Staff

All our providers maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the medical field. Read on to learn more about our providers experience and training.

 Ian Martinez, M.D.

Ian Martinez, M.D.

Oviedo, FL Gastroenterologist

Gastroenterology Services, LLC

Ian Martínez, M.D. completed his internal medicine residency and gastroenterology fellowship at Louisiana State University Health Sciences Center in New Orleans, Louisiana. After his internship in 2008, he was awarded the LSU School of Medicine Aesculapian Society Intern of the Year Ward. He was chosen for his approachability, enthusiasm, and superior quality of instruction.

Dr. Martinez has been practicing Gastroenterology since 2010 and is certified by the American Board of Internal Medicine. He is a member of the American College of Gastroenterology and the Florida Gastroenterologic Society.

Dr. Martinez joined Gastroenterology Services in July 2017 and lives in Oviedo with his wife and two small children. He is also fluent in Spanish.


 Ian Martinez, M.D.

Lauren Knuelle, APRN

Lauren Knuelle completed her Associate of Science in Nursing in 2012 from Valencia College and her Bachelor of Science in Nursing in 2014 from University of South Florida. She continued on to receive her Master of Science in Nursing in 2021 from Chamberlain University where she graduated with honors distinction. She is a Family Nurse Practitioner and is certified by the American Academy of Nurse Practitioners. She worked at South Seminole Hospital on the progressive care unit for 4 years, caring for critically ill patients, and at Winnie Palmer Hospital for 6 years, caring for patients with a variety of high-risk obstetrical complications. Lauren joined Gastroenterology Services in January 2022 and currently resides in Oviedo with her husband and 3 children.


  • Ian Martinez M.D.

    Ian Martínez, M.D. completed his internal medicine residency and gastroenterology fellowship at Louisiana State University Health Sciences Center in New Orleans, Louisiana. After his internship in 2008, he was awarded the LSU School of Medicine Aesculapian Society Intern of the Year Ward. He was chosen for his approachability, enthusiasm, and superior quality of instruction.

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Hours of Operation

Our Regular Schedule

Gastroenterology Services LLC

Monday:

8:00 am-4:30 pm

Tuesday:

8:00 am-4:30 pm

Wednesday:

8:00 am-4:30 pm

Thursday:

8:00 am-4:30 pm

Friday:

8:00 am-4:30 pm

Saturday:

Closed

Sunday:

Closed