Meet the doctors & staff at our

Portland Location

Located at:

101 Cox Dr

Portland, TX 78374



Dr. W. Cobey Clemishire

Dr. Cobey was born and raised in rural Oklahoma and received his Bachelors from the University of Oklahoma before moving to California for dental school. He earned his Doctorate from the Western University of Health Sciences College of Dental Medicine in Pomona, California. Dr. Cobey received extensive training at WesternU in the underserved and pediatric populations.  He has had an interest  in dentistry from a young age and is happy to be practicing in Portland. Dr. Cobey is excited to be working for such a wonderful group at this stage in his career. He enjoys surfing, music, sports, fishing, and other outdoor activities.


Jennifer Thornton-Patient Coordinator

I became a dental assistant at the young age of 19 and now have about 15 years experience under my belt. I began my career in San Antonio, where I was born and raised. I moved to Portland about nine years ago and started working with the Allen Dental Family. One of my favorite sayings is “Do what you love, and you’ll never work a day in your life.” I feel blessed to be able to say that I love what I do! Outside of work, I enjoy attending my son and daughter’s sporting events and reading long books.



Robin Terry – Patient Coordinator

Originally I am from Maryland but have lived in Virginia, where I began my dental career as a dental assistant in 1994. I have extensive experience in all areas of the dental office and enjoy working with people. In 2004, I moved to Aransas Pass with my husband and two sons. I started working with Dr. Cuellar in 2009 and have found a new home working with this team. In our spare time our family enjoys spending time at the beach and having fun in the South Texas sun.



Corrin Ebby-Registered Dental Hygienist

I am a Dental Hygienist originally from Dripping Springs, Texas.  I joined the dental field at a young age, but have been practicing dental hygiene for five years now.  I graduated from Coastal Bend College in Beeville, Texas in 2010 and I love my job.  Our practice at Allen Portland Dental is the best place to work!  When I’m at home I enjoy hanging out by the pool with my husband and our five sons.  I also enjoy yard work, exercise and going to the beach.

         2015-12-11 13.58.41

Hollie Swierc-Registered Dental Hygienist

I am a 1999 Gregory Portland HS graduate. I graduated from Del Mar College in 2001 with an associate’s degree and a certificate as a certified dental assistant. As I was working as a dental assistant, I was actively pursuing becoming a registered dental hygienist. In 2005 I graduated from Del Mar College as a registered dental hygienist.

I’m married to my hero, a Portland fire fighter! We have two awesome children together. In my free time I enjoy spending time with my husband and kids.