Clinical Trial Staff

Dedication, Integrity, Resourcefulness, and Professionalism

Meet the knowledgeable, experienced staff at Aventiv Research that are responsible for conducting clinical research on medication and medical devices.

Clinical Research Coordinators

A Clinical Research Coordinator is responsible for conducting clinical trials using Good Clinical Practice (GCP). They are monitored by an Institutional Review Board (IRB ) and are under the supervision of the Principal Investigator (PI).

Built on the core values of dedication, integrity, resourcefulness, and professionalism, Aventiv Research embraces a visionary, entrepreneurial spirit that compels our ambassadors to blaze new trails with proprietary systems and processes.

Our Credo:

Dedication: To our company, our patients, and our co-workers. We all strive for the same goal and we do what we need to do to achieve it, all while offering unending support to our coworkers and patients.

Integrity: Doing the right thing when no one is watching. All Aventiv Research employees have strong moral principles.

Resourcefulness: Aventiv Employees have versatile skill sets. By doing what we are good at, as individuals and as a team, we are able to find clever ways to overcome boundaries and obstacles.

Professionalism: Every Aventiv Research employee is held to the highest behavioral, ethical, and social standard. We achieve excellence by conducting our work with professional competence and expertise.

Principal Investigators

Dr. Samir Arora

President and Medical Director, Principal Investigator

Dr. Arora went to medical school in Manipal, India. He then did his residency at Hamot Medical Center in Erie PA. During his residency he worked on multiple original research studies one of those on breastfeeding received national attention garnering interviews on major networks and newspapers. Since then Dr. Arora has been involved in clinical research acting as principal investigator or sub investigator on over 100 studies. He holds the prestigious CPI designation by the ACRP. He is the president and medical director of Aventiv Research and is actively involved in the running of the company.

Dr. Sridhar Guduri

Internal Medicine, Principal Investigator

Dr. Sridhar Guduri has been with Aventiv Research since 2007. He has since become the Principal Investigator at Dublin Clinical Research. Dr. Guduri has been in practice for more than eleven years and is board certified in Allergy /Immunology as well as Internal Medicine. He enjoys doing research because it allows him to be on the cutting edge of developing new medications and allows him to offer patients treatments that are not readily available. Dr. Guduri has a wife and two daughters. Apart from his private practice and research, he has a passion for education and volunteers as a math teacher for Kindergarten and 2nd graders.

Dr. Roy St. John

Internal Medicine, Principal Investigator

Roy St. John, M.D. F.C.C.P. attended medical school and completed his residency at the Ohio State University. Dr. St. John specializes and is board-certified in pulmonology and critical care medicine and has over 25 years of experience in the field. He was awarded the “Lifeline of Ohio Physician of the Year” in 2012 and has a rich research background including clinical research in sepsis and pneumonia and was the first provider of bronchial thermoplasty for patients with severe asthma in Central Ohio. Dr. Roy St. John resides in Columbus and enjoys spending time with his wife and their 3 children, reading, playing golf, and is an avid Ohio State Buckeye fan.

Dr. Jess DeMaria

Dermatology, Principal Investigator

Dr. Jess DeMaria specializes in general dermatology and dermatologic surgery and was recently ranked as one of the top ten dermatologists in central Ohio. Dr. DeMaria earned his undergraduate degree, Summa Cum Laude, from The University of Toledo in 1981. In 1985, Dr. DeMaria earned his medical degree from The Ohio State University. He was initially Board Certified by the American Board of Dermatology in 1991 and continues to maintain his board certification. He is currently a principal partner at Central Ohio Skin and Cancer.

Dr. DeMaria is a Fellow of the American Academy of Dermatology and a member of the American Medical Association, the Ohio Dermatological Society, and The Thompson Society for Scholarship Endowment at The Ohio State University. He’s also a past officer of the Central Ohio Dermatological Society and served as a member of the Ohio Dermatologic Association Board of Trustees. An avid sports enthusiast, Dr. DeMaria is the dermatology consultant for The Ohio State University Athletic Department, the Columbus Blue Jackets, and the Ohio High School Athletic Association’s state wrestling tournament.

Dr. Sarah Artman

Obstetrics and Gynecology, Principal Investigator

Dr. Artman is Board-Certified by the American Board of Obstetrics and Gynecology and has provided specialized care for women of all ages in her private practice for more than 20 years. She has repeatedly been judged by her peers to be among the Best Doctors in America®, and has been recognized by Columbus Monthly Magazine.

Dr. Artman graduated from Cornell University and from The Ohio State University College of Medicine. She performed a 4-year residency in Obstetrics and Gynecology at Ohio State University Medical Center. During college, medical school, and residency, Dr. Artman participated in scientific research and as a resident she received several awards for research activities. She joined Aventiv Research to use her clinical background and her understanding of research and statistical analysis to further advance scientific understanding of Women’s Health.

Dr. Mandeep M. Sahani

Internal Medicine, Principal Investigator

Dr. Sahani graduated alongside Dr. Arora from Kasturba Medical College in India. From there, he completed his fellowship at Loyola University.

He currently works in Mesa, Arizona as well as several other locations around the area. Specializing in Nephrology, Dr. Sahani is affiliated with multiple medical centers as well as spending time treating patients on local Indian Reservations.

