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InSite Health|About
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About us

InSite Health is redefining delivery of mental health care services for schools, communities, and organizations.

Our Mission

InSite Health delivers accessible, high-quality behavioral health care to children and families—meeting them where they are, whether in clinics, schools, or the community.

InSite provides local communities access to in-network, high-quality mental health and psychiatric care. We meet patients where they are: at home, at school, or at one of our convenient locations.

We offer comprehensive mental health and psychiatric care to individuals, families, schools, nonprofits, colleges, and organizations. InSite also provides preventative mental health training and programming for school districts.

InSite Health|About

Tech-Driven Care

Where Technology and
Mental Health Converge

InSite Health leverages innovative solutions to deliver accessible, high-quality care that meets patients wherever they are.

Telehealth Accessibility

InSite Health harnesses advanced telehealth technology to provide patients with seamless access to mental health and psychiatric care from the comfort of their homes, ensuring convenience and reducing barriers to care.

Data-Driven Insights

By utilizing cutting-edge tools and analytics, InSite Health delivers personalized treatment plans and proactive support, empowering individuals with care tailored to their unique needs.

Integrated Care Solutions

Combining technology with compassionate care, InSite Health collaborates with schools, organizations, and communities to create comprehensive mental health programs that enhance well-being across diverse settings.

Seamless Communication

InSite Health integrates secure digital platforms that allow for easy scheduling, virtual sessions, and ongoing communication between patients and providers, ensuring consistent and accessible care.

Innovative Preventative Programs

Through digital platforms, InSite Health delivers preventative mental health training and resources to schools and organizations, promoting early intervention and long-term well-being.

Our Team

We are caring mental health and psychiatric professionals committed to improving outcomes.

InSite Health’s team is made up of compassionate mental health and psychiatric professionals committed to improving outcomes by combining expertise, compassion, and innovative approaches tailored to meet the unique needs of each patient.

InSite Health | About

Christopher Gaeta, MBE

Chief Executive Officer
Bio
InSite Health | About

Nathan Carroll,
DO, MBA, MPH, CMPE

National Medical Director
Bio
InSite Health | About

Elliot Levy

Chief of Staff
Bio
InSite Health | About

Stu Libby

Chief Revenue Officer
Bio
InSite Health | About

Justin Geller, CFP

Chief Operating Officer
Bio
InSite Health | About

Dina Aronzon, MS

VP of Product
Bio
InSite Health | About

Alan Blankstein, JD, MBA

General Counsel
Bio
InSite Health | About

Julie Gilliam, MSHRM

VP of Operations & HR
Bio
InSite Health | About

Tonya Jones

Account Manager: Schools & Government Programs
Bio
InSite Health | About

Adrian Koren, MS

Director of Engineering
Bio
InSite Health | About

Melissa Nelson, EdD

Advisor, School Threat Assessment & Behavioral Risk Management
Bio
InSite Health | About

Roxanne Popple, PsyD

Director of Outpatient Therapy
Bio
InSite Health | About

James Rossi

VP of Sales & Partnerships
Bio
InSite Health | About

Alissa Whelan, MS, LBS, LPC

Director of School-Based Services
Bio
InSite Health|About

CARE PROVIDERS

Compassionate Care, Every Step of the Way.

At InSite Health, our dedicated mental health providers offer compassionate, personalized care to support your well-being. Whether you’re seeking individual therapy or a solution for your organization, our team is here to guide you through every step of your mental health journey. Let us help you transform challenges into opportunities for growth and healing. Reach out today to begin your path to better mental health.

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Christopher Gaeta

Chief Executive Officer

Christopher Gaeta served as the Chief Executive Officer at Grapefruit. The company grew to service more than 250,000 patients across the nation as a leader in end-to-end campus wellness. Gaeta also has served as a venture capital associate specializing in healthcare investments for VU Venture Partners.

A contributor to CNBC, U.S. News & World Report, and Yahoo Finance, Gaeta has amassed one of the largest LinkedIn networks in the country for digital healthcare.

He was named a top Gen Z Venture Capitalist by Business Insider and nominated to the Philadelphia Business Journal’s Under 25 inaugural list.

Currently, he leads InSite Health as the Founder and Chief Executive Officer. InSite is a venture-backed healthcare company redefining the delivery of mental health care for underserved communities.

