Advanced Gastroenterology Associates

Center Information

Joanne Root, CCRC
Clinical Research Coordinator
Advanced Gastroenterology Associates
34041 US Hwy 19 North, Suite A
Palm Harbor, FL 34684

Currently Enrolling Trials

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Therapeutic Areas

Infections and Infectious Diseases


Here at Advanced Gastroenterology Associates, with two conveniently located offices in beautiful Palm Harbor and Dunedin, FL, we specialize in the most advanced procedures and technologies while at the same time taking a conservative approach to care. Although our physicians are all board certified in both Gastroenterology and Internal Medicine, we specialize in the body’s internal digestive organs, utilizing the most up to date endoscopic techniques that offer less inconvenience and a faster recovery time for our patients.

Our physicians and staff work together on all clinical trials and we have a dedicated and highly motivated Clinical Research Coordinator who offers the highest quality patient care, attention to accuracy and Good Clinical Practice in conducting research.


The following is a list of conditions frequently encountered in our practices(this is only a partial list):

  • Ulcerative Colitis
  • NSAID associated Gastric Ulcers
  • Hepatitis C
  • Crohn's Disease
  • Duodenal Ulcers
  • H. Pylori Eradication
  • Erosive GERD
  • Non Erosive GERD
  • Erosive Reflux Esophagitis
  • Erosive Esophagitis
  • Irritable Bowel Syndrome
  • Dyspepsia
  • Acute Diverticulitis
  • Chronic Constipation

For over 15 years now we have been working with Sponsors like Johnson & Johnson, Centecor, Tibotec, Astra Zeneca, HMPL, Shire, Proctor Gamble, Alizyme Therapeutics, Promethius and Ockham and CRO's such as Quintile, Icon and Covance.


Our study office is located in Palm Harbor, FL on US Highway 19 North, with easy access to public transportation and ample parking.

This office features a dedicated exam room, laboratory with centrifuge, freezer, secure drug closet, separate and secure study materials office, and storage area for lab supplies. There is ample monitoring space with access to a photocopier, phone, fax, and internet. Monitors are welcome to use our kitchen area which features a fridge and a microwave.


Jawahar L. Taunk, M.D. is a Board Certified Gastroenterologist who has been in private practice since 1993 and conducting research studies for over 15 years.

Sanjiv P. Amin, DO is a Board Certified Gastroenterologist who has been in private practice since 2003 and conducting research studies for over 5 years.

Mirela Onea, M.D. is Board Certified by the American Board of Internal Medicine, Qualifying for Gastroenterology G.I. Her experience includes 7 research publicaitons and her specialties are Upper Gl Endoscopy/BRAVO PH capsule. She has won awards, such as five Governmental Scholarships in recognition of academic achievement and the Merit Scholarship for highest GPA in medical school academic year.

To date this office has participated in over 40 clinical studies including: 4 Phase-II studies, 32 Phase-III studies and 5 Phase-IV studies in many different digestive disorders.


Joanne Root,CCRC – Joanne is a Certified Clinical Research Coordinator through ACRP since 2009. She started working in Clinical Research Feb of 2001 and is certified in NIH, ICH-GCP, Biological Substance, Infectious Disease and Related Hazard Shipping. Joanne’s current study experience involves Gastroenterology, Rheumatoid Arthritis and Oncology. She holds an Associate’s Degree in Human Services.

Jennifer Eskew-Park, MA, CRC – Jennifer started working in Clinical Research July of 2014 and is certified in NIH, ICH-GCP, Biological Substance, Infectious Disease and Related Hazard Shipping. Current study experience relating to Gastroenterology only. She has been an active Medical Assistant/Phlebotomist since 2006 and also holds an Associate’s Degree in Health Service Administration.


Our patient database is extensive as we are in a suburban area with an approximate population of 200,000. The community is a good mix of Caucasian, Hispanic, African-American and Asian with a positive attitude towards participation in clinical research studies.


We utilize central IRB with our various trials and we do not require local IRB approval for inpatients.

Contact Center

If you are interested in contacting this center to discuss clinical trials, please complete and send the email form below. A representative from the research center will then follow up with you.