He has one daughter with his wife, who is also a practicing physician.

Dr. Jennifer Nash

Dermatology, Principal Investigator

Dr. Jennifer Nash specializes in general, surgical and cosmetic dermatology. She obtained her undergraduate degree from The Ohio State University College of Pharmacy, graduating summa cum laude. She earned her medical degree from The Ohio State University College of Medicine, graduating magna cum laude. She completed her internship year at Riverside Methodist Hospital in Columbus, Ohio and her dermatology residency at Henry Ford Hospital in Detroit, Michigan, where she served as Chief Resident. Dr. Nash has been a board-certified dermatologist since 2001.


Grazia Cannon, MSN CNP

Family Medicine, Sub-Investigator

Grazia brings to Aventiv over 10 years of nursing experience. After graduating from Mount Carmel College of Nursing with her BSN, Magna Cum Laude, she gained experience in both ICU and oncology nursing.  She then obtained her Master of Science in Nursing from Otterbein University. As an AANP board certified Family Nurse Practitioner, Grazia cared for patients in the outpatient setting before joining the Aventiv team in 2016. As a Sub-Investigator, Grazia sees patients at our Columbus and Dublin locations, and brings a wealth of knowledge and support to all our offices. Outside of providing medical care to our patients, Grazia sits on the Leadership Team as the EOS Integrator. Working side by side with our President, Dr. Arora, she helps to execute the business plan that was created with exponential growth as the goal.

Sandra Gaiser, DNP, FNP

Internal Medicine, Sub-Investigator

Sandra earned a BSN from Arizona State University and worked as an RN in oncology for several years, and later worked in an Emergency Department for 10 years. She was accepted into Grand Canyon University’s Master of Science in Nursing program, where she earned a degree as a Family Nurse Practitioner. As an AANP board certified nurse practitioner she specialized in Nephrology and Emergency Medicine. In 2017, she earned a Doctorate in Nursing, focusing her research study on “Improving Follow-up Care for Post Hospitalized Patients Diagnosed with Acute Kidney Injury”. Sandra continues her work in nephrology, and has also pursued her interest in research by joining the Aventiv Research team, to help the advancement of medicine by studying effects of medical therapies, to improve patient care and outcomes. She is passionate about education, and as adjunct faculty at GCU, teaches advanced pathophysiology to graduate nursing students.


Jeff Bruner

Chief Financial Officer

Jeff has over 30 years of public and industry accounting experience. In addition to serving as the CFO for Aventiv Research, Jeff leads the CFO Services practice line at Brixey & Meyer. Earlier in his career, he spent 7 years as Controller and CFO of two separate companies with additional tenures at various Fortune 500 companies. As CFO, Jeff leverages this vast experience to provide Aventiv with a strategic financial partner where he provides financial analysis and recommendations that optimize value for the company. Jeff has extensive experience in several industries including manufacturing, healthcare, nonprofit, and B2B service companies. He holds a degree in finance from Purdue University and is a Certified Management Accountant (CMA).


Meg Rood

Director of Operations and Consulting

Meg was born and raised in Akron, OH and moved to Columbus after high school to attend The Ohio State University. After graduating from college with a focus in Molecular Genetics and Anthropology, Meg pursued a position with Aventiv Research. During her eight years of employment with the company she has progressed from a research assistant, to coordinating clinical trials, and to finally serving as the Director of Operations. As the Director of Operations, she oversees the company’s five sites in Ohio, Arizona, and Pennsylvania. Her duties include regulatory management, study and site start up, conflict management, SOP development and implementation, and conduction of qualification visits.

Business Development

Rachel Flora

Business Development Manager

Rachel Flora is our Business Development Lead and has been with Aventiv Research for a total of 4 years. She has 5 years of experience in the clinical research field and has worked on the Site, CRO/Sponsor and Vendor side. She started at Aventiv in the fall of 2014 as a Research Assistant, transitioned to a Study Coordinator, and then into the Executive Assistant role to Dr. Arora. In the winter of 2017 she moved to New Jersey with her fiancé to be closer his to family and also to explore a career with PRA Health Sciences and Bayer HealthCare as an In-House Clinical Research Associate. While that was fun while it lasted, both her and her fiancé missed Columbus and decided to move back in the Spring of 2018. With the experience she gained in New Jersey, a role in Business Development seemed like a great fit. Her duties include generating new business, contract negotiation, regulatory management (for the Dublin site) and site qualification visits.

Clinical Staff

Clinical Research Coordinators:

Our Clinical Research Coordinators are responsible for the organization, coordination, and overall integrity of the trials that we participate in. Their responsibilities include Obtaining participant informed consent, Scheduling tests and procedures, Collection of clinical research data, and Ensuring accuracy of documentation.

Clinical Research Assistants:

Our Clinical Research Assistants help our Coordinators with the activities of each study. Their duties may include, Blood Draws, ECG, Sample Processing, and Data Entry. All Research Assistants are IATA certified as well as GCP trained.

Recruitment Coordinators:

Our dedicated team of recruitment coordinators work hard at pre-screening and screening patients, making sure that they are the right fit for our enrolling studies.