Health team
Our practitioners have over 40 years of combined experience in integrative medicine.
“This practice truly cares about your well-being. They are fully engaged when you are in the appointment and love that they will also correspond through the portal and by phone.”
Beverly G.
Meet our PRACTITIONERs
Ronald Manzanero, MD
Integrative Medicine Physician
Areas of expertise:
Cardiometabolic conditions like Type 2 Diabetes, weight concerns, and high cholesterol
Thyroid conditions (hypothyroidism, Hashimoto’s, Grave’s Disease) or symptoms (fatigue, “brain fog”, insomnia, etc), including medical management.
Dr. Ronald Manzanero is a physician with over 30 years of experience in integrative medicine.
He is the co-founder of the Center for Collaborative Medicine (CCM), and the former co-founder of Modern Medicine and Modern Thyroid.
Dr. Manzanero graduated from the University of Texas Medical Branch in 1984 and completed his residency training in Family Medicine in 1990 at the University of Massachusetts Medical Center.
His interest in alternative holistic medicine began in his pre-med days in college. Since becoming a medical doctor, Dr. Manzanero has spent many years studying nutrition, functional medicine, intravenous therapies, and completed a 4-year masters course in classical homeopathy.
Dr. Manzanero has shared his knowledge and wisdom with many successful local practitioners, instructing them on the art of practicing integrative medicine.
Sara Klopp, PA-C
Board-Certified Physician Assistant
Areas of expertise:
Thyroid conditions (including prescription management)
Hormonal imbalances (pre-and-post-menopausal)
Mood Imbalances
Metabolic Syndrome: high blood pressure, high blood sugar, excess body fat, and issues with cholesterol or triglyceride levels.
Sara is a board-certified physician assistant providing healing and medical care to the Austin community since 2004. She received her Master’s Degree from the University of Oklahoma. Sara has worked with Dr. Ron Manzanero since their prior days in 2017 at Modern Thyroid Clinic.
“I have felt so fortunate to help others in my career, working in many different areas of medicine including primary care, gastroenterology, and internal medicine, where I managed many people with acute and chronic issues, including thyroid disorders, diabetes and hormonal concerns.
I am passionate about the more holistic and integrative way of practicing medicine.
Evaluation involves so much more than just checking basic labs and giving out pills, and I am here for you to put those puzzle pieces together!”
Sara Klopp, PA-C
Dr. Jeremiah Havins
Family Medicine, Internal Medicine, and Cardiology Physician
Dr. Havins specializes in Family Medicine, Internal Medicine, and Cardiology. His experience and knowledge in these areas has allowed him the ability to treat different health needs, and he’s excited to be able to do this with our patients!
He is an East Texas native who grew up on a small town farm. He realized early that hard work and diligence is of utmost importance for success. He is a graduate of St. George’s University School of Medicine. He performed a great deal of his medical training in Brooklyn, New York before completing an Internal Medicine residency and Cardiology fellowship at the University of Texas Medical Branch in Galveston. He then completed his Interventional Cardiology fellowship at Albert Einstein in Philadelphia, Pennsylvania. During training, he won the prestigious Gold Doc award for his compassionate, humanistic care.
He moved to Waco from his prior practice in Clear Lake, Texas. He sought a more family oriented lifestyle away from the hustle and bustle of the city. He enjoys spending time with his lovely wife, and his adoring children. He also enjoys football, weight lifting, and outdoor activities.
Thyroid Gurus
Telemedicine-Based Practice
Experts in Thyroid, Cardiometabolic Conditions, and Female Hormonal Imbalances
Patient Testimonials
We have been patients of Dr. Manzanero for many, many years because he is a doctor with vast knowledge in many areas. He is a master in piecing medical information together and spending time discovering the root of internal imbalances or ailments.
Doctor Manzanero is thorough and follows up to make sure whatever he prescribes is working for the patient.
It took us many years to find a personal doctor, had given up on doctors who’s first concern is running a “business”.
We feel that Dr. Manzanero always finds the right balance so his patients can continue to living their lives with vitality.
Debra S.
Ms. Klopp was very attentive, insightful, and thorough. She provided reasonable, sensible suggestions and seems to understand what all may be contributing to my issues. I am hopeful that I will see improvement in my health with her help.
Happy Patient
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