Leadership Team


Mohammad Millwala, MBA, CPA


: “I alone cannot change the world, but I can cast a stone across the waters to create many ripples.” -Mother Teresa

Mohammad founded DM Clinical in 2006 and has spent 15 years turning DM Clinical into a patient-focused company with an exceptional safety and efficiency record in overseeing clinical trials. Mohammad uses his dynamic education and experience to foster an environment focused on learning, impact, and results. In his free-time, Mohammad enjoys reading and spending time with his wife and 4 children.

Zohair Harianawala, MBA, PMP

VP of Operations

Zohair, VP of Operations, joined DM Clinical in 2012. His career has focused on helping businesses formulate strategies to capitalize on emerging opportunities or meet challenges in a shifting environment, while maintaining sound operational stewardship. He is particularly passionate about the strategic use of technology and analytics as tools in decision-making. He brings a depth of expertise in business management, operations and technology innovation honed in cross-sector leadership roles (including in the healthcare, manufacturing, telecommunications, education and non-profit sectors.)

He received an MBA from the University of Toronto’s Rotman School of Management and also has a bachelor’s in math and computer science from McGill University. Zohair enjoys spending time with his family and in the community of Houston.


Lisa Bjornestad

VP of Clinical Operations and Growth

Lisa Bjornestad joined the DM Clinical team in 2022 but is a well respected veteran in the clinical research industry for the past 25 years. As a new graduate, Lisa began her journey as a clinical research coordinator and has extensive experience in site operations, having directed both early and late phase research centers for the better part of her career. After 7 years working in a CRO, she has made her way back to clinical site operations. Lisa believes patients are the heart of everything we do in clinical research and is excited to be in a role where she can better serve those patients. Having grown up in Denver, Lisa cherishes her inherited Bronco season tickets and vows she will never be rid of them.

Shivani Shah, MS

Executive Director of Clinical Operations

Shivani Shah has been with our company for 12 years and now serves as our Executive Director of Operations. She began as a Clinical Research Coordinator and worked her way up – serving in almost every position a site has to offer. She combines her in-depth knowledge of each job into a zoomed-out perspective that allows her to successfully manage multiple teams. She is proud of leading multiple successful FDA inspections and continuously meeting sponsors’ needs for high and diverse enrollments. She graduated from Illinois Institute of Technology with a master’s in biology. Shivani enjoys reading and spending time with her husband and young daughter.

Marianne Tadros, CCPM, ACRP-PM

Director of Human Resources & Organizational Development

Marianne Tadros serves as our Director of Human Resources and Organizational Development. She joined DM Clinical in 2010 as a Clinical Team Lead, and has also served in the roles of Study Manager and the Director of Corporate Development. She loves to find new ways to increase employee engagement and happiness. She integrates this passion with her first-hand experience in clinical trials to be a driving force of this organization. Marianne is originally from California and holds a degree in Neuroscience from the University of California, Riverside. She is a proud wife and mother of three.

Chandra Tobin

Director of Site Operations

Chandra has been a part of the DM Clinical team for 11 years, with 20 years of total clinical research experience. She worked her way up from Clinical Research Coordinator to Director of Site Operations, overseeing DM Clinical’s 5 mega-sites. She works closely with our Principal Investigators and is passionate about her staff and efficiency in site operations. Her exceptional commitment to quality research is matched only by her dedication to each patient being served with care and compassion. Chandra is a native Texan who enjoys the outdoors and prioritizes her family, including her 3 active children.

DM Clinical

Advancing medicine through innovation and dedication.