About us

Portman are a team of professionals who care about one thing only. You.

At Portman, our senior team has a wealth of experience from the worlds of finance, commerce and health. We have been drawn together through a collective ambition to ensure excellence in dental practice. Our vision is holistic and simple: you are at the heart of everything we do.

Our Executive Team

CEO and Founder

Sam Waley-Cohen

Clinical Director

Mark Hamburger

Finance Director

Darren Milne

Chief Operating Officer

Julie Ross

Our Mergers & Acquisitions Team

Our success is your success

Complete clinical freedom, central financial and administrative assistance, and the support of a well-trained and motivated team. If you're looking to sell your dental practice, we'd be happy to hear from you.

Director of Mergers & Acquisitions

Gary Chapman

Our Clinical Team

Director of Clinical Dentistry

Rebecca Sadler

Director of Clinical Dentistry

Roy Bennett

Regional Clinical Lead - South West & Wales

Philip Pettemerides 

Regional Clinical Lead - North East

Catherine Tannahill

Regional Clinical Lead - North West

John Hewitt

A national network of clinical support

Our directors of clinical dentistry and regional clinical leads work closely with our clinicians to offer support, guidance and training.

Regional Clinical Lead - Northern Ireland

Pearse Stinson

Regional Clinical Lead - Scotland

Kevin Lochhead

Regional Clinical Lead - South West

James Critchley

Regional Clinical Lead - South East & London

Stuart Jacobs


Fmc Logo 2019 Winner Oby M25
Award Logo 2018
Dental Industry Award - Portman Dental Care
Private Dentistry Awards - Portman Dental Care
The Dentistry Awards - Portman Dental Care
Elite Practice Award - Portman Dental Care