Company Profile

Mission Statement

It is the mission of MMDS to deliver quality health care and portable diagnostic imaging in a safe, efficient manner that is respectful and convenient to the patient and cost effective to our clients by utilizing the latest diagnostic technology available and by employing caring professionals who share in this commitment.

Company Profile

MMDS of Boston is an independently owned and operated diagnostic imaging company committed to providing excellent radiological studies to patients in surroundings that are familiar to them. Our management team possesses a vast range of business and clinical experience.

R. Scott Grinley, M.Ed.: President/CEO

Scott Grinley has taken a unique path to business leadership. He received his BA from Salem State College and his M.Ed. from Boston College. Longing to start his own business in health care, Scott researched trends within the industry and found that the need for services to come to the patient is imperative. Feeling that the current standards in mobile imaging could be vastly improved upon, Scott started MMDS of Boston in June of 2006. Since then he has enjoyed rapid business growth and a reputation for excellence in mobile imaging. Before starting MMDS, he was the Director of Operations at Henley Enterprises and a franchisee of a leading national chain. Prior to his business experience, Mr. Grinley worked for twelve years as an 8th grade school teacher. Scott credits his experience as a school teacher as his foundation for his success in business. He states, “To be successful at either one must clearly communicate expectations, set attainable goals and benchmarks, collaborate, celebrate achievement, and above all show as much respect as you intend to get in return.”

Currently Mr. Grinley serves on several boards including:

The American Portable Diagnostics Association (APDA), Chairman (2016-Present);

The National Association for Portable X-Ray Providers (NAPXP), President (2014-2016);  

Athletes Unlimited, The Newton Area Special Olympics, Board of Directors (2013-Present)

Greg Rose, MD, PhD, Medical Director/Chief Radiologist

Greg RoseMMDS was proud to introduce Dr. Rose as its Medical Director and Chief Radiologist in December of 2011. His scientific background includes a physics B.S. from Bucknell University, a Ph.D. in physics from Texas A&M, university physics teaching of Electricity and Magnetism, General Physics, and Astronomy, and defense research for the US Army. His medical background includes medical school at UTMB, radiology residency at the Baylor University Medical Center, and an MRI fellowship at the Mayo Clinic. He has presented research at Physics and Medical conferences and has published work in the fields of solid state theory, laser theory, mammography, teleradiology, and Magnetic Resonance Elastography. Dr. Rose holds medical technology patents and also has patents pending. He is the chief architect of the RaysTracker™ (RIS). Dr. Rose has been in private radiology practice since 1998.

Brendan Carroll, MM, RDCS: Vice President of Technical Operations

Brendan CarrollBrendan Carroll has over 25 years of cardiac, vascular and pulmonary diagnostic testing experience in locations in both Europe and the U.S. In 1988, he was recruited from Ireland to run the cardiology department at Spaulding Rehabilitation Hospital in Boston, MA. Two years later, Brendan served in various management and clinical roles in the The Cambridge Hospital, a Harvard teaching facility.  In 2004, his management expertise was recognized via his appointment as Senior Director of Operations for the Cardiovascular, Respiratory, and EEG Departments for Cambridge Health Alliance – a network of three community hospitals (Cambridge, Somerville, and Whidden Hospitals).

Brendan holds a Masters Degree in Management, with a focus on healthcare, from Cambridge College. He is a Registered Diagnostic Cardiac Sonographer and is a current member of: the American Society of Echocardiography, Society of Diagnostic Medical Sonographers, and the American Society of Healthcare Professionals.

Brendan is also as an accomplished Irish Tenor with three CD recordings to date.

Joseph Luz, Vice President of Business Development

Joseph LuzJoseph joins the MMDS team with over 30 years of operational, sales, marketing, and business development experience. He has been nationally recognized by AAMCO as the top producer in business development for the Northeast. As General Manager at Computune, Joseph designed a number Point of Sale processes making the chain more efficient in production, development, and lead generation. Transitioning into health care has been a longtime goal for Joseph.

He states, “My goal is to use my strengths in a way that will help people live better lives, and to help MMDS in its commitment to be a leading healthcare provider in the Northeast.”

Michael Armstrong, CPA: CFO

Michael ArmstrongMichael Armstrong has an extensive background in public accounting. A graduate of Bentley College, he holds the distinction of Certified Public Accountant and has worked at both large and small firms. Currently, he provides tax and accounting services through his own public accounting firm. He is also a licensed stock broker, and was a principal of stock brokerage company that traded stocks, options, and wrote covered calls and puts.

Among his many accomplishments, Mike has also enjoyed a successful career in real estate including the acquisition of a 48-unit building in Lynn, MA and various properties throughout Massachusetts for over fifteen years.

Thomas Risser MD: Chief Cardiologist

Thomas RisserDr. Risser has enjoyed a remarkable medical career in both the military and private sector. He attended Pennsylvania State University College of Medicine and completed his residency at the Cornell Cooperating Hospitals. Dr. Risser came to Boston for his clinical fellowship in cardiology at the Beth Israel Medical Center in Boston, and a research fellowship in cardiology at the Brigham and WomanÂ’s Hospital in Boston. Dr. Risser is board-certified in Internal Medicine and Cardiovascular Disease.  He holds a Certificate of Advanced Competency in Adult Echocardiography from the ASE, and a Certificate of Special Competency in Cardiac Pacing and Defibrillation from the Heart Rhythm Society.  Dr. Risser is a fellow of the American College of Physicians, the American College of Cardiology, and the American Society of Echocardiography.  Currently, Dr Risser is the Medical Director for the Noninvasive Cardiac Diagnostic Labs at The Cambridge Health Alliance and is an Assistant Professor of Medicine at Harvard Medical School.

Dr. Risser is a Captain in the Medical Corps of the U.S. Navy, and is a Navy Designated Flight Surgeon, with service on 8 aircraft carriers over his 34-year military career. He deployed to Fallujah, Iraq with his Marine Corps unit in 2005-2006. CAPT Risser currently serves as the Assistant Deputy Medical Officer to the Marine Corps, based in Washington. He further serves as a Senior Aviation Medical Examiner for the Federal Aviation Administration.

Read Dr. Risser’s quotes in a recent Boston Globe Magazine article.

Crystal Clermont – Director of Operations











Additional Radiologists and Cardiologists

Richard Bentley, MD
Andrew Bostaph, MD
Edward Brewer, MD
Janice Brooks, MD
Kendall Capecci, MD
Jason Eves, MD
Gregory Homer, MD
Michael Lepeska, MD
Chad Robinowitz, MD
Timothy Rowland, MD
Rajvee Shah, MD
Alan Stone, MD
Jason Lance, MD

Pending Radiologists

David Gilliland, MD
Sean Keenan, MD
Nooruddin Punjwani, MD