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 17 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

Chief Strategy Officer

Zohair, Chief Strategy Officer, 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.

Mark Ubert

Chief Financial Officer

Mark embarked on his career in public accounting, amassing eight years of experience in the field. Since 1999, he has been actively involved in the Life Sciences/Pharma Services industry, supporting operational activities both in the USA and internationally. Mark’s journey includes contributions to companies of varying sizes, culminating in his recent role at a family-owned organization in Durham, NC. Now, at DM Clinical, he takes charge of the finance department and leads various strategic initiatives.


Lisa Bjornestad

Executive Vice President of Strategy 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 27 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

Vice President of Operational Strategy and Excellence

Shivani Shah has been with our company for 14 years and now serves as our Vice President of Operational Strategy and Excellence. 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.

Christopher Reese

Vice President of Patient Enrollment

Chris serves as the Vice President of Patient Enrollment for DM Clinical. He is a strategic leader with a track record of delivering exceptional results through leadership, culture, and innovative business solutions. He has over 25 years of experience in leading contact center service and sales operations in the healthcare and financial services industries. Throughout his career his career, Chris has focused on building best in-class, culture-driven organizations that drive exceptional results through a highly engaged workforce. His passions lie in creating a work culture where advocates feel respected and cared for while making a difference in the lives of the people they serve. He currently lives in Gilbert, Arizona and enjoys spending time with his wife and three adult children camping, going to the movies, or attending sporting events.

Wes Bonner

Vice President of Strategic Relationships

Wes Bonner brings over 25 years of experience in cultivating physician relationships and building site networks to the company. He has held key positions such as Chief Relationship Officer, Vice President/Principal Investigator Liaison, and Director of Business Development. Wes Bonner is widely recognized as a thought leader in clinical research, frequently speaking at industry conferences and actively participating in multiple industry committees, including SCRS Membership Committee. He also possesses extensive experience in pharmaceutical sales and account management. As a Savannah, Georgia resident, Wes brings a wealth of knowledge and valuable insights to his role with DM Clinical.

Stephanie Ailey

Vice President of Business Development

Stephanie Ailey is a highly accomplished industry veteran with over 20 years of experience in program management and healthcare. As the Vice President of Business Development at DM Clinical, she brings invaluable expertise to the national clinical trial site network. Her exceptional track record in building strategic relationships has been instrumental in driving the company’s success. Stephanie’s passion for research is evident in her unique experience of working at the study site that enrolled the first patient globally in a Phase 3 COVID-19 trial. With a commitment to diversity and a dedication to making a positive impact, Stephanie is poised to lead DM Clinical into new frontiers of growth and innovation.

Marianne Tadros, CCPM, ACRP-PM

Executive Director of HR and Organizational Development

Marianne Tadros serves as our Executive 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, Director of Corporate Development, and Director of Human Resources and Organizational 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. 

Hera Arham, MBA, MA

Executive Director of Marketing & Patient Engagement

Hera Arham is the Executive Director of Marketing & Patient Engagement at DM Clinical Research based out of Houston, TX.  She joined DM Clinical with over 10 years of experience in marketing, communications, and business development for various organizations across the nation. She holds an MBA in Marketing and a Master’s in Global Affairs. She is passionate about all things patients and has worked over the last few years to help propel a culture of patient-centricity within the organization through her considerable marketing and patient engagement efforts. As someone who has always viewed marketing and patient engagement through the lens of the patient, she is passionate about amplifying the patient voice and helping to operationalize meaningful change through data and metrics.

Stacey Carden, II, MBA

Executive Director of Quality Assurance

Stacey, a valuable addition to the DM Clinical team, is a high-performing Quality Assurance/Compliance professional with a deep passion for the pharmaceutical industry. With 25 years of progressive experience, he has consistently contributed to organizational growth and success. His expertise spans CRO, Sponsor, and FDA audits, alongside a proven track record of instilling a culture of quality within organizations. Stacey excels in collaborating with cross-functional teams to tackle intricate, high-stakes challenges confidently.

Chandra Tobin

Director of Site Operations

Chandra has been a part of the DM Clinical team for 13 years, with 22 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.

Jennifer Hilton

Regional Director

Jennifer Hilton is a highly skilled Clinical Research Professional with 27 years of experience and nursing background. Jennifer began her journey as a Clinical Research Coordinator and worked her way up- serving in almost every position a site has to offer. She has extensive experience in site operations, having directed both early and late phase research centers all over San Diego county. Her expertise spans across Sites, CROs and Sponsors alongside a proven track record of instilling a culture of quality and cohesiveness among the workplace. As the Regional Director at DM Clinical, she demonstrates exceptional time management, communication, and organizational abilities. In this role, she oversees clinical research operations for multiple sites, guiding teams to achieve successful study outcomes. Her profound understanding of the clinical research industry, paired with her drive for excellence, ensures the highest quality standards for the organization’s research projects.

Robert Miranda, MBA HCM, ACRP-CP

Regional Director, Therapeutics

In April 2023, Robert joined DM Clinical as the Regional Director of Therapeutics, marking a remarkable journey from his initial role as a Clinical Research Coordinator in multiple therapeutic areas to his current leadership position. With a background as an Army Veteran and holding an MBA in Healthcare Administration, complemented by an undergraduate degree in Microbiology and Chemistry, Robert embodies a unique blend of expertise. His unwavering commitment to clinical research, paired with a profound passion for operational strategy, drives him to deliver exceptional experiences for both the DM Clinical staff and its patients.

DM Clinical

Advancing medicine through innovation and dedication.