Nathan Carroll, DO, MBA, MPH, CMPE

National Medical Director

Dr. Nathan Carroll, DO (2021), MBA (2019), MPH (2024), is a psychiatrist and the National Medical Director of Insite Health. Prior to leading the clinical work at Insite, Dr. Carroll served as chair of the American Psychiatric Association’s Leadership Fellowship and chief of the Jersey Shore University Medical Center’s psychiatry residency. Dr. Carroll remains active in his professional community, serving on several boards, including Secretary/Treasurer of the New Jersey Psychiatric Association, the Rowan-Virtua School of Medicine Alumni Association, and the American Psychiatric Association’s Council on Mental Health IT and Telepsychiatry, as well as the Council of Healthcare Systems and Financing.

Dr. Carroll graduated in 2006 from William Paterson with a degree in philosophy and then worked as a family counselor with Family Preservation Services. During this time, he became deeply familiar with the numerous barriers to psychiatric care that his family faced. As a result, he was inspired to pursue a career in medicine, juggling pre-medical classes with full-time employment before being accepted into the Rowan School of Osteopathic Medicine in 2016.

While at Rowan, Dr. Carroll completed a dual DO/MBA, earning a degree in medicine and a master’s degree in business administration. He also founded one of the first osteopathic business of medicine student societies, Investmed. Additionally, he created an area of distinction in Medical Practice Leadership, started a medical student entrepreneurial competition, and helped found a healthcare pricing transparency startup. He was inducted into honor societies Beta Gamma Sigma and Alpha Epsilon Lambda. He later completed a master’s degree in public health, with a focus on health informatics at Yale. He has also passed the American Osteopathic Board of Neurology and Psychiatry certification exam and is board-certified by the College of Medical Practice Executives.

Dr. Carroll completed his general psychiatry residency at Hackensack Meridian Jersey Shore University Medical Center. While in Residency, he was named Psychiatry Resident of the Year in 2023 and 2024 and awarded the Eileen Masterson and Irene Trowel-Harris scholarships. In 2025, he was later awarded the prestigious Joseph Miller Excellence in Leadership Award by the hospital and the Emerging Leader Award by the American Psychiatric Association Foundation.

Dr. Carroll has advanced numerous psychiatric and public health initiatives, including a successful Monmouth and Ocean County-Wide Mental Health Fair. Dr. Carroll’s academic achievements include presenting original research at the American Psychiatric Association and serving as the lead editor and a chapter contributor to a textbook on Internet Gaming Disorder, titled “Internet Gaming Disorder: A Strategy Guide for Providers, Parents, and Players.” This book is scheduled for release by the end of 2025. He is currently working on a book related to the mental health impact of Cell Phone usage. He has two more books currently in the works!

Nathan’s work and commentary have been featured in Time Magazine, The Washington Post, The New York Times, Health.com, Fox News, ABC, CBS, Yahoo! News, Newsweek, The Sun, and many other prominent outlets. He is particularly interested in the intersection of mental health, technology, popular culture, and innovation.

Elliot Levy

Chief of Staff

Elliot joins InSite as our Chief of Staff. Prior to InSite, Elliot spent years in healthcare venture capital as a Senior Associate analyzing digital health, medtech, and tech-enabled service companies. Elliot was the co-founder of a brain stimulation venture and brings prior expertise in operations at Virtina and private equity fintech at Hamilton Lane. He graduated cum laude from Drexel University’s Close School of Entrepreneurship with a degree in Entrepreneurship and Innovation.

Stu Libby

Chief Revenue Officer

Stu Libby is a seasoned entrepreneur, operator, and investor with deep expertise at the intersection of healthcare and technology. He was the Founder & CEO of Zipdrug, a venture-backed marketplace where pharmacies competed to win business based on outcomes, acquired by Elevance (NYSE: ELV), a Fortune 20 company. He also co-founded Circulate, a venture-backed advertising marketplace acquired by LiveRamp (NYSE: RAMP). Earlier in his career, Stu was a top-performing sales executive at DoubleClick and Google.

After his exits, Stu joined Runa Capital as a Venture Partner, advising and investing in disruptive startups. He has been recognized as an inaugural recipient of AARP’s 50+ Innovative Leader award and named to PM360’s Elite 100, with his work featured in outlets including CNBC, The Wall Street Journal, and Business Insider.

