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Welcome to Our Practice

Comprehensive Digestive Institute of Nevada’s patients will receive the highest quality digestive care. Our gastroenterology experts have outstanding clinical expertise, board certifications, academic backgrounds, international recognition, as well as a compassionate approach.  They are sought out as trusted and reliable professionals throughout the regional medical community.

CDIN is dedicated to providing exceptional, personalized, and empathetic patient care in every way—from consultations, testing, care plan, procedures, to continual care as needed.

We continue to develop and enhance methods to improve each patient’s experience. Along with our highly experienced physicians, our staff also works diligently to maintain the highest standards for trusted medical care and patient satisfaction. Some of our services include colonoscopy, endoscopy, treating abdominal pain, and treating diarrhea and constipation

Your digestive health is our Top Priority!

Meet the Doctors

  • Tarek Ammar, MD

    Tarek Ammar, M.D. was the former Chief of Gastroenterology at University Medical Center of Southern Nevada and the Director of Endoscopy at the University of Nevada Las Vegas.

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  • Gary Chen, MD

    Gary Chen, M.D. is an expert in the care of gastroenterology and is well-versed on the latest treatments and advances in endoscopic technology.

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  • Vijay Jayaraman, MD

    Dr. Vijay Jayaraman is one of the few formally trained therapeutic endoscopists practicing in Southern Nevada.

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  • Christian Stone, MD, MPH

    Christian Diaz Stone is an academic gastroenterologist practicing in Las Vegas, NV, since 2009.

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  • Andrew Kim, MD

    Dr. Andrew I. Kim is a gastroenterologist who is certified by the American Board of Internal Medicine.

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  • John Ryan, MD

    Dr. Ryan is a Board-Certified Gastroenterologist specializing in the treatment of intestinal and liver diseases.

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  • Syed Abdul Basit, MD

    Syed Abdul Basit, MD took a longer route towards the field of gastroenterology. He actually started his medical career as a pediatrician in Pakistan.

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  • David Shih, MD, PhD

    David Quan Shih, MD, PhD, FACP joined CDIN from the prestigious Cedars-Sinai Medical Center in Los Angeles.

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  • Matthew Glover, M.D.

    Matthew Glover joined the Comprehensive Digestive Institute of Nevada in 2021 after completion of a gastroenterology fellowship at Washington University in St. Louis Missouri.

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  • Gayatri Vengayil, M.D.

    Dr. Gayatri Vengayil joined CDIN in 2022. She completed her internship at the Medical College of Wisconsin Affiliated Hospitals in Milwaukee, Wisconsin and Internal Medical Residency from HCA Sunrise GME consortium.

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  • Muthena Maklad, MD

    Dr. Muthena Maklad is dedicated to providing excellent digestive care to Nevadas. Dr. Muthena completed his internal medicine training at the University of Nevada Reno School of Medicine and served as the Chief Resident.

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  • Mirela Popovic, APRN, FNP-BC

    Mirela Popovic is a certified advanced practice registered nurse with extensive experience and expertise in gastroenterology. Mirela was born in Sarajevo, Bosnia, and grew up in Las Vegas.

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  • Jackie Armijo, APRN, FNP-C

    Jackie Armijo obtained her Bachelor of Science in Nursing from the University of Arizona in 1980, She was employed in the Carondelet health system from 1980 until 2003.

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  • Yingmei Lee, APRN, FNP-C

    Ms. Lee graduated from Touro University Nevada, specializing in the Family Nurse Practitioner program. Ms. Lee has had extensive nursing experience at Dignity Health St. Rose Hospital med-surg unit.

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TESTIMONIALS

  • "I'm finally able to enjoy exotic foods with the people I love."
    STEPHANIE DE LEON

FEATURED ARTICLES

Read about helpful topics

  • Understanding Colon Cancer Screening

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

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  • Understanding Upper Endoscopy

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

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  • Understanding Colon Polyps and Their Treatment

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

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  • Understanding Percutaneous Endoscopic Gastrostomy

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

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  • Understanding Diverticulosis

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

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  • Understanding Minor Rectal Bleeding

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

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OUR LOCATIONS

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HOURS OF OPERATIONS

Our Regular Schedule

Las Vegas, NV Gastroenterology Doctor

Monday:

8:00 am-5:00 pm

Tuesday:

8:00 am-5:00 pm

Wednesday:

8:00 am-5:00 pm

Thursday:

8:00 am-5:00 pm

Friday:

8:00 am-5:00 pm

Saturday:

Closed

Sunday:

Closed

Henderson, NV Gastroenterology Doctor

Monday:

8:00 am-5:00 pm

Tuesday:

8:00 am-5:00 pm

Wednesday:

8:00 am-5:00 pm

Thursday:

8:00 am-5:00 pm

Friday:

8:00 am-5:00 pm

Saturday:

Closed

Sunday:

Closed