Dr. Shannon Marek, MD

Dr. Shannon Marek, MD

Gastroenterology  |  
Male  |  
Age 41
(54)
Save
Dr. Shannon Marek, MD is a gastroenterology specialist in San Marcos, TX and has been practicing for 9 years. He graduated from University Of Texas Medical School At Houston in 2004 and specializes in gastroenterology and hepatology.

1305 Wonder World Dr Ste 200

San Marcos, TX 78666

Contact Information

(512) 754-8676

Insurance Accepted

  • Aetna
  • American Republic
  • Amerigroup (Wellpoint)
  • Assurant Health
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Texas
  • Cigna
  • Commercial Insurance Company
  • CoreSource
  • 11 More

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Dr. Marek accepts

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(512) 754-8676

Dr. Marek accepts the following insurance:

Aetna
Aetna HMO
Choice Plus POS II
American Republic
Amerigroup (Wellpoint)
Assurant Health
Blue Cross Blue Shield
Blue Card PPO
Blue Cross Blue Shield of Texas
Blue Advantage HMO
Blue Choice
Cigna
Cigna HMO
Cigna PPO
Great West Healthcare-Cigna PPO
LocalPlus
Open Access Plus
Commercial Insurance Company
CoreSource
First Health (Coventry Health Care)
First Health (Coventry Health Care) PPO
Government Employees Health Association (GEHA)
GEHA
Group Health Cooperative (GHC)
Group Health Cooperative
HealthFirst
HealthSmart
Humana
Choice Care PPO
Preferred PPO
Mail Handlers Benefit Plan (MHBP)
Meritain Health
MultiPlan
MultiPlan PPO
PHCS Network PPO
Tricare
UnitedHealthCare
Choice Plus POS
Navigate HMO
Navigate POS
Options PPO
United Healthcare

Background Check

No malpractice claims found for Texas
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
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Experience Check

Check Dr. Marek's experience treating your condition or procedure

Dr. Marek's Top Procedures and Conditions

Treatment Frequency
Dysphagia
very high
very high

Treatment Frequency

Dr. Marek treats Dysphagia more than 100% of his peers

Dr. Marek treats this condition more than 100% of his peers

Gastroesophageal Reflux Disease (GERD)
very high
very high

Treatment Frequency

Dr. Marek treats Gastroesophageal Reflux Disease (GERD) more than 100% of his peers

Dr. Marek treats this condition more than 100% of his peers

Gastritis
very high
very high

Treatment Frequency

Dr. Marek treats Gastritis more than 100% of his peers

Dr. Marek treats this condition more than 100% of his peers

Dr. Marek's conditions and procedures:

  • Abdominal Disorders
  • Abdominal Pain
  • Anal or Rectal Pain
  • Anemia
  • Autoimmune Diseases
  • Barrett's Esophagus
  • Benign Neoplasm of the Digestive System
  • Benign Tumor
  • Biliary Atresia
  • Blood Disorders
  • Cancer
  • Celiac Disease
  • Cholecystitis and Gallstones
  • Cholelithiasis
  • Cirrhosis
  • Colon Cancer Screening
  • Colonoscopy
  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
  • Colorectal Cancer
  • Colorectal Cancer Screening
  • Constipation
  • Crohn's Disease
  • Dehydration
  • Diaphragmatic and-or Hiatal Hernia
  • Diarrhea
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Duodenal Ulcer
  • Duodenitis
  • Dysentery
  • Dysphagia
  • Endoscopic Mucosal Resection
  • Endoscopy
  • Endoscopy (Esophagus, Stomach, Small Intestine)
  • Enteritis
  • ERCP (Endoscopic Retrograde Cholangiopancreatography)
  • ERCP With Spincterotomy
  • Esophageal Achalasia and Cardiospasm
  • Esophageal Cancer
  • Esophageal Dilation
  • Esophageal Diseases
  • Esophageal Diverticulum
  • Esophageal Stenting
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Gas-Bloat Syndrome
  • Gastric Ulcer
  • Gastritis
  • Gastroenterology Procedures
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Bleeding
  • Gastrointestinal Diseases
  • Gastrointestinal Malabsorption
  • Gastroparesis
  • Heartburn
  • Hemorrhoid Removal
  • Hemorrhoid Treatment
  • Hemorrhoidectomy or Excision of Anal Tags
  • Hemorrhoids
  • Hepatitis C
  • Hernia
  • Indigestion
  • Inflammatory Bowel Disease
  • Intestinal Abscess
  • Intestinal Ischemia
  • Intestinal Obstruction
  • Irritable Bowel Syndrome
  • Limb Swelling Caused by Fluid Overload
  • Liver Biopsy
  • Liver Damage from Alcohol
  • Liver Fluke
  • Malnutrition
  • Nausea
  • Neoplasm of Gastrointestinal Tract
  • Non-Alcoholic Fatty Liver Disease
  • Noninfectious Gastroenteritis and Colitis
  • Non-Neonatal Jaundice
  • Pancreatitis
  • Peptic Ulcer
  • Percutaneous Edoscopic Gastrostomy (PEG)
  • Pyloric Stenosis
  • Reflux Esophagitis
  • Stomach and Small Intestine Cancer
  • Stomach Cancer
  • Stomach Diseases
  • Stomal Ulcer
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • Viral Hepatitis
  • Vomiting Disorders

