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Meet Our Team: Texas Hemorrhoid Institute

Welcome to Texas Hemorrhoid Institute, where exceptional care and unparalleled expertise converge to offer you the highest standard of treatment. 

Our team includes experienced providers, dedicated vascular specialists, physician liaisons, and medical professionals, all committed to delivering comprehensive hemorrhoid care tailored to your unique needs. 

Whether you're seeking relief from hemorrhoids or other vascular conditions, trust the expertise of the Texas Hemorrhoid Institute to provide lasting results and guide you toward optimal health and wellness. Your journey to long-term relief begins with us.

Our Team

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Heather Kliesing, Lead Registered Vascular Technologist

Meet Heather, a seasoned registered vascular technologist with over 15 years of expertise in vascular ultrasound. Her cheerful demeanor and compassionate care brighten our Clear Lake office. 

Outside work, Heather cherishes moments with her husband and two sons, indulges in outdoor activities, plays with her dogs, tends to her garden, and explores new destinations through travel.


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Robert Ackerman, Registered Vascular Technologist

Born and raised in Chicago, Rob settled in Dallas back in 2007, where he lives with his wife of nearly 20 years, his two teenage boys and his chihuahua. He has been working in healthcare for over 20 years, first as a licensed doctor of chiropractic before eventually making the switchover to sonography. “Working in a variety of clinical settings in my career has given me a unique perspective on the different types of patients you see, and how my interactions with them were often dictated by those settings. You really have to tune in to each patient as an individual.”

Starting in 2013, Rob focused his attention to exclusively vascular ultrasound where he worked along side vascular surgeons in multiple clinics around DFW. It was during this time when he developed his expertise in various areas within vascular ultrasound, particularly in the diagnosis and treatment of varicose vein disease. Rob has assisted in thousands of venous procedures, and he has trained countless other ultrasound techs to do the same. “I believe that it is just as important to recognize when a patient is not a suitable candidate for treatment as well as when they are. Integrity and honesty must come first.”

In his spare time, Rob enjoys traveling, dining, professional sports (I bleed Cubbie Blue),gathering with friends and has occasionally been spotted playing pickleball. More than anything, he enjoys watching his son, a budding small forward, play basketball for JJ Pearce High School - Go Mustangs!


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Kelly Dramberger, Physician Liaison

Houston-born Kelly grew up in East Texas and earned a degree in Business Marketing from Stephen F. Austin. With over 12 years in healthcare business support and 15 years in hospitality, she merges her expertise to prioritize patient care. 

In her downtime, Kelly delights in hosting events, traveling, fishing, and reading. Joining our team aligns perfectly with her passion for people, commitment to excellence, and nurturing disposition.


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Diana Martinez, Physician Liaison

With a decade of experience as a successful physician liaison, Diana brings a unique perspective to healthcare. 

A University of Houston alum with a major in Anthropology and a minor in Ancient History & Classical Studies, she's passionate about bridging cultural gaps. Diana prioritizes patient education for wellness and enjoys connecting with people through her sunny disposition.

In her free time, she indulges in hobbies like traveling, kayaking, and watching K-dramas. Diana's dedication to community and healthcare shines through her volunteer work and support for under-resourced communities.


Carmenza Amell, Physician Liaison

Carmenza Amell graduated from the University of Texas at Austin with a Bachelor's degree in Business Administration. As a marketing major, she excelled in her studies and graduated magna cum laude. She has experience in the healthcare industry including pharmaceutical sales, clinical research patient recruitment, and has worked as a Physician Liaison. Carmenza is originally from Panama, Central America and has lived in the U.S.for many years. She is married, has a beautiful daughter, and enjoys caring for her pampered dog named Ojo. Carmenza's hobbies include reading, writing music, singing, exercising, and dancing. She speaks Spanish and French fluently and is looking forward to her new assignment as Physician Liaison for Texas Endovascular in southeast Houston.


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Jessica Bolin, Dallas Physician Liaison

San Antonio native Jessica Bolin's career took off after graduating from UTSA, where she discovered her passion for healthcare marketing. With eight years of experience, she excels at connecting people with the care they need. 

When not working, Jessica enjoys exploring Dallas with her husband and two children, creating cherished memories in the bustling city.


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David Fabro, Dallas Practice Manager

Originally from Southern California, David recently made the move to Texas in 2022 with his partner of 15 years and their three boxers. 

With a background as a licensed vocational nurse since 2007, he transitioned into clinical operations in 2017. David is dedicated to creating memorable patient experiences through compassionate and comprehensive care. He values building relationships and actively listening to patients and staff to foster a safe and effective environment. 

Excited to be part of our team, David looks forward to contributing to the practice's growth and success.

In his free time, he stays active by hitting the gym and participating in obstacle course races. David is also an avid collector of movies, with a particular love for horror flicks.


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Emily Lopez, Director of Practice Operations

Emily, a Houston native, brings extensive experience as a healthcare administrative professional. Known for her warmth and friendliness, she is dedicated to ensuring optimal patient and colleague outcomes. 

Starting from the front office, Emily has advanced through diverse roles, becoming a compassionate leader and mentor. She values teamwork and cultivates strong relationships to deliver outstanding customer service. 

Outside of work, Emily treasures family time, outdoor adventures, movie nights, and staying active through exercise.

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