• To promote vascular wellness by providing contemporary, high-quality vascular care to the communities we serve.
  • To treat our patients with dignity, compassion, and exceptional service in a way that honors our creator.


  • To become the premier vascular health center in East Texas, providing extensive on-site preventative, diagnostic, and therapeutic services.
  • To develop outreach services bringing exceptional vascular care to surrounding communities.


  • Excellence, Humility, Integrity, Trustworthiness, and Good Stewardship



Mark R. Robbins, M.D., FACS
Board Certified General Surgeon | Board Certified Vascular & Endovascular Surgeon | Vein Specialist

Dr. Mark Robbins earned his medical degree in 1995 from the University of Iowa and trained for 5 years at the University of Kansas – Wichita as a surgical resident. In 2000, he earned his board certification in general surgery and practiced for three years as a general surgeon achieving the rank of major at Sheppard Air Force Base Hospital. In 2003, Dr. Robbins was accepted into the vascular surgery fellowship program at the renowned Jobst Vascular Center in Toledo, Ohio.

Dr. Robbins treats all aspects of arterial and venous disease, with an emphasis on minimally invasive endovascular procedures that allow for quick recovery and return to normal activities. Dr. Robbins’ passion for the treatment of the human vascular system spurred him to decide to treat varicose and spider veins in addition to the complex, and often life threatening conditions of PAD, aneurysms, carotid stenosis, and other traditional vascular diseases.



Tonya Langley, CSFA
Surgical Assitant

Tonya is a Certified Surgical Technologist from Roscoe, Texas. In 2004 she graduated from South Plains College in Lubbock. When she moved to Tyler in 2006, she was employed at East Texas Medical Center where she scrubbed and assisted in all different fields of surgery. Although she has only been at Vascular Tyler since December of 2014, Tonya has over 9 years of experience with Dr. Robbins in the operating room. In 2016, she graduated from Meridian Institute of Surgical Assisting in Nashville, Tennessee. Tonya enjoys spending time with her husband, Blake, and their three-year-old son, Grayson.



Tyrone J. Miller, D.O., FACOS, FACS
Board Certified General Surgeon | Board Certified Vascular & Endovascular Surgeon | Vein Specialist

Our newest associate, Tyrone J. Miller, D.O. Dr. Miller is a Fellow of the American College of Osteopathic Surgeons and joins us after two years of successful practice here in Tyler, Texas. He brings with him a wealth of knowledge and skills in vascular, endovascular, general and robotic surgery.

Dr. Miller received his Bachelor’s of Science degree from the University of Arizona in 2001. During his undergraduate study he worked as a paramedic at local Tucson hospitals, followed by work as a paramedic and firefighter for Rural Metro Fire Department in Pima County, Arizona for one year.

In 2002, Dr. Miller was accepted into the Arizona College of Osteopathic Medicine at Midwestern University in Glendale, Arizona. Between his first and second year of medical school, he earned a research fellowship under Wade Grow, PhD. This led to his first authored publication Mercury Decreases the Frequency of Induced but not Spontaneous Clustering of Acetylcholine Receptors, Cell and Tissue Research, May, 2004.

After graduating with Honors in 2006, Dr. Miller began a five year General Surgery residency at Michigan State University/McLaren Macomb Medical Center in Mt. Clemens, Michigan, where he was named Chief Resident in his final year. He then entered into a two year Vascular Surgery Fellowship through Michigan State University, with one year at McLaren Macomb Medical Center and one year at the world famous Arizona Heart Institute. Here, Dr. Miller trained under Dr.’s Julio Rodriguez-Lopez, Venkatesh Ramaiah, Grayson Wheatley and David Caparelli. During this time he was exposed to all facets of vascular and endovascular surgery.

Dr. Miller moved to East Texas in July of 2013 with his wife, Heather Compton, D.D.S., a local dentist, and their son, John. Although not from Texas originally, Dr. Miller grew up in Houston and owns land in South Texas. After making yearly trips back to the family ranch, he and his wife decided to make Texas their home for good


Angela Harden

Angela Harden, PA-C, WCC

Angela joined our Vascular Tyler team in April 2017 as our Physician Assistant with additional certification in wound care. Angie started her career as a nurse after graduating from University of Texas at Tyler with her Bachelor of Nursing in May of 1999. Her main focus as a nurse was Women’s Health until deciding to return to college in 2005. She attended the University of North Dakota and obtained a Masters in Physician Assistant Studies in 2007. As a PA, she practiced primary care in a Rural Health Clinic for 4 years before returning to the Tyler area to practice in a general surgery and wound clinic in 2011. In 2013, she became Wound Care Certified by the National Alliance of Wound Care and Ostomy. Angie treats her patients like family and friends, with kindness and honesty. She strongly believes in taking time to educate in order to allow her patients to best participate in their own care.

Angie and her husband, Brad, have been married since 1996 with two beautiful daughters. She supports her husband and their busy teenage daughters in all their endeavors. Her family’s favorite hobby is showing livestock which allows very little spare time. When she does have precious down time, she loves to simply relax with family and friends.

Vascular Lab


Callie Leonard, ARDMS, RVT
Technical Director, Vascular Imaging

Callie is the Technical Director of the vascular lab at VascularTyler. She joined our team in November of 2012 after graduating from Tyler Junior College with an Associate in Applied science degree in Diagnostic Medical Sonography in 2011. In 2012 she received the Advanced Certificate of Vascular Sonography. Since graduating, she has obtained her credentials through the ARDMS (American Registry for Diagnostic Medial Sonography) in Abdomen, OB/GYN, and RVT (registered vascular technologist). Callie has a strong work ethic and has been an asset to our imaging facility. We can always count on her to give the best possible care to our patients here at Vascular Tyler. Callie grew up in Henderson, Texas, and graduated from Carlisle High School. She enjoys spending her free time with family and friends, especially her niece.



Haley Chanyworth, ARDMS, RVT
Ultrasound Technologist

Haley joined our team in September of 2014. She graduated from Tyler Junior College in 2008 with an Associate in Applied Science degree in Diagnostic Medical Sonography. She furthered her education by obtaining the Advanced Certificate of Vascular Sonography in 2009. She is credentialed through the ARDMS (American Registry for Diagnostic Medial Sonography) in Abdomen, OB/GYN, and RVT (registered vascular technologist). Most of her professional career has been spent at hospitals and clinics in and around East Texas. Haley was raised near Tyler and currently resides in Flint with her husband and two children.



Gena Ragland BSN, RN

Gena joined our Vascular Tyler team in January 2016, Gena is a registered nurse and started her career in 1995. She began her career as a LVN and achieved an Associate’s Degree in Applied Science along with her RN in 1998. In 2009, she graduated from the University of Texas at Tyler with a Bachelor’s of Science in Nursing. She is currently a member of the American Nurses Association, Texas Nurses Association and the American College of Cardiology. She brings over 20 years of nursing experience to our team. She is very passionate about patient care and is very excited to now be serving the patients of Vascular Tyler. Gena and her husband, John, have three adult children whom they love hanging out with. In addition to spending time with their children, they love the East Texas outdoors!



Noah Sepulveda

Noah joined our team in 2014. He graduated from Tyler Junior College with a license in Vocational Nursing. He has been serving the Tyler community for four years now, and enjoys helping people and caring for patients. Outside of work he enjoys spending time with his wife and two dogs, as well as playing golf, fitness training, and traveling.


Celia Flores
Medical Assistant

Celia Flores joined our Vascular Tyler team March 2016, She was born and raised in Tyler Tx. Celia became a medical assistant in 2010 from Tyler Junior college and graduated in 2013 with an associates in applied science. She is fluent in both English and Spanish and has worked in the medical field for seven years.  She is very passionate about patient care and prevention. Celia plans on pursing a nursing degree in the future. She married her high school sweetheart Freddy and has five beautiful kids Freddy, Roselyn, Lesly, Maria and Aleyna. Outside of work she enjoys spending time with her family, working out and working on her fitness page. She also joined beach body to become an online health coach and to inspire people to live a healthy lifestyle.



Amy Stewart
Medical Assistant

Amy Stewart joined our team in 2015. Born and raised in Tyler, Amy graduated from Robert E. Lee High School in 2003. Amy furthered her education at Texas Tech by receiving her bachelor’s in English. Amy has nine years of medical experience where most of it has been spent in the lab at hospitals and clinics. She obtained her phlebotomy license in 2008.


Ed Schmidt

Ed Schmidt, BS, BSN, RN, LP

Ed joined the Vascular Tyler team in February 2016 as a registered nurse (RN). He brings with him experience as an ICU Nurse, TCFP/IFSAC Firefighter, Licensed Paramedic, Flight Medic, EMS Instructor, and Licensed Texas Police Officer. Ed holds certifications as an Advanced Trauma Care for Nurses (ATCN), Basic Life Support (BLS) Instructor, Pediatric Advanced Life Support (PALS) Instructor, and Trauma Nursing Core Course (TNCC).

His academic achievements include an Associate’s Degree in Applied Science in Paramedicine 1998 and a Bachelor of Science in Public Health from The University of Texas at Tyler in 2010. He obtained an Associate Degree in Nursing from Tyler Junior College in 2015, and graduated from Houston Baptist University with a Bachelor of Science in Nursing Summer 2017. He is currently a member of the American Nurses Association (ANA), Texas Nurses Association (TNA), and Texas Municipal Police Association (TMPA). When Ed is not tending to our patients, he enjoys spending time with his wife Denise, their four children and the family dog. In addition to Ed’s family time, he enjoys fitness training, golf, hunting and traveling.

