Meet Our Gastroenterology Staff

Miguel A. Arenas, MD, Gastroenterologist

Miguel A. Arenas, MD

Gastroenterologist in Tucson, AZ

Mesquite Gastroenterology and Surgery Center
Dr. Miguel A. Arenas is board certified in Gastroenterology and Internal Medicine. Please see below to learn more about his specialty, medical education, and professional affiliations.
Dr. Arenas is the founding member of MGSC. He is native from Peru. Dr Arenas received his medical degree from the San Agustin National University in Arequipa, Peru. Graduating with honors, he went on to pursue his medical training in the United States. After medical school he completed his internship and residency in Internal Medicine at the THMEP-University of Arizona program. Wanting to further specialize, he then completed a fellowship in Gastroenterology at the University of Arizona in 2007. He is board certified in Internal Medicine and Gastroenterology. He is married to a Tucson native Katie Belk-Arenas and they have two children.  In his spare time, Dr Arenas enjoys playing the guitar and mandolin, fishing and other outdoor sports. He is active in community events and his son’s schools.

Dr. Arenas performs Endoscopic Ultrasounds (EUS) which allows him obtain images and information about the digestive tract and the surrounding tissue and organs, including the lungs.

Currently accepting new patients

Principal specialty: Gastroenterology
Secondary specialty: Internal Medicine
Residency: 2001-2004
Fellowship: 2007-2007
Academic appointments: clinical instructor THMEP-UA program
Board certification: Internal medicine 2004, Gastroenterology 2008
In practice since 2007

Affiliations:
American College of Gastroenterology
American Society of Gastrointestinal Endoscopy
American College of Physicians
American Medical Association
Honors Patient’s Choice Award 2008
Languages available: Spanish

 


Cindy Chang

Cindy Chang

Nurse Practitioner in Tucson, AZ

Mesquite Gastroenterology and Surgery Center

Cindy is a native of Tucson, Az. She attended the University of Arizona earning a degree in Molecular and Cellular Biology (BS). She has degrees in Nursing from Pima College (LPN & ADN), Northern Arizona University (BSN), and The University of Phoenix (MSN). She graduated Summa Cum Laude “with highest distinction" in her programs.

As a member of Southern Arizona Advanced Practice Nurse- Nurse Practitioner Society, she is passionate about practicing evidence-based medicine with a belief that health is a state of physical, mental, and social well-being. Prior to Mesquite Gastroenterology, she worked in the hospital setting and physical rehabilitation facilities.

In her free time, she enjoys cooking, gardening, furniture restoration, and spending time outdoors with her Husband and young Sons.


Cindy Chang

Kristina Jimenez

Nurse Practitioner in Tucson, AZ

Mesquite Gastroenterology and Surgery Center

As a nurse practitioner with over 8 years of experience and 18 years in nursing I am committed to providing comprehensive, passionate, evidence-based care. I blend a holistic approach with evidence-based treatments to address the root causes of GI issues and promote long-term wellness. 

My goal is to empower patients through education and personalized care plans. After spending years in family practice, I learned that I enjoyed working with patients with gastrointestinal disease. 

Outside of the office, I find balance through hiking and spending quality time with my family, embracing the importance of wellness both personally and professionally.


Cindy Chang

Le Roi Arturo Baez, MD

Gastroenterologist in Tucson, AZ

Mesquite Gastroenterology and Surgery Center

Dr. Le Roi Arturo Baez is a highly experienced gastroenterologist with over 22 years of practice in the field. He was born in Acapulco, Mexico, and earned his medical degree from the Autonomous University of Guadalajara, Mexico, in 1988. Dr. Baez completed his internship at the University of Costa Rica-affiliated Hospitals in San José, Costa Rica. He then pursued residency training in Internal Medicine and Gastroenterology at The National Medical Center in Mexico City.

Following his move to the United States, Dr. Baez completed a specialty in Internal Medicine at the University of North Carolina, Wilmington. He further advanced his expertise with a Fellowship in Gastroenterology at the University of Texas Medical Branch, where he sub-specialized in advanced therapeutic endoscopy.

Dr. Baez is board-certified in Gastroenterology and is a proud member of the American College of Gastroenterology. He is dedicated to providing comprehensive and compassionate care to his patients, with a particular focus on advanced therapeutic endoscopy. Dr. Baez offers state-of-the-art diagnostic and treatment options for a variety of gastrointestinal conditions.

When not practicing medicine, Dr. Baez enjoys traveling, reading, and spending time with family.


Cindy Chang

Alicia Encinas

Nurse Practitioner in Tucson, AZ

Mesquite Gastroenterology and Surgery Center

Certified Family Nurse Practitioner with over 16 years of healthcare experience. I began my nursing career after graduating with a Bachelor of Science in Nursing from Grand Canyon University in 2009. For 13 years, I worked as a Registered Nurse in high-acuity settings, including ICU, Emergency Medicine, and CVICU, where I was a clinical lead, developed expertise in critical care and complex patient management. 

In 2020, I earned my Master of Science in Nursing from United States University with distinction and transitioned into advanced practice in internal medicine. Managing patients in acute settings across both hospital and skilled nursing facilities for 3 years. 

Passionate about delivering evidence-based, patient-centered care that empowers individuals to take an active role in their health. 

Outside of work, I am married and a proud mom of three daughters. I enjoy spending time with family and friends, and love being outdoors.

Our Location

Find us on the map

Hours of Operation

Our Regular Schedule

Mesquite Gastroenterology and Surgery Center

Monday:

8:00 am-3:00 pm

Tuesday:

8:00 am-3:00 pm

Wednesday:

8:00 am-3:00 pm

Thursday:

8:00 am-3:00 pm

Friday:

8:00 am-12:00 pm

Saturday:

Closed

Sunday:

Closed

Testimonials

  • "Jackie Camargo is an individual who truly loves what she does and that is evident from the moment you walk through her door. She is warm, caring, good listener and a truly excellent provider. I would recommend her to all of my family and friends."
    Sky
  • "Jackie is amazing. Very thorough and such a pleasure!! My results were exactly what I was looking for and I would recommend her highly to anyone."
    Kelly
  • "I had literally tried EVERYTHING for weight loss with no success until I met Jackie. Her clear and easy plan helped me drop 25 lbs in 8 weeks. I would recommend her to anyone who is serious about making a change and needs the proper guidance and accountability."
    Jodi
  • "I love Dr. Arenas and his staff. I had two endoscopic procedures and all was smooth. Good follow up . Professional and highly recommend. Sandra Voorhis"
    Sandra V
  • "Jackie is the best. She is the most supportive healthcare provider I have ever dealt with. With her help, I lost just under 60 pounds and have learned to keep it off. She’s always a text or call away for support or questions. I would recommend her services to anyone that wants real, long lasting weight loss support."
    Liz