How Brightline Brought Mental Health Care to 400,000 Kids Who Had Never Had It, and Why AI Is Not the One Delivering It

Mahssa Mostajabi is the Head of Product at Brightline Health, a pediatric behavioral health company delivering therapy, psychiatry, and coaching to kids, teens, and families across both virtual and in-person settings. She joined Brightline in April 2025, on the exact day the company’s first Brooklyn clinic opened, stepping into an organization mid-pivot from virtual-first to hybrid care. Before Brightline, her path wound through women’s health, maternal care, insurance, and fintech, with a consistent through line: building for people in overlooked moments in highly regulated environments. In this episode of Product Talk, Planned Parenthood Direct Chief Product Officer Hannah Park sits down with Mahssa to talk about what it means to build a product when your user is an entire family, how Brightline brought mental health care to 400,000 kids in California (77% of whom had never received mental health care before), and why the calculus around AI is fundamentally different when your users are children.

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Show Notes

1. Mahssa started her career in nonprofits through AmeriCorps at Girls Inc. of Greater Atlanta, expecting to stay in that world, before pivoting to tech during the era of Warby Parker and Glossier. Working in women’s health and now pediatric behavioral health is, in her words, her way of coming back to the work, finding mission alignment inside the private sector rather than leaving it.
2. She has consistently been drawn to highly regulated industries, including life insurance, fintech, employee benefits, and health tech, not despite the constraints but because of them. The challenge of innovating when not every option is available, and when regulatory compliance must be woven into every product decision, is what she finds most interesting about building in these spaces.
3. Brightline’s core design philosophy is to treat the family as the unit of care, not just the identified patient. That means thinking about how siblings are doing, how parents are doing, how other caregivers are doing, and designing the product experience to serve that whole system rather than just the child who shows up to an appointment.
4. When stakeholder needs appear to conflict, they often point at the same underlying problem when you get close enough. A project to improve onboarding form completion started because providers were losing appointment time completing forms with families on arrival. Fixing the flow improved the experience for families, providers, and the appointments that followed, all at once.
5. Teens are designed for explicitly at Brightline. They have their own login, they can communicate directly with their provider, and the product carefully partitions what gets shared with caregivers and what does not. Appointment times are visible to parents. Session content is not. Building therapeutic alliance with the identified patient requires that the teen trusts the relationship is actually theirs.
6. Mahssa joined Brightline on April 15, 2025, the exact day the company’s first Brooklyn clinic opened. She had no inherited playbook for the hybrid model and no runway to learn before the operation was live. Her approach was to ask why a lot, understand the catalysts behind the pivot, identify the gaps between where the company was and where it needed to go, and push hard on the places where product and engineering could have the clearest impact.
7. One of her first moves as a new joiner was to visit the Brooklyn clinic in person with a designer and conduct user interviews with front desk staff, providers, and managers. That on-site research gave her the credibility and data to drive changes without it feeling like personal opinion. The insights came from the people doing the work, not from the new person who had just arrived.
8. Moving from fully virtual to hybrid care surfaced problems that virtual operations had made invisible. Front desk staff were developing personal relationships with patients and families that had never existed in a member support model. Tasks that had been routed uniformly in a virtual system now needed to be split between front desk and member support based on context, physical presence, and relationship. The in-person experience had to be designed for from scratch.
9. Physical logistics that virtual care never had to consider became real product constraints overnight. New York City traffic meant patients arrived late and appointments ran short. The team had to think about how many providers could physically fit in a clinic, which days they came in, what the late-arrival policy was, and how to handle weather events like flooding that forced mass cancellations and rescheduling across an in-person schedule.
10. Bright Life Kids is a partnership with California’s Department of Healthcare Services that has now served over 400,000 kids across every county in the state, regardless of insurance or immigration status. Roughly 77% of the children who have come through the program are receiving mental health care for the first time, with a special focus on underserved communities.
11. Building for a state government partner is a fundamentally different experience from building for an employer or health plan. DHCS is present at every step of the product development process, from ideation through user acceptance testing. It is a co-building relationship where the state’s mission is the product’s north star, and the partnership demands a level of alignment and ongoing communication that most commercial relationships do not.
12. When a child comes to Brightline for the very first time, especially one who has never received mental health care before, what that first session owes them is unconditional positive regard, the beginning of therapeutic alliance, and above all a sense of safety. The product and the experience around it have to make that possible before anything clinical can happen.
13. Standard behavioral health outcome measures were not designed for children. Screeners like the PHQ-9 that are psychometrically valid for adults may not be valid for a pediatric population, and sending every child the same survey regardless of diagnosis produces low adherence on both the patient and provider side, because the measure simply is not relevant to that child’s specific situation.
14. Brightline rebuilt its measurement-based care program to assign diagnosis-specific surveys rather than universal ones. A child with ADHD receives different recurring measures than a child with OCD or anxiety. The team also collects responses from multiple informants, including caregivers and sometimes teachers, because a child’s self-report and a parent’s perception of the same progress can diverge significantly, and both are clinically useful.
15. The position on AI at Brightline is clear and intentional. AI should support frontline clinical staff: helping them work more efficiently, reducing cognitive load, improving documentation, and surfacing relevant information faster. AI should not be a direct frontline intervention for children. The chief medical officer has written publicly about how current AI models are far too sycophantic to do the work of a clinician, and Mahssa is aligned with that position.
16. The harder question she thinks about is whether there are contexts where access to an AI-based support could be better than no access at all. In regions where there is a serious shortage of licensed clinicians, or where culturally sensitive care is unavailable, an AI model trained on evidence-based therapeutic approaches might serve a need that nothing else is currently meeting. She does not have a yes or no answer, but she is watching this space closely.
17. Even in the areas where AI is being deployed internally, the focus is on predictable, repeatable, consistent tasks that do not require the kind of judgment and presence that care delivery demands. The goal is to give clinicians more capacity to be present with the families they are serving, not to automate the relationship itself.
18. The piece of career advice Mahssa ignored early on and has since come to deeply value: stay in your lane. As a young product person eager to be involved in everything, she resisted this. As she has grown as a leader, she has come to see that understanding clearly where a product person can have the most impact and focusing there, rather than diffusing attention across everything happening in the organization, is what actually moves things forward.
19. Outcome measurement in behavioral health is an area where the field has a long way to go, and Mahssa is honest that Brightline has at times been subject to the same limitations as everyone else. The industry default of using broadly adopted screeners regardless of their fit for a specific population or diagnosis is something she has worked actively to move away from, in collaboration with Brightline’s clinical leadership.
20. If she had a magic wand, she would expand the supply of providers trained to administer ADOS evaluations for autism diagnosis. In many places, families are waiting multiple years for this assessment, and the delay is not just about a diagnosis. Without it, children cannot access IEPs in school, cannot qualify for state-funded ABA therapy, and remain in limbo during years that matter enormously for their development.