Mary A. Atia, M.D.



20033 N 19th Ave Ste 106

Phoenix, AZ 85027

Open today 8 AM - 4:30PM

Quick Facts

  • Colon Cancer Screenings
  • IBD, Crohn’s Disease, Ulcerative Colitis
  • Acid Reflux/Heartburn
  • Expert Endoscopy and Colonoscopy
  • Currently Accepting New Patients
  • Most Insurance Plans Accepted

Phoenix - 19th/101

Gastroenterology in Phoenix, AZ

Phoenix - 19th/101

20033 N 19th Ave

Ste 106

Phoenix, AZ 85027

Open today 8 AM - 4:30PM



Gastroenterology in Glendale, AZ


5823 W Eugie Ave

Ste A

Glendale, AZ 85304

Open today 7 AM - 4 PM


Thunderbird Endoscopy Center

Gastroenterology in Glendale, AZ

Thunderbird Endoscopy Center

5823 West Eugie Avenue

Ste. B

Glendale, AZ 85304

By appointment only.

Request Appointment

If you are experiencing a medical emergency, please call 9-1-1. This form is intended for non-urgent appointment requests only. Non-emergency requests will be responded to within 24-48 hours.

About Mary A. Atia, M.D.


  • B.A. – Rice University, Houston, TX
  • M.D. – Keck School of Medicine, University of Southern California
  • Internal Medicine Residency – Cedars Sinai Medical Center & West Los Angeles Veterans Administration
  • Gastroenterology Fellowship – Mayo Clinic Arizona

Board Certification

  • American Board of Internal Medicine – Internal Medicine
  • American Board of Internal Medicine – Gastroenterology

Associations/ Memberships

  • American College of Gastroenterology
  • American Association for the Study of Liver Diseases
  • American Gastroenterological Association
  • American College of Physicians

Awards or Distinctions

  • Phoenix Magazine: Top Doctor in Gastroenterology (2024, 2023, 2021, 2019)

Hospital Affiliations

  • Banner Thunderbird Medical Center


Dr Atia was very knowledgeable and explained issues in understandable language!

D.G. Google

Dr. M. Atia and her office staff have always been very professional. Dr. Atia is always on time, she takes her time with me. She doesn't rush the visit. She talks about the plan and the options. She gives me the sense of someone that really cares about you as a person and not another number or task. I have not had a negative experience with her office staff or her. I would recommend her always. Thank you, Dr. Atia.

D.S. Google

Dr Atia and her assistant, Maybelline are so attentive to her patients. I am so grateful for the immediate attention I receive.

D.D. Google

Met Dr. Atia for the first time. Extremely comfortable in her presence. Very detailed and good answers to my questions as well as great questions to sincerely learn about me. I can highly recommend Dr. Aria.

B.G. Google

Arizona Digestive Health is great for your health care. Dr Atia is very helpful to your concerns and she lets you participate in solving the problems that arise. Her MA Madelin is also friendly and professional while assisting you with your surgeries and follow up appointments.

A.S. Google


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