Katy – Contemporary Endodontics

Welcome to Contemporary Endodontics Katy

We are conveniently located on 19235 Katy Freeway Suite 300 B, Houston Tx 77094

Phone: 281-64 ROOTS (76687) Fax: 281-647-9997 Email: katy@ceteamendo.com

Dr. Wan and the team feel honored to provide modern, comprehensive dentistry for families in Katy. As an Endodontics specialist, we offer a wide range of services that will meet every need. We’re happy to be a resource for you and your loved ones when it comes to your oral health!

Contemporary Endodontics | Houston Endodontist | Dr. David Wan



Dr. David S. Wan grew up in Houston, Texas. He attended the University of Texas in Austin, where he received a Bachelor of Arts in Biology and a minor in Chemistry. He matriculated into the University of Texas Houston Dental Branch and graduated in the top of his class. He continued his education at UTDB and was awarded his specialty certificate in Endodon¬tics and a Masters in Science.

Dr. Wan has received extensive specialty training in diagnosis, root canal treatment, and microsurgery. He utilizes cutting-edge technologies and advanced techniques in root canal therapy. His armamentarium includes the use of the surgical microscope, rotary instrumentation, ultrasonics, thermoplasticized obturation, and Cone-beam computed tomography.

Upon graduation from his endodontic training, Dr. Wan was an associate in private practice in Dallas, TX before returning back to his roots in Houston, TX where he started Contemporary Endodontics in the Fall of 2010. Dr. Wan understands patients’ anxiety associated with root canal therapy. He has extensive training in conscious sedation to help provide a comfortable experience for his patients. He has created a tranquil environment in the practice setting with the number one goal of maintaining patient comfort. He has per¬formed over 10,000 root canal procedures and surgeries to date and continues to remain very passionate in the field of endodontics.

Dr. Wan is an active member of the American Association of Endodontists, and he is also a member of Omicron Kappa Upsilon National Dental Honor Society. He enjoys spending quality time with his wife Angelina and two sons; Aiden and Ashton.



Dr. Jesse Rosario grew up in Orlando, Florida. He was a firefighter in the city of Ocoee, Florida for seven years.  While working as a firefighter he attended the University of Central Florida, where he received a Bachelor of Science in Molecular Biology and Microbiology.  Dr. Rosario received his Doctor of Dental Medicine degree from the University of Alabama at Birmingham School of Dentistry, where he also earned an Excellence in Prosthodontics award for displaying superb skill in the diagnosis and clinical treatment. Only one such award is given to each graduating class. After graduating from dental school he returned to Orlando, Florida, and practiced general dentistry for some time. As a general dentist, he realized he had a passion for endodontics and decided to further his endodontic knowledge and skill by becoming a specialist.  Dr. Rosario then returned to the University of Alabama at Birmingham School of Dentistry to complete his specialty training in endodontics.

Dr. Jesse Rosario is an active member of the American Association of Endodontics and the American Dental Association. In his free time, he enjoys exercising, reading, watching movies, and spending time with family and friends

Contemporary Endodontics | Houston Endodontist | Dr. Jesse Rosario
Contemporary Endodontics | Houston Endodontist | Dr. Armando Mejia



Dr. Armando R. Mejia obtained his Bachelor’s Degree in Science at the University of P. R. with Magna Cum Laude honors. Then he graduated from the University of P.R. Dental School at the Medical Science Campus in 1981 receiving his DMD degree.

Dr. Armando R. Mejia practiced general dentistry for fourteen years and then decided to enhance his professional career by attending the Henry Goldman School of Dentistry at the Boston University, under the guidance and mentoring of Dr. Herbert Schilder. This was where he was awarded a specialty Certificate in Endodontics and a Master in Science in Dentistry in 1998. He participated in research studies of T-Cells and pro-inflammatory mediators cells on lesions of endodontic origin.

Dr. Armando R. Mejia is a member of the American Dental Association, American Association of Endodontists, Texas Dental Association and the Greater Houston Dental Society.

Dr. Armando R. Mejia has been practicing endodontics in the Katy and Houston communities for the past twenty years. Dr. Armando R. Mejia lives in Katy with his wife and two sons. On his time off he enjoys golfing and fishing. Dr. Mejia speaks English and Spanish fluently.



Dr. Ji Wook Jeong was born and educated in Seoul, South Korea. He earned Dental degree at Kyunghee University in Seoul, South Korea in 2001. He practiced at his private clinic for over ten years in Seoul and experienced a number of clinical cases and challenges as a general dentist. During practice, he put his effort in mainly endodontics and implant surgery.

Dr. Ji Wook Jeong obtained the credential associate fellowship of the American Academy of Implant Dentistry (AAID) in 2008. Then he was teaching as an instructor for implant surgery at Maxicourse of AAID in South Korea. However, he wanted to improve his knowledge about Endodontics and then came over the US. Finally, he earned the postgraduate degree (MSD) and the specialty of Endodontics in the University of Texas Health Science Center at Houston School of Dentistry (UTHCS SOD) in 2017. He is the assistant professor of the UTHSC and also a member of “Contemporary Endodontics”.

Contemporary Endodontics | Houston Endodontist | Dr. Ji Wook Jeong
Contemporary Endodontics | Houston Endodontist | Dr. Hira Assad



Dr. Hira Assad was based in Dubai before being accepted at the prestigious University of California, Los Angeles (UCLA) Endodontics Residency Program which is accredited by the Commission on Dental Accreditation of the American Dental Association and affiliated with the Ronald Reagan UCLA Medical Center. She received her Bachelor of Dental Surgery from Khyber College of Dentistry and graduated with honours. Dr. Assad continued her passion to become an Endodontic specialist at UCLA where she received training under world-renowned professors and clinicians.

Dr. Assad endeavours to ensure that her patients fully understand their treatment with clarity. She takes pride in providing painless root canals, ensures that her patients have an anxiety-free experience and are as comfortable as possible with all stages of the treatment. Dr. Assad is an ethical, caring, and conscientious doctor who is fully invested in the welfare and well-being to provide the highest standards in endodontic care such as root canal treatment and microsurgery.

Dr. Assad maintains active membership in the American Association of Endodontics, and other professional associations and stays up to date with respect to the latest treatments and technology in her fields on interest. Dr. Assad has co-authored papers and presented posters at professional national and international Endodontic conferences and earned recognition.

Dr. Assad is married with a daughter. At home, she loves to spend time with her family, paint, design fabrics and cook for friends and family.

Online Patient Forms

Planning your visit to our Katy office? Filling out our patient forms before your appointment will ensure that your time with us is as simple and smooth as possible. The information you provide in these forms will help our team get to know you and your family before you even walk through the door in Katy. Don’t wait, fill out our patient forms now!

Your Financing Options

For patients who would like to finance their procedure, we work with CareCredit, one of the most reliable healthcare financing companies in the U.S. We do our very best to help patients bring the cost of care into their budget!

Contemporary Endodontics | Houston Endodontist | Katy Exterior


At Contemporary Endodontics, we accept most major insurance providers. We understand that many patients’ choices are dictated by the type of insurance they have and we want to be able to offer the highest quality of care to everyone! We also process and manage the sometimes troublesome insurance claims for you. Our team is highly trained and will do everything in our power to make sure that you are taking advantage of your benefits.

We accept the following Insurance Plans: