Larry Thiesen, MD

Dr. Thiesen is a board-certified medical doctor, licensed to serve in both Massachusetts and Rhode Island, with a passion for helping patients achieve optimal health and wellness. With advanced training in endocrinology and anti-aging medicine, Dr. Thiesen has extensive experience in diagnosing and treating hormonal imbalances, metabolic disorders, and age-related conditions.

Dr. Thiesen’s expertise in bioidentical hormone replacement therapy (BHRT) and peptide therapy allows him to provide personalized treatment plans that address each patient's unique needs and health goals at our modern clinics in New England. Dr. Thiesen is committed to staying up-to-date on the latest research and advances in peptide therapy, ensuring his patients receive the most safe and effective treatments available.

Dr. Thiesen’s compassionate and patient-centric approach to care emphasizes education, empowerment, and collaboration. By working closely with each patient to understand their individual needs and concerns, Dr. Thiesen helps patients achieve optimal health and wellness to enjoy a higher quality of life.

AAMG Medicine
Human Optimization
Seeds Scientific
Seeds Scientific


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Education & Training

Dr. Thiesen, renowned in cardiothoracic anesthesiology for over three decades, is devoted to the preoperative, intraoperative, and postoperative care of patients undergoing cardiothoracic surgery and related procedures. After completing a fellowship program at the esteemed Cleveland Clinic Foundation, he achieved board certifications in anesthesiology and perioperative transesophageal echocardiography. Dr. Thiesen's distinguished career features an associate professorship at Brown University, establishing the Southcoast Cardiac Anesthesia group in 2002, and heading the cardiac anesthesia department at Charlton Memorial Hospital.



of medical experience in the field of cardiac anesthesia



long-term relationships built on trust and proven results



performed, ranging from BHRT to hair regrowth, sexual wellness, and aesthetic injections



In anti-aging, ranging from BHRT to peptide therapies and aesthetic injectables


Dr. Larry Thiesen has achieved multiple certifications over his career, including:

  • Advanced Bioidentical Hormone Replacement Therapy certification from the Academy of Preventive and Innovative Medicine
  • Hormonal Health certification from the Hormonal Health Institute
  • Advanced training and certification in intravenous therapy from the International IV Nutritional Therapy

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95 Sockanosset Cross Road Suite 209

Cranston, RI 02920

Call: 401-307-2240

Trusted, Proven

My experience with Cecilia was truly amazing! She demonstrated remarkable knowledge, exhibited incredible patience in addressing all my questions, and established a soothing, safe environment. I wholeheartedly recommend her services, as I achieved exceptional results.

C.G. Google

I am absolutely thrilled with my Genius and Ultra laser combination treatment performed by Cecelia Paige at Thiesen MD. My skin feels tighter and looks more even toned and textured. I even notice a reduction in fine lines and improved acne scarring. I will definitely be returning in the near future for additional treatments.

K.C. Google

I have the privilege of being under the care of Dr. Larry Theisen, and I cannot express enough gratitude for the positive impact he has had on my life. His recommendation of semiglutide proved to be a game-changer, leading to a remarkable weight loss of over 30 pounds. I finally feel like myself again! Dr. Theisen's expertise and personalized approach to my healthcare needs made all the difference. I highly recommend Dr. Larry Theisen to anyone seeking a dedicated and knowledgeable healthcare professional. My journey with him has been transformative, and I am genuinely thankful for the positive changes he has helped me achieve.

Anonymous Office Visit

Excellent Dr. ! Very caring and professional.

B.I. Google

Receiving my laser treatments here with Ceci were by far my best experiences. It was my first time doing laser and I felt no pain and I loved the results and how less hair grew back after just one visit .Definitely coming back. She was definitely head on with the accuracy of the process of the hair growth

M.R. Google


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*Individual results are not guaranteed and may vary from person to person. Images may contain models. MEDICAL DISCLAIMER: The information on this site is for informational and educational purposes only, does not constitute medical advice, and does not establish any kind of patient-client relationship by the use of this website.