Our Team


David Tigtig, RN, MSN, FNP-C


David Tigtig, RN, MSN, FNP-C, is an experienced and compassionate board-certified family nurse practitioner at Healing Hearts Clinic in Conroe, The Woodlands, and Huntsville, Texas. David has more than seven years of experience in direct patient care. He enjoys helping cardiac patients with heart conditions, tests like echocardiogram, preoperative evaluation, and much more.

David earned his bachelor’s degree in nursing at the University of Texas in Arlington. He completed his master’s degree to become a family nurse practitioner at the University of Cincinnati. David is an active member of the American Association of Nurse Practitioners.

As a nurse practitioner at Healing Hearts Clinic, David performs exams, interprets studies, and works closely with a supervising cardiologist to establish and coordinate an effective plan of care for all patients. Heart health is a passion for David, and he loves helping his patients along the road to wellness. 




Nicole Dorris, NP-C

Nurse Practioner

Nicole Dorris, RN, NP-C, is a board certified adult gerontology nurse practitioner at Healing Hearts Clinic in the Conroe, Woodlands, and Huntsville area. Nicole began her career as a registered nurse in 2006 with her primary acute care experience working with cardiac patients recovering from heart surgery, cardiac/peripheral angioplasty, heart arrhythmias, hypertension, and congestive heart failure. She also has experience working in the cardiac catheterization department, urgent care, and home health. Cardiology has always been a first love for Nicole and she is excited to be able to continue that at Healing Hearts Clinic.

Nicole earned her bachelor’s degree in nursing from the University of Texas Medical Branch in Galveston in 2006. She completed her master’s degree in Adult-Geriatric Primary Care in 2021 at the University of Texas Health Science Center and is currently board certified. Nicole is a current member of the Texas Nurses Association and the American Association of Nurse Practitioners. Nicole has a passion for learning and continues to participate in continuing education with an intent of being a lifelong learner.

Nicole values each patient’s individual needs and works closely with her supervising physician to create a care plan that will help them reach their health goals and improve patient outcomes.

Nicole is originally from Houston and currently lives in the North Houston area with her husband and two sons. She enjoys spending times with her family, watching the Houston Astros, and staying physically active.




David Bennett, MSN, APRN, AGACNP-BC

Nurse Practioner

David Bennett is a board-certified Adult Gerontology Acute Care Nurse Practitioner. As part of the team at Healing Hearts Clinic he will be caring for patients in the inpatient arena at Houston Methodist The Woodlands, Memorial Hermann The Woodlands, and HCA Conroe Hospitals. With more than 20 years' experience in the healthcare area, David brings his love of cardiology, teaching and patient care to our practice. From treating life threatening heart conditions in the field as a Paramedic, to treating medical emergencies in the hospital in the nursing role, to then further treating patients in the Cardiac Catheterization Lab; David brings a broad range of experience and knowledge to the team. David is passionate about educating his patients on a better, healthier lifestyle that will work for them and helps them understand their heart conditions. Being your Cardiology Nurse Practitioner is his dream come true.







Toni Vollmer, NP

board-certified Nurse Practitioner

I began my nursing journey in 1997, specializing in intensive care, and later expanded my horizons by graduating as a Nurse Practitioner from Indiana Wesleyan University in 2017. With a solid foundation in hospital medicine, I spent three and a half years as a hospitalist before returning to my hometown in Texas to serve as a Family Nurse Practitioner for two years.

Excited to embark on a new path in cardiology, I am dedicated to providing top-notch care to my patients. As a proud member of the American Association of Nurse Practitioners (AANP) and board-certified by the AANP Certification Board (AANPCB), I am committed to delivering evidence-based, compassionate care. Under the guidance of Dr. Preeti Desai, in the clinic along with rounding at Houston Methodist The Woodlands and HCA Conroe, eager to contribute to the cardiovascular health of our community.

My goal is simple: to empower my patients to lead healthier lives through comprehensive, patient-centered care. I am honored to be entrusted with their well-being and strive to uphold the highest standards of excellence in everything I do.




Amanda Deering, MPAS, PA-C


Amanda Deering, MPAS, PA-C, is a board-certified Physician Assistant at Healing Hearts Clinic in Conroe, The Woodlands, and Huntsville, Texas. She is passionate about providing patients with the upmost compassionate, quality care.

Amanda attended the University of Mississippi, where she was a member of the women’s golf team. She graduated Summa Cum Laude with her Bachelor of Science in Biomedical Sciences, and went on to attend Christian Brothers University earning her Masters in Physician Assistant Studies. She is board certified by the NCCPA and licensed by the Texas Board of Medicine.

As a Physician Assistant at Healing Hearts Clinic, Amanda performs exams, interprets studies, and collaborates with Dr. Arindam Banerjee to establish and create an effective plan of care for patients. She enjoys educating patients regarding their heart health and the ways they can work to improve it.

Amanda lives in Conroe with her boyfriend, JP, and their two dogs. In her spare time, she loves golfing, traveling, cooking, and exercising.


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