Thomas O'Connor, MD

Thomas O'Connor, MD


I created Testosteronology®, a sub-specialty of Internal Medicine after many years of caring for thousands of men on testosterone and anabolic steroids. No other medical specialty offers comprehensive and personalized medical services for men on androgens; Testosteronology is distinct from Endocrinology and Urology. Testosteronology is more specific than Endocrinology, which deals with all hormones in men and women. And it is different from Urology, a surgical specialty that does not focus on the common medical aspects of how androgens effect men. These aspects include cardiovascular complications, adverse effects on red blood cell production (polycythemia), psychological side effects of androgens, and other internal medicine related conditions. Testosteronology offers men from all over the world a safe place where they are respected, listened to, and protected by the most cutting edge, progressive men’s heath physicians on earth.


  • American Board of Internal Medicine Certification - Since 2005
  • Clinical Instructor/Teaching Physician-Department of Medicine-University of Connecticut School of Medicine
  • Physician Preceptor Clinical Longitudinal Immersion in the Community (CLIC)
  • Residency Training – University of Connecticut School of Medicine – 2005
  • Professional Medical Studies – New York Medical College - 2002
  • Pre Medical - Post Baccalaureate – Syracuse University


  • Graduate degree in Exercise Physiology - Master's Degree - Long Island University
  • Author of “Anabolic Doc” column in Muscular Development magazine  2009-2020 and co-host of "Ask the Anabolic Doc" podcast series
  • Contributor to Bill Llewellyn’s Anabolics 11th Edition
  • Author – “America on Steroids – A Time to Heal”, 2017
  • YouTube channel "Anabolic Doc" for anabolic steroid education
  • Featured anabolic steroid expert: Muscle and Fitness, New York Times, New York Daily News
  • Featured expert in Generation Iron’s films: "GI part 3" and "Enhanced 2 the Max”
Kimberly DiBattista

Kimberly DiBattista

General Manager

Kim  is the chief of the office. She wears many hats as she makes sure that every patient is serviced to their 100% satisfaction. From daily patient triage to  fighting for patients medicines getting covered by their insurance, she is Dr. O'Connor's right hand tiger!  Her extreme sharp-wittedness and leadership skills - honed during her many years in the legal services industry  are relied on daily in growing this innovative, cutting-edge practice. Her goal is to deliver the ultimate experience in patient satisfaction by providing unsurpassable attentiveness and the highest level of care. Kim’s personal passion for the fitness/health industry has led her to become a Certified Personal Trainer and she enjoys helping others attain their fitness and wellness goals. Kim also brings an extensive background in law where she maintained the highest performance standards within a diverse range of legal and administrative functions. She is CPR/AED certified.

Kathleen Hoekstra, PhD

Kathleen Hoekstra, PhD

Director of Research

Dr. Kathleen Hoekstra brings to the team 30 years of experience in social science and psychotherapy education, practice and research, including academic and clinical appointments at Columbia University, Fordham University and Lehman College of the City University of New York. Her practice and research interests have been focused on examining the complex interaction of individual and societal factors in human behavior, and on practices and policies which can foster more adaptive transactions between these. Bringing that layered and dynamic perspective now to healthcare, Dr. Hoekstra will be assisting Dr. O’Connor in his ongoing research on ways to improve patient outcomes.

Wendy M. O'Connor, B.S.N., R.N.

Wendy M. O'Connor, B.S.N., R.N.

Clinical Nurse Executive

Wendy is a registered nurse in Connecticut and Florida and has worked as a cardiac nurse in the hospital setting since 2007. Dr. O’Connor selected her to be his clinical nurse executive and she has taken on the duties of caring for his patients’ clinical needs. She enjoys working with the men that come aboard the practice and educating them about cardiovascular and preventive healthcare. She also enjoys talking to potential patients about the full range of Testosteronology services. Her vast clinical and administrative experience makes Wendy a skilled and empathic interpreter, caring for Dr. O’Connor’s patients medically and clinically.

Certified ACLS and BLS/AED

Baccalaureate of Nursing from Sacred Heart University

Diploma of Nursing from Bridgeport Hospital School of Nursing

Member of American Nurse Association, Connecticut Nurses Association and Prevention Cardiovascular Nurses Association

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Dr. O'Connor is the coolest, kindest and most caring Doctor I have ever met and his staff Wendy and Kim are amazing. You immediately feel like you are part of a family. The only regret I have is that I didn't find Dr. O'Connor sooner.