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OVERVIEW

"Growing up working in my familys automotive business outside of Dallas and on the farms of my extended family, I learned early on the importance of work ethic and the joys of working with my hands. Whether it was dissembling my Tonka trucks or studying astronomy, the challenge of discovering why things work has also been another passion. For as long as I can remember, being a physician has been the goal and culmination of these two passions. Particularly the field of GI. Not only do I get the opportunity to study some of the most intriguing and poorly understood organs in the human body, I also get to work with my hands doing complex and intricate procedures. As a physician with humble beginnings and a loving family to keep me grounded, I strive to translate the complex medical world of the gut and liver into an understandable experience for my patients. I have the blessing of having a job that I actually wake up every day and look forward to going to! I enjoy the every aspect of my field, but have a particular affinity for a few areas. I enjoy the intellectual challenges presented by Inflammatory Bowel Disease and its evolving treatments. Crohns and Ulcerative Colitis remain largely under researched and are areas of great opportunity for us to improve the field of medicine and most importantly, the quality of life for our patients. On the procedural side, I enjoy the evolving and cutting edge technology being used today. Being trained in numerous aspects of advanced endoscopy including stent placement, endoscopic mucosal resection, wireless capsule endoscopy and even the latest method of nonsurgical hemorrhoid treatment, I am always interested in where technology and improved techniques can take us."
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PATIENT'S PERSPECTIVE

Explains conditions and treatments
Takes time to answer my questions
Provides follow-up as needed
Office cleanliness

Based on patient feedback. Read the reviews

RATINGS AND REVIEWS

Dr. Marek's Rating
21 Ratings with 2 Reviews
Patient Perspective
4.0 Explains conditions and treatments
4.5 Takes time to answer my questions
4.5 Provides follow-up as needed
Office Rating
Showing ratings for:
1305 Wonder World Dr Ste 200, San Marcos, TX, 78666
n/a Average office wait time
5.0 Office cleanliness
5.0 Courteous staff
5.0 Scheduling flexibility
Gastroenterology
1305 Wonder World Dr Ste 200
San Marcos, TX, 78666
2 REVIEWS
Showing 1-2 of 2 reviews
"My husband and I have been going to Dr. Marek ever since we moved to the Hill Country from Houston (2010). Our primary care Dr. recommended him for our colonoscopies. Great recommendation. Dr. Marek is very personable, informative and excellent in his field. He is very good at providing his findings (paperwork) before we leave. With post procedure information. We highly recommend Dr. Marek for this procedure, as we know we are in good hands !"
  • May 13, 2023
"On 1-15-15, I went to a prescheduled FREE consultation for a second opinion with Dr. Shannon Marek. After further interaction upon my visit to his office I decided not to use his services and went with my original Dr. Randall Rodgers. Two months went by and I received a bill from Dr Marek through Gastro Of San Marcos NB. in the amount of $211.58. After numerous attempts of being bullied by his staff to pay this FALSE DEBT and Credit Collections, I’m still not any closer to having this removed. Today’s date is 4-21-20. Almost 5-1/2 years of relentless calls to remove this I offered to settle it just to remove it from my credit bureau to no avail. Let it be known far and wide that this Dr is a thief. Using his practice as a front to distort monies from innocent people! It my duty to let everyone know about his malpractice! I will post this in every medical field in the country as to remove Dr Marek from practicing medicine in any State!"
  • April 21, 2020

LOCATIONS

San Marcos
1305 Wonder World Dr Ste 200
San Marcos, TX, 78666
  • Accepting New Patients
  • Accepting New Patients
1305 Wonder World Dr Ste 105
San Marcos, TX, 78666
  • Accepting New Patients
  • Medicaid Accepted
Mon5:30 am - 5:00 pm
Tue5:30 am - 5:00 pm
Wed5:30 am - 5:00 pm
Thu5:30 am - 5:00 pm
Fri5:30 am - 5:00 pm
SatClosed
SunClosed
  • Accepting New Patients
  • Medicaid Accepted
1738 Common St
New Braunfels, TX, 78130
  • Accepting New Patients
  • Medicare Accepted
  • Medicaid Accepted
Mon6:30 am - 5:00 pm
Tue6:30 am - 5:00 pm
Wed6:30 am - 5:00 pm
Thu6:30 am - 5:00 pm
Fri6:30 am - 5:00 pm
SatClosed
SunClosed
  • Accepting New Patients
  • Medicare Accepted
  • Medicaid Accepted
New Braunfels
2028 Sundance Pkwy
New Braunfels, TX, 78130
  • Accepting New Patients
  • Accepting New Patients
Christus Santa Rosa Hospital San Marcos
1301 Wonder World Dr
San Marcos, TX, 78666

PROCEDURES PERFORMED

SPECIALTIES

EDUCATION AND TRAINING

Medical School
University of Texas at Houston

INSURANCE PLANS ACCEPTED  (44)

Please verify insurance information directly with your doctor's office as it may change frequently.
  • UHC Navigate POS
  • Humana Preferred PPO
  • Aetna HMO
  • BCBS TX BlueChoice
  • Aetna Choice POS II
  • BCBS TX Blue Advantage HMO
  • Multiplan PPO
  • Humana ChoiceCare Network PPO
  • CIGNA Open Access Plus
  • First Health PPO
  • Humana National POS
  • FirstCare PPO
  • Aetna Managed Choice POS Open Access
  • CIGNA LocalPlus
  • Humana Choice POS
  • FirstCare Select
  • CIGNA PPO
  • Oscar - San Antonio MRF
  • CIGNA HMO
  • Aetna Signature Administrators PPO
  • PHCS PPO
  • BCBS Blue Card PPO
  • UHC Choice Plus POS
  • UHC Options PPO
  • Humana HMO Premier
  • UHC Navigate HMO
  • Humana Austin HMOx
  • Christus Exchange TX
  • Aexcel PPO
  • Blue Essentials HMO
  • MEDICA CHOICE WITH UNITEDHEALTHC
  • Oscar Insurance TX
  • UHC NAVIGATE PLUS POS
  • Humana San Antonio HMOx
  • UHC Nexus Open Access
  • Aetna Elect Choice EPO Open Access
  • Aetna Innovation Health Aetna Premier Care Network Plus
  • Aetna Open Choice PPO
  • AWH BaptistHealth HealthTexas Managed Choice
  • BCBS TX Blue Essentials HMO
  • Humana / ChoiceCare Network PPO
  • Humana/ChoiceCare+ Network PPO
  • Medica Choice With UHC
  • Oscar EPO TX
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HOSPITAL AFFILIATIONS

SIMILAR PROVIDERS

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