The people

Thirty years, same faces.

A small, senior team that has done behavioral health billing — and nothing else — since 1994. The people who handle your claims are the people who answer the phone, by name.

Patrick Mahoney, Founder and CEO
Patrick Mahoney
Founder / CEO
Gabe Hynes, Founder and COO
Gabe Hynes
Founder / COO
Ariel Sieger, Billing Director
Ariel Sieger
Billing Director
Jonathan Estupinan, Director of Utilization
Jonathan Estupinan
Director of Utilization
Monica Calderon, Billing Lead
Monica Calderon
Billing Lead
Sarah Coventry, Billing Lead
Sarah Coventry
Billing Lead
Sandra Baggett, UR Case Manager
Sandra Baggett
UR Case Manager
Katrina DeBiase, UR Case Manager
Katrina DeBiase
UR Case Manager
Not a clearinghouse

Real people, not a ticket queue.

When you call Centerline, you reach someone who knows your facility, your payer mix, and the claims in motion — not a faceless clearinghouse that routes you to whoever picks up. The directors who set your strategy are the same people working your accounts.

That continuity is the point. Behavioral health billing is its own discipline — parity law, medical-necessity defense, SUD coding, level-of-care transitions. Our team has done nothing else since 1994, and the faces don't change. That is how the work stays sharp and the relationship stays personal.

Free billing review

Talk to the people who'll handle your claims.

No call center, no hand-off. Reach the senior team directly and see how a behavioral-health-only partner works.