Justin Geller, CFP

Chief Operating Officer

Justin Geller is a healthcare operator and serial entrepreneur with deep experience scaling companies across behavioral health, digital health, and services. He was most recently Chief Operating Officer at Sonara Health, where he led growth into 12 states and nearly 60 locations. Previously, he co-founded Monument, scaling it to over 10,000 users, 200 clinicians, and multiple national payer contracts. Earlier in his career, he founded and successfully exited home and commercial service businesses, Paintzen and MyClean.

Dina Aronzon

VP of Product

Dina brings over 15 years of product management experience, with a career deeply rooted in healthcare innovation across payer, provider, and patient- centered solutions. Prior to joining Insite, she served as Vice President of Product at Avant-garde Health, where she spent six years building and leading high-performing product, design, and engineering teams.

Dina holds a Master’s degree in Applied Physics from Harvard University and a Bachelor’s in Chemical Physics from Swarthmore College. She is passionate about creating thoughtful, scalable solutions that improve healthcare delivery and outcomes. Based in Boston, Dina thrives at the intersection of data, design, and impact.

Alan Blankstein, JD, MBA

General Counsel

Alan Blankstein serves as General Counsel at InSite Health, where he oversees all legal and regulatory matters in support of company operations. Prior to joining InSite, he was a healthcare attorney at Frier Levitt. He also served as a Deputy Attorney General for the State of New Jersey, handling professional licensing prosecutions, and clerked for the Honorable Heidi Willis Currier, J.A.D., in the Superior Court of New Jersey, Appellate Division.

Alan holds a J.D. from Seton Hall University School of Law, an M.B.A. from Rutgers Business School, and a B.A. from West Virginia University.

Julie Gilliam, MSHRM

Vice President of Operations & HR

Julie has over 6 years of experience in the Behavioral Health field, specializing in Operations and Human Resources. She is known for enhancing organizational effectiveness and employee satisfaction through employee-centered processes. With expertise in talent management at the outpatient level, Julie ensures teams are aided to deliver high-quality care. She is passionate about mental health advocacy both in and out of the workplace.

Tonya Jones

Account Manager: Schools & Government Programs

Tonya brings over 20 years of experience in client engagement, strategic leadership, and business development across the life sciences, pharmaceutical, marketing, and healthcare sectors. As Account Manager for Schools & Government Programs at InSite Health, she manages partnerships with school districts and government-funded initiatives to expand access to mental health services and drive measurable outcomes. Tonya combines strategic planning, operational oversight, and data-driven execution to support the success and growth of InSite Health’s mental health wellness programs.

Prior to joining InSite Health, she managed portfolios for companies specializing in marketing solutions and logistics, where she streamlined operations and enhanced client satisfaction. Tonya holds a B.S. in Engineering & Technical Management from Rutgers University and is a Certified Lean Six Sigma Green Belt. She is also an active member of Alpha Kappa Alpha Sorority, Incorporated, and The Links, Incorporated.

Adrian Koren, MS

Director of Engineering

Adrian Koren is a seasoned Senior Software Engineer with over 30 years of experience as a technical lead, software architect, and agile team mentor. His career spans startups and enterprise organizations—including Autodesk, Flourish Labs, and Vela Systems—where he has successfully led engineering efforts across greenfield mobile app development, cloud-native platforms, and AI-powered mental health technologies.

Adrian is known for his user-first development approach, depth in scalable architecture, and ability to foster strong team collaboration. His solutions-oriented mindset and commitment to building high-quality, impactful tools make him an invaluable addition to the InSite Health team. Adrian is passionate about using technology to advance access and innovation in behavioral healthcare.

Melissa Nelson, EdD

Advisor, School Threat Assessment & Behavioral Risk Management

For over 30 years, Dr. Melissa M. Nelson has worked in the space where K-12 education, behavioral health services, law enforcement, and legal systems intersect. She has served in a variety of roles in urban, suburban, and rural education systems, including as an elementary and special education teacher and elementary and secondary administrator. Prior to her work in education, Dr. Nelson spent over a decade as a mental health clinician and victim advocate in various psychiatric, mental health, and legal settings. These settings in Pittsburgh, PA, included Western Psychiatric Institute and Clinic’s Emergency Room, the Allegheny County Emergency Services Mobile Crisis Unit, the Center for Victims of Violent Crime, and the Pressley Ridge School for the Deaf.

