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

Hospital Affiliations

  • Banner Thunderbird Medical Center


All went well and all medical personnel was extremely kind and helpful. Facility was clean and quiet. Staff was efficient and knowledgeable but friendly and helpful

D.V. Google

Doctor Aria is one the best physicians I have ever met. She listens to you, explains the details of the procedure and actually cares for you. Her staff at the office are superb as well.

R.C. Google

Refreshing to find a dr who listens to the patient, is knowledgeable, and genuinely concerned for the welfare of other.

T.L. Google

Dr. Atia is excellent: intelligent, intuