Imaging Center Management Team

To contact a member of our Imaging Center management team, please contact their respective imaging center site.

Jessica Montgomery
MBA/HCM, RT (R) (M)
Chief Operations Officer

Sherry L. Freeman
Director of Clinical Operations

Yvette Lemus
R.D.M.S, R.V.T
Director of Clinical Operations – East Division

Daina Nasir
R.T. (M)
Clinics Manager/Mammography Supervisor
Jim & Eleanor Randall Breast Center

Nicholas Schumann
R.T.(R)(MR)(CT)
Imaging Center Manager
Huntington-Hill Imaging Center,
on Cordova

Sandra Mancia
R.T.(MRI)(M)(R)(ARRT)
Imaging Center Manager
Hill Imaging Center,
West Covina

Business Services Management Team

Administrative services are provided by our management service organization, CMBS (California Medical Business Services). To contact any business services team member, please call CMBS at 626-821-1411, or visit their website for more information: www.cmbsllc.net.

Alicia Vasquez
CRA, FRBMA
Chief Executive Officer

Laura Tierney
Chief Financial Officer

Annabelle De La O
Director, Service Center

Stephanie Hatton
Director, Revenue Cycle

Beth A. Filip
Director, Quality and Compliance

Luz D. Chaidez
Director, Human Resources

Howard Yang
Director, Information Technology

Marc Behun
Director, Integration