Paritas exists because of a math problem.

When a commercial payer denies a $150 psychotherapy session, appealing it properly takes real work: reading the remittance, finding the payer's actual appeal channel, pulling the documentation, writing the letter, tracking a deadline that doesn't move.

Done by hand, that costs more than the claim is worth. So the claim gets written off. Across behavioral health, most denied claims are never resubmitted at all — and payers have built their operations around the assumption that providers won't push back.

Nothing about the appeals themselves is mysterious. The rules are published. The deadlines are knowable. The only thing standing between a small practice and that money is that the arithmetic doesn't work at $150 a claim.

I spent a decade in technology before starting Paritas. Building a system that makes small‑dollar recovery worth doing was the straightforward part. The work that mattered was the unglamorous part — reading the appeal rules for every major Pennsylvania commercial payer, from their own published sources, and writing down what each one actually requires. Two of the largest plans in the state route medical‑necessity appeals and billing disputes through entirely separate channels. Get that wrong and a well‑argued appeal lands in the wrong queue and dies there, unread.

Paritas is small and intends to stay specialized: Pennsylvania, outpatient behavioral health, commercial payers. Every appeal is read and approved by a person before it's filed — nothing goes out on autopilot. And we're paid only out of what we recover, which means our incentive and yours point the same direction.

— Stuart Carroll, Founder