Front Office


Mary Loftis
Office Coordinator

Mary joined our team in 2011 and has held multiple positions with the practice. Currently she coordinates all staff and oversees the daily operations of the front office. Mary is a solid member of the VascularTyler team who builds everyone up with her “can-do” attitude. She is fluent in both English and Spanish and has worked in the medical field for seven years. Outside of work she enjoys spending time with her husband, daughter, and two sports fanatic sons.



Marycarmen Garcia
New Patient Referral Coordinator

Marycarmen joined our office in June of 2014 as our front desk receptionist. She was raised in Athens, Texas, and now lives in Tyler. She is the first person you may see as you come into our office, as she greets patients, checks patients in, and schedules appointments. Marycarmen recently got engaged and will be getting married next year. While not at work, she enjoys online shopping and spending time with her fiancé and their daughter, Emma.



Theresa Gaona
Surgery Scheduler/MA

Theresa Gaona joined our team in 2010. Born and raised in Tyler, Theresa graduated from Robert E. Lee High School in 2007. She obtained her certification for Medical Assistant at Tyler Junior College in 2009. She is fluent in both English and Spanish, which is a big asset to our office. Outside of work, Theresa enjoys social media, blogging, working out, and cooking. Her favorite thing to do is to stay busy as a sports mom for her two boys, Christian and Nicholas. As a family, they enjoy volunteering and participating in community events.


Berenice Garcia

Berenice joined our team in June 2016 as one of our front desk receptionists. As patients arrive at our office she will be one of the first people to greet them with a smile, check them in and schedule any appointments they may need. She is fluent in both English and Spanish. Berenice was raised in Tyler and graduated from John Tyler High school. She enjoys shopping and spending time with her husband, family and friends. This September she and her husband will be expecting their first baby boy.


Jade’ Lindsay

Jade’ joined our Vascular Tyler team in Feb 2017 as one of our Front Desk Receptionist. She has over 4 years of experience in the medical field. Her experience includes Front Desk Receptionist, Insurance Verification and over 10 years of experience in Customer Service. She also enjoys spending time with family and her husband. In her free time she loves reading, shopping, listening to music and watching movies/TV shows.



Leslie Robbins
Medical Biller



Froncel Burns
Account Manager

Froncel joined our team in February of 2014. She became a member of the AAPC and has been a certified professional coder since September of 2010. In addition to medical coding, she has over ten years of experience in medical billing, insurance reimbursement, and healthcare compliance. Froncel has worked with a diverse team of healthcare professionals, which has allowed her to develop her skills in credentialing as well as create strategic plans for AR management. Froncel’s strong work ethic and passion for medical billing make her eager to ensure that our patients are taken care of not only on the clinical side but on the business side as well. In her spare time, she enjoys spending time with family and friends, staying involved in her local church, and participating in outreach ministry.


Connie Holmes
Claims Management

Connie Holmes joined our Vascular Tyler billing team in June 2016. She brings over 14 years of experience in billing and claims management. She enjoys the challenge of working claims and getting them paid correctly for our patients and facility. In addition to billing she takes payments and enjoys helping our patients with their billing and insurance questions. In her spare time she loves spending time with Frank, her husband of 22 years, and their grandchildren.


Tina Scott
Financial Counselor

Tina Scott joined our Vascular Tyler team in January 2017, as our financial counselor. She brings with her over 12 years of medical billing experience. Tina enjoys assisting our patients with their financial concerns in a professional and dignified manner. Outside of work this busy mom of six also attends TJC as a full-time student. In her spare time, she enjoys reading, going to the movies and spending time with her family.


Valenceia Cobb
Insurance Verification Specialist

Valenceia Cobb joined our team in January 2017 as our Insurance Verification Specialist. She has 9 years of experience in the medical field, where she has spent the last 5 years in insurance verification and claims processing. Valenceia loves spending time with her two children Sha’Kayla and Chase.



Susan Braymer
Payment Poster

Susan was excited to join our billing team in January 2016 as a payment poster along with assisting with A/R management. She began her insurance career in 1992 where she trained to code and process medical claims. For the last 14 years she has worked in medical billing, insurance reimbursement and handling patient accounts. In her leisure time, Susan enjoys cooking and collecting cookbooks, playing cards/games with her friends where she is accused of being a “little” competitive. Her favorite pastime is antique shopping with Bruce, her husband of 30 years. Susan is actively involved with her church and Sunday School class and enjoys meeting every Monday night with a ladies bible study group. She looks forward to helping our patients with any questions they may have regarding their statements.