InHouse Physicians’ (IHP) is led by a team of seasoned executives who are committed to working with corporations to turn liability into opportunity while promoting employee health, employee performance, and achieving corporate healthcare cost containment.Their innovative, bottom line approach has made InHouse Physicians an industry leader in employee health management.


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Jonathan Spero

Dr. Spero is the CEO of InHouse Physicians and a thought leader in the area of cost containment solutions for self-insured employers. He is an expert speaker on employee health care cost containment strategies, energy and performance, as well as medical risk management for corporate meetings and events.

Dr. Spero graduated medical school from the University of California, Davis. He completed his residency in Internal Medicine from Scripps Mercy Hospital in San Diego and has practiced both internal and emergency medicine. He currently resides in Chicago, Illinois.

President and Chief Executive Officer

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Roberta Tabac

Roberta brings a unique combination of skills in staffing, logistics, and organization to IHP. With over 20 years’ experience in executive level support in Fortune 500 companies and healthcare institutions, Roberta is responsible for the recruitment of medical professionals for Worksite Health Clinics, along with other medical staffing needs.  Roberta is also responsible for the management and flawless execution of IHP’s Corporate Flu Program.

Director of Recruiting and Flu Division
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Diane Eads

Diane joined the IHP team in 2007, and has positioned herself as a highly valued and contributing member, adding to the success of the company. As Chief Accounting Officer, she manages and maintains all financial interests of InHouse Physicians. Diane received her Bachelor’s Degree from Western Illinois University. Her strong business sense and background experience working in the medical field has proven invaluable in facilitating efficient workflow and overseeing the corporate financial accounts.

Chief Accounting Officer