Meet Our Doctor

James A. Duncan, DDS “Dr. Jim”

Dr. Jim

Dr. Jim has been practicing in the area since 1996 and his goal as a dentist is to be more than a “Molar Mechanic.” He strives to help others understand that oral health is more than a pretty smile—it is part of a bigger picture: our complete health for our entire body. He believes that a healthy body and healthy living make for a happy life. Prior to his dental career, Dr. Jim graduated from Corpus Christi State University in 1992 with a bachelor’s of science degree in biology. He then attended the University of Texas Health Science Center – San Antonio and graduated in 1996 with a DDS degree. Jim has three children, and in his free time, he enjoys backpacking, hiking, and camping. He is a member of the ADA, TDA, NVDDS, CCDSC, and WCLI, and has also received his Mastership in Lasers.

Meet Our Team

Our team at Duncan Dental Studio is delighted to work alongside our dentist, Dr. Duncan, to give you and your family members the optimal health and beautiful smiles you deserve. With our dental care in Portland, Texas, we are able to restore the health of your oral cavity and enhance the appearance of your smile. If you would like to learn more about our friendly dental team and the ways we can help you, we invite you to read our bios and call our office today!

Christi Cantrell – Registered Dental Hygienist


Christi has been practicing dental hygiene for 24 years. She graduated from Del Mar college in 1991. She is very excited to be a part of the team at Dr. Duncan’s office. She enjoys the opportunity to truly help people and create beautiful, healthy smiles.Christi is a native of Portland and is happy to still call Portland home. When not caring for her patients, she loves spending time with family and lifelong friends. She also enjoys just about everything outdoors.

Becky – Registered Dental Assistant/Treatment Coordinator


Becky has been a member of our team since 2012 and she loves that everyone in our office is like a family that gets along well and works together.Becky is married to her wonderful husband and together they have two amazing boys. In her free time, Becky enjoys spending time with her family, attending sporting activities and school activities, and spending time with family and friends.

Linda – Registered Dental Assistant/Hygiene Coordinator


Linda has been with our practice since 2015 and she works hard each day to help our patients feel welcome by answering any questions they have. Her favorite part about working at our office is the fact that we all work together as a team. Prior to her dental career, she graduated high school in 1998 and graduated from the Del Mar College dental assisting program in 2000.Linda is married to her husband, John, and together they have two children, Anthony (11) and Adrian (5). In her spare time, Linda loves to take pictures and spend time with her family.

Tamara – Registered Dental Hygienist/Office Manager


Tamara currently lives in Portland, is a native of Rockport, and graduated from hygiene school in 1999 from Beeville. She enjoyed practicing hygiene for 6 years and then was asked to make a small change and move up to the front office to do the managing aspect of the office, and she absolutely loves it! She had the pleasure of starting with Dr. Jim when he moved to his new office in October 2011. She enjoys handling the insurance and collections for her patients as well as take care of the other financial aspects of the office. She is also grateful for the opportunity to help the staff grow and encourage them to reach their goals on a daily basis. She believes that Dr. Jim and her co-workers are a great group of people, and she feels very blessed to be a part of such a great team!In her spare time, she usually can be found spending time with her husband, Mike, and their five daughters. They enjoy being outside, taking photos, and having fun with their pets. They have two Yorkies named Tank and Tucker and a cat named Jasper. They are very active in their local church and have been attending Grace Point since 2010. They enjoy serving as volunteers on a regular basis. They believe that God has blessed them so much, and Tamara looks forward to growing with the office for many years to come!

Julie – Registered Dental Assistant


Julie, also known as Jules, has been working with Dr. Jim since 2005. She loves everything about working at Duncan Dental Studio with her main focus being on endodontics. Her goal is to make each and every patient’s visit as comfortable and fun as possible.Other interests for Jules would be spending time with her friends and family and helping out at Grace Point Church. She enjoys attending her kids’ sports activities as well as gardening.

Joy – Registered Dental Hygienist


Joy has enjoyed practicing hygiene since 1975 and has worked with Dr. Jim since 1992. She loves continuing to grow in her profession through yearly continuing education courses and self-study, and she recently became certified with an Associate Fellowship with the World Clinical Laser Institute. This training and the use of the Diode laser allows her to treat her periodontal patients with the latest technology and skills. She truly loves building ongoing relationships with her patients and she prides herself on providing gentle and thorough care.Joy has lived in Portland since 1981 and was born and raised in Beeville. Her favorite things to do outside of the office are spending time barbecuing with family and friends in their back yard and attending and volunteering at her church, Grace Point. She also enjoys visiting her son in Austin.

Beverly – Registered Dental Assistant-Hygiene Assistant


Beverly helps our hygiene department run smoothly at Duncan Dental Studio. She graduated from the Kaplan Dental Assistant Program in 2013 and is one of the newest members of our practice. Beverly makes sure patients are seated and comfortable for their visit and will also explain any treatments they may need. She really enjoys working with everyone here, counting them as a blessing and as family.When not enjoying the warm, welcoming atmosphere of our office, Beverly loves helping her 92-year-old grandma decorate her home for every occasion and holiday. Beverly has a wonderful eight-year-old son and a three-year-old daughter, who both push her to do the best for them.

Cheryl-Dental Assistant


Cheryl worked for Dr. Duncan from 2004 to 2012 and we are happy to have her return after a three year leave. She graduated from the Del Mar Dental Assisting Program in 2004 and enjoys helping with surgical procedures. Cheryl believes that our dental team is awesome and she enjoys working with such a great group of people.Cheryl is married and has three children and three grandchildren. She enjoys spending time with her family and loves anything outdoors. Cheryl is also an animal lover, cats being her favorite.

Office Fun

Duncan Dental Studio does a lot of fun things throughout the year, and we are happy to show them to you with this Office Fun page! If you would like to know more about upcoming events, please call our office today and talk to a member of our team. Our dentist, Dr. Duncan, looks forward to serving the community with our fantastic dental care in Portland, Texas, and spending time with you and your family members!