Our Team | Acuity Eye Group

Leadership Team

Tom Chang, MD

Founder & Managing Partner

Michael Samuel, MD

Founder & Chief Medical Director

Education & Innovation

Michael Davis, retina specialist at Acuity Eye Group

Michael Davis, MD

Fellowship Educational Director

Vy Pham Optometrist Acuity Eye Group

Vy Pham, OD

Director of Optometry Services

Pia Rios

Executive Director

Clinical Operations

Alex Ashwal

Chief Operating Officer & Chief Financial Officer

Alexander Macbeth - Vice President of Operations at Acuity Eye Group

Alex Macbeth

Vice President, Operations

Photo of Tom Johnstone from Acuity Eye Group

Tom Johnstone

Senior Director, Contact Center

Angie Berber Director of Call Center

Angie Berber

Director, Contact Center

Christina Cruz

Director, Field Operations - Orange County

Christina De Hoyos

Director, Field Operations - San Diego County

Andrea Kane Director of Field Operations Acuity Eye Group

Andrea Kane

Director, Field Operations - Orange County

Josh Eddy

Director, Field Operations - LA County

William Matthias Director of Field Operations Acuity Eye Group

William Matthies

Director, Field Operations - San Diego

Robert Miller, Director of Field Operations at Acuity Eye Group

Robert Miller

Director, Strategic Partnerships

Clinical Engineering, Research & Development

Stephen Duncan

Vice President, Engineering

Brett Harris

IT Services Manager

Mher Grigoryan of Acuity Eye Group

Mher Grigoryan

Manager, Special Projects

Stephen Jewell of Acuity Eye Group

Stephen Jewell

Systems Administrator

Nathan Lowry at Acuity Eye Group

Nathan Lowry

Principal Data Scientist

Finance

Alenoosh Namagerdi of Acuity Eye Group

Alenoosh Namagerdi

Director, Revenue Cycle

Samantha Hofstad of Acuity Eye Group

Samantha Hofstad Chi

Controller

Siyouneh Torousian of Acuity Eye Group

Siyouneh Torousian

Revenue Cycle Manager

Enriqueta Cortes of Acuity Eye Group

Enriqueta Cortes

Revenue Cycle Manager

Compliance

Rich Marotti Chief Compliance Officer At Acuity Eye Group

Rich Marotti

Chief Compliance Officer

Terry Marchillo at Acuity Eye Group

Terry Marchillo

Contracts Manager

Marie Sakounphong of Acuity Eye Group

Marie Sakounphong

Compliance Manager

Mergers, Acquisitions, & Analytics

Derek Avdul of Acuity Eye Group

Derek Avdul

Senior Vice President, Corporate Development

Teagan George of Acuity Eye Group

Teagan George

Senior Business Analyst

Human Resources

Jessica Carlson of Acuity Eye Group

Jessica Carlson

Vice President, Human Resources

Celia Leung Director of HR

Celia Leung

Director, Human Resources

Sheri Alley Credentialing Department of Acuity Eye Group

Sheri Alley

Director, Credentialing

Arcy Bumgarner Payroll Manager

Arcelia Bumgarner

Payroll Manager

Winnie Chan of Acuity Eye Group

Winnie Chan

Human Resources Generalist

Kathy Peysar of Acuity Eye Group

Kathy Peysar

Corporate Recruiter

Marketing

Acuity Eye Group VP of Marketing Laura Rod

Laura Rod

Vice President, Marketing

Brittnie Salazar Acuity Eye Group

Brittnie Salazar

Senior Marketing Specialist

Clinical Research

Minerva Garcia Research at Acuity Eye Group

Minerva Garcia

Clinical Research Manager

Victoria Ramirez Research at Acuity Eye Group

Victoria Ramirez

Clinical Research Coordinator

monica chavez acuity eye group research

Monica Chavez

Clinical Research Asisstant

Ambulatory Surgery Centers

Nathan Dyska, Vice President of Surgery Centers at Acuity Eye Group

Nathan Dyska

Vice President, Ambulatory Surgery Centers

Susi Khan Director of Nursing

Susi Khan

Director of Nursing

Nancy Montigny

Nancy Montigny

Director of Nursing

Our clinical leadership team is made up of 21 physicians who mentor our doctors and drive the clinical culture in our practices.