Meet our passionate and caring team dedicated to supporting you and your family every STEP of the way.
Dr. Barbara J. Mancini (she/her)
Clinic Founder & Head Psychologist
Dr. Mancini is the heart behind Step Stone Psychology—a dedicated clinician, educator, and advocate who brings warmth, expertise, and authenticity to everything she does. With years of experience across hospital, community, private, and corporate settings, she founded Step Stone with a vision to create a space where every client feels safe, affirmed, and genuinely supported.
Known for her deep commitment to client-centered, evidence-based care, Dr. Mancini leads our team with compassion and integrity. Her passion for serving LGBTQ2S+ communities, along with her diverse background in addictions, gender care, and assessment, shapes the inclusive and specialized care that Step Stone is proud to offer.
The Step Stone Family
We’re more than just a clinic team; we are a group of highly-trained individuals dedicated not to just the wellbeing and care of our clients, but our family, too.
Psychologists
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![A woman with long, curly brown hair and glasses, wearing a colorful floral blouse, smiling against a dark grey background.]()
Dr. Nina Vitopolous (she/her)
Clinical & Forensic Psychologist (Child, Adult)
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![A woman smiling outdoors with green ivy leaves in the background.]()
Dr. Vicky Lishak (she/her)
Clinical & Neuro Psychologist (Child)
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![Portrait of a smiling woman with curly hair, wearing a black shirt and hoop earrings, against a neutral background.]()
Dr. Shanelle Henry-Gordon (she/her)
Clinical & Forensic Psychologist (Child, Adult)
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![A woman with long wavy blonde hair, smiling, wearing a light-colored top, in an indoor setting with a dark background and some framed pictures.]()
Dr. Camille Guérin Marion (she/her)
Clinical Psychologist (Child, Family)
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![A woman with curly dark hair smiling and wearing a bright pink top, standing in front of green trees.]()
Dr. Mirella Pugliese (she/her)
Clinical (Child, Family)
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![Young woman with long dark hair smiling outdoors with green foliage in the background.]()
Dr. Valbona (Val) Semovski (she/her)
Clinical Psychologist (Child, Adult)
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![A woman with shoulder-length brown hair smiling and wearing a black top and purple blazer, standing in front of a lush green leafy background.]()
Dr. Joanna Collaton (she/her)
Clinical Psychologist (Adults)
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![A young woman with long, curly black hair and a light pink tie-dye shirt sitting at a desk in an office with large windows and modern furniture, smiling at the camera.]()
Dr. Mariam Ayoub (she/her)
Clinical Psychologist (Child, Adults, Couples)
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![A woman with long wavy hair wearing a red top, smiling and standing against a plain background.]()
Dr. Kayla Hamel (she/her)
Clinical Psychologist (Child, Adults)
Psychotherapists
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![Portrait of a man with glasses, a beard, and dark hair, wearing a black turtleneck against a white and blue background.]()
Bhisham Kinha (he/him)
Adults & Couples
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![A woman with gray hair smiling, wearing a black top with gold necklaces and a beige cardigan, sitting indoors.]()
Arlene Vandersloot (she/her)
Adults & Family
Social Workers
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![A woman smiling outdoors with green trees and sunlight in the background.]()
Christina Yager (she/her)
Child & Adults
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![Portrait of a woman with long wavy hair wearing glasses and a black top with embroidered details, standing in front of a brick wall.]()
Adina Hauser (she/her)
Child, Adults, & Family
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![A woman with long brown hair smiling, wearing a black blazer, against a light background.]()
Fiona Daly (she/her)
Child, Adults, & Family
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![A woman with shoulder-length blonde hair wearing glasses and a gray t-shirt, smiling in front of a textured wall.]()
Joanne Seel (she/her)
Child, Adults, & Family
Doctoral Associates & Doctoral Practicum Students
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![A young woman with long brown hair smiling at the camera in front of a window with greenery outside.]()
Laura Goldstein (she/her)
Resident (Child, Forensic)
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![A woman with long brown hair smiling, wearing a brown turtleneck and dangle earrings.]()
Marlee Salisbury (she/her)
Associate (Child & Emerging Adults)
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![A woman with long wavy hair wearing a blue button-up shirt standing outdoors in front of a wooden fence.]()
Rivka Levin (she/her)
Associate (Child)
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![Close-up of a middle-aged woman with shoulder-length brown hair, smiling, outdoors with green foliage in the background.]()
Adair Roberts (she/her)
Associate (Adults & Family)
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![A woman with long, wavy brown hair taking a selfie indoors.]()
Phoebe So (she/her)
Associate (Emerging Adults)
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![A young man with glasses and short black hair, wearing a maroon button-up shirt, smiling at the camera against a plain light gray background.]()
Shawn Mistry (he/they)
Associate (Child & Emerging Adults)
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![Smiling young woman with long blonde hair wearing a white sweater, standing outdoors with green foliage in the background.]()
Sabrina Brodkin (she/her)
Associate (Child & Emerging Adults)
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![A young woman with long wavy dark brown hair, wearing a cream-colored turtleneck sweater, smiling at the camera against a plain light gray background.]()
Cassandra (Cass) Stevenson (she/her)
Associate (Child & Forensic)
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![A woman with dark brown wavy hair, glasses, and a smile, wearing a plaid blazer over a black top and layered gold necklaces, standing against a neutral background.]()
Martina Faitakis (she/her)
Practicum Student (Child, Emerging Adults, & Forensic)
Executive Functioning (EF) Coaches
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![A young man wearing glasses and a maroon button-up shirt, smiling at the camera in front of a plain light gray background.]()
Shawn Mistry (he/they)
Youth & Emerging Adults
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![A woman with long black hair smiling outdoors on a sunny day, with green foliage in the background.]()
Nivatha Moothathamby (she/her)
Youth & Emerging Adults
Clinic Administration Team
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Sauwmi Semovksi (she/her)
Client Care & Administrative Coordinator