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How Brightline Brought Mental Health Care to 400,000 Kids Who Had Never Had It

9/25/2026
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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 free behavioral health coaching to over 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.

In this episode, we cover:

(1:37) Mahssa's path from Girls Inc. and nonprofits through women's health to pediatric behavioral health

(3:50) Why she keeps choosing highly regulated industries, and what that means for how she builds

(5:51) Building for the whole family: navigating kids, parents, clinicians, and payers

(10:30) How Brightline designs explicitly for teen privacy without losing parental trust

(12:31) Joining Brightline on day one of the hybrid pivot and how she oriented herself fast

(15:11) On-site clinic visits as a new joiner: what user interviews with clinic staff revealed

(16:20) What in-person care surfaced that virtual data could not

(21:43) Building Bright Life Kids with California's DHCS: what a true state partnership looks like

(23:27) What a first mental health session owes a child who has never received care before

(24:38) Why standard outcome measures often fail pediatric populations, and what Brightline built instead

(29:16) Where AI belongs in pediatric behavioral health, and where Brightline says it should not go

Blog and detailed workflow walkthroughs from this episode: https://productsthatcount.com/how-brightline-brought-mental-health-care-to-400000-kids-who-had-never-had-it-and-why-ai-is-not-the-one-delivering-it/

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