Mark Preston, M.D., J.D. – Founder and CEO

Mark Preston- Founder and CEO

Mark Preston established predecessor entities to Paragon Investment Management in 2004 to acquire, develop, manage and own a portfolio of properties which now comprises 44,331 square feet of office and residential space. Current market value of the portfolio is $7.6M consisting of a 76% equity position (equity $5.8M, mortgage debt $1.8M). He established Paragon Investment Management in 2021 to bring management of the portfolio under one entity, to focus on business expansion and to continue creating real estate value. Mark Preston is the firm’s founder, owner and president. His responsibilities include acquisitions, development, leasing, management and operations.

He attended the six-year combined BA/MD Honors Program at Boston University graduating summa cum laude from the Boston University College of Liberal Arts. He received his doctorate of medicine from the Boston University School of Medicine, and completed a surgical internship at North Shore University Hospital, a part of Northwell Health, in Manhasset, NY. Subsequently he attended the Maurice A. Deane School of Law at Hofstra University, Hempstead, NY, on scholarship.

Dr. Preston completed a residency in radiology at the University of Medicine and Dentistry of N.J, New Brunswick, NJ, serving as Chief Resident during his final year.

He completed a fellowship in Magnetic Resonance Imaging at St. Jude Children’s Research Hospital and the University of Tennessee in Memphis, TN. His fellowship training encompassed all aspects of musculoskeletal, neuroradiological, and body Magnetic Resonance Imaging. Dr. Preston founded Paragon Radiology, LLC, in 2003 to provide teleradiology services to clients nationwide. He maintains medical licensure in 43 states and the District of Columbia. He has been in the private practice of radiology for 26 years.

Erica VanHaerents – Business Manager

Callahan Chapman- Business Manager

Erica was born and raised in Clearwater, Florida. She attended the University of Central Florida, where she obtained a Bachelor’s in Psychology. Before becoming part of the Paragon team, she worked at AdventHealth Cancer Institute in Orlando. Subsequently, she obtained her Insurance License and worked at Bankers Life, in Jacksonville, as an Insurance Agent. Erica immediately addresses current tenant requests and needs.  Erica promptly responds to inquiries from bankers, brokers, lenders, property owners, prospective tenants and vendors.  She manages our business office and ensures our operations run efficiently and smoothly.  She is integral to our organization.