About Me

Care Philosophy

My goal is to care for and treat every patient to the best of my ability. I respect patient's time and do my best to value your time while giving every patient as much undivided attention as they need. I not only hope to assist in the healing process...

Specialties

  • Gastroenterology
  • Hepatology

Board Certifications

  • Gastroenterology
  • Internal Medicine

Education

2010
Medical College Of Georgia
Fellowship Hospital
2007
University Of Alabama At Birmingham
Residency Hospital
2005
University Of Alabama At Birmingham
Internship Hospital
2004
University Of Texas Medical School At Houston
Medical School
2000
Baylor University
Undergraduate School
2010
2007
2005
2004
2000

Languages

  • Spanish
  • English

Awards

Media & Publications

Dr. Marek's Reviews

Likelihood to recommend Dr. Marek

4.6

Based on 54 reviews

5 Stars
88.88888888888889%
(48)
4 Stars
0%
(0)
3 Stars
0%
(0)
2 Stars
0%
(0)
1 Star
11.11111111111111%
(6)

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Dr. Marek?
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Average Reported Wait Time
  • 10 – 15 minutes
Dr. Marek's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
What People Say About Dr. Shannon Marek, MD
RecentHighestLowestMost Helpful
Reply
I did not have a good experience with Dr. Marek. He was a little condescending about taking natural laxatives. I had major stomach pain so he scheduled a colonoscopy which I waited over a month to have done.. I got severely sick during the prep and was throwing up “brown” liquid! Went to the ER room at 2am.. was sent home by the ER.. So instead of Dr. Marek’s office calling me in to the office after that ASAP they called and told me to drink more Miralax and schedule another colonoscopy. Seriously?? I wound up having a tumor in my colon the size of an orange. It is stage 3 verging on Stage 4. Thank the Lord I found a GI Dr. in Austin that was very concerned and found the tumor.
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I cannot speak highly enough of Dr. Marek. He sat down and honestly listened to me about my ongoing problem with recurring bouts of diverticulitis and came up with a plan forward. I look very forward to a life where I am not having to worry about when is it going to happen to me again and for that I am very grateful to Dr. Marek and his staff.
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Found staff and Dr. Marek to be very competent and caring. Had no qualms about going there for my colonoscopy.
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I found him to be very caring, understanding.
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everything I had hoped for and more. His nursing staff at the center was tops.
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Every one was Real friendly and polite, make us feel at home
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The office was clean and staff very professional. As I waited for my consultation with Dr. Marek the time was slipping by and 40mins later Dr. Marek came in, very politely introduced himself and the next words out of his mouth were “I’m so sorry for keeping you waiting”.....I’m 64 and NEVER had a Doctor say those words to me before. I said how much I appreciated his consideration for my time and that I understood a physicians schedule can be very unpredictable. He was very thorough as well. !!
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Absolutely amazing experience. Over the years, I have seen quite a few gastroenterologists for my issues, but I have never had anyone sit and listen and discuss options with me like Dr. Marek has. After only 2 visits, I am now feeling better than I have in 10 years! I recommend him to everyone I know that needs a fantastic Gastroenterologist
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After years of agonizing illness and unpleasant and invasive colonoscopies, another doctor recommended I try a different GI specialist. On the first visit with the new GI, she ran blood work and stool samples and found out what the problem was. When I contacted Dr. Marek's office I was told there was no reason for them to do a stool sample. Hmmm except for the fact that it could have saved me years of dealing with a horrendous and contagious disease!!!!
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Friendly staff, short wait to see dr., very personable and communicates in a way everyone can understand
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74% Patient experience rating, 5% higher than the national average