia Pellegrom is a Certified Mental Performance Consultant. She works with a wide variety of teams, athletes, artists, and performers across all fields to help them perform at their best in high-pressure situations and use their minds to their advantage. Sophia’s main focus is the mind-body connection, with specialties in performance anxiety, concentration, stress and emotion management, burnout, goal setting, and motivation. Sophia also provides Biofeedback services and has a background in the performing arts.
Education
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Ph.D. Candidate, Counseling Psychology, University of Massachusetts Boston
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M.Ed., Counseling & Sport Psychology, Boston University
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B.A., Psychology and Dance, Barnard College (Columbia University)
Contact: pellperformancepsychology@gmail.com
Rachel Shinnick, M.Ed., CMPC
Mental Performance Consultant
Rachel Shinnick is a Certified Mental Performance Consultant. Her work focuses on the intersection of well-being and performance, helping athletes, executives, and high performers develop sustainable mental skills that support both excellence and balance. Rachel specializes in burnout, perfectionism, injury and rehabilitation, leadership, and career transitions. She works with collegiate and professional athletes, sports teams, and high-performing professionals.
Education
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Ph.D. Candidate, Counseling Psychology, University of Massachusetts Boston
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M.Ed., Counseling & Sport Psychology, Boston University
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B.S., Psychology, Wofford College
Contact: rshinnickconsulting@gmail.com
Rachel Shinnick is an independent practitioner who operates her own business and is not an employee of Apex Mental Performance.
Dr. Mark Stonkus
Mental Performance Consultant
Mark Stonkus is a Mental Performance Consultant and the Founder and CEO of the 6S Institute. He provides support to professional athletes, corporate executives, families, military personnel, and youth performers. He is licensed as a Mental Health Counselor, Certified Strength and Conditioning Specialist, School Social Worker & School Adjustment Counselor, and School Guidance Counselor. In addition to his consulting work, he is a faculty member of Counseling, School Psychology, and Sport at the University of Massachusetts Boston.
Education
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Ed.D., Counseling & Sport Psychology, Boston University
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M.A., Counseling Psychology, Boston College
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M.Ed., Fitchburg State University
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B.A., Tufts University
Mark Stonkus is an independent practitioner who operates his own business and is not an employee of Apex Mental Performance.