Dr. Nelson serves as a national expert in K-12 Standard of Care civil litigation matters for Park Dietz & Associates Forensic Experts and Consultants and is a consultant on K-12 Threat Assessment Cases for the Federal Bureau of Investigation’s Pennsylvania Field Offices.  Dr. Nelson was the K-12 systems subject matter expert for the Southwestern PA Threat Assessment Hub, a grant-based program supported by the US Department of Homeland Security, the Pennsylvania Commission on Crime and Delinquency, and the University of Pittsburgh Medical Center. She collaborated on a team of national subject matter experts involved with the U.S. Department of Homeland Security’s Public-Private Analytic Exchange Program (AEP), which focused on creating a prevention toolkit for community organizations to address Violent Extremism.

As an Assistant Professor of Practice at the University of Pittsburgh, Dr. Nelson teaches aspiring superintendents, central office leaders, and building-level leaders doctoral and masters-level coursework focused on school safety and security, school behavioral and physical health, and school law. As a seasoned educator who understands the operational realities of working within K-12 systems, her ability to relate to school system key stakeholders provides the foundation for the collaborative work necessary to develop Behavior Threat Assessment and Management Teams, Suicide Screening and Postvention Response Systems, and Emergency Preparedness Plans in K-12 settings.

In her daily work, Dr. Nelson serves as a K-12 School Safety and Security subject matter expert, focusing her consultation and training on supporting educators with building skills, efficacy, and a belief that they are the most powerful protective factor for keeping schools safe and secure.

Roxanne Popple, PsyD

Director of Outpatient Therapy

Dr. Roxanne Popple, Psy. D., is a licensed Clinical Psychologist who has experience with ages across the lifespan, predominately working with individuals aged 16+. She is experienced in working with mood disorders, life stressors and adjustment, relationship difficulties, and grief. Dr. Popple is specialized in working with concerns related to medical diagnoses, women’s health concerns, eating disorders, and supporting those who are caregiver’s to a loved one.

Dr. Popple completed her education through Marywood University and pursued specialty training in health psychology and behavioral health care during her internship and fellowship years.

Dr. Popple approaches care through a holistic perspective, by incorporating different strategies from empirical research and clinical practice.

Dr. Popple prides herself on being able to meet clients where they are at in their lives and promoting wellness and change from within.

James Rossi

VP of Sales & Partnerships

James Rossi is the Vice President of Sales & Partnerships for InSite Health, a leading healthcare technology company. James has 9 years of experience in the sales industry, and 5 years experience in healthcare. He has a proven track record of driving revenue growth, building successful partnerships, and leading sales teams. Prior to joining InSite Health, James worked in the pharmaceutical industry, where he was responsible for sales, business development, management, and strategy planning. He is a South Jersey native who graduated from Kutztown University and holds a degree in Business Administration. James is passionate about using technology to improve healthcare outcomes and is committed to helping InSite Health continue to drive innovation in the industry.

Alissa Whelan, LCSW

Director of School-Based Services

Alissa Whelan is a Licensed Clinical Social Worker who empowers children, adolescents, and young adults to overcome personal obstacles and find balance by improving their view of self, the world, and interpersonal relationships. She is passionate about helping patients remove the blocks that prevent them from living as their best selves, supporting them in cultivating healthier, more fulfilling lives. Her work emphasizes behavior change and the development of positive habits through grounding, mindfulness, and self-compassion practices.

In addition to her clinical expertise, Alissa has a deep commitment to supporting youth in school settings. She believes schools play a critical role in identifying and addressing students’ mental health needs early and is dedicated to partnering with educators, administrators, and families to foster safe, emotionally supportive learning environments. Alissa finds great fulfillment in helping students navigate the complexities of school life while building resilience, confidence, and emotional insight.

Her therapeutic approach integrates evidence-based modalities such as Cognitive Behavioral Therapy (CBT), Dialectical Behavioral Therapy (DBT), and trauma-informed interventions. She also incorporates yoga and meditation into her sessions, encouraging patients to reconnect with their bodies and inner calm through mindfulness.

Alissa’s work is grounded in a strengths-based, person-centered philosophy. She supports clients in managing stress, increasing self-worth, processing trauma, developing assertiveness, regulating mood and anxiety, and creating routines that promote emotional well-being and long-term success.

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InSite Health | About

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We were recently informed that a large provider of outpatient psychiatric care discharged patients from care due to their discontinuation of services. InSite currently has the availability to accommodate new patients via telehealth or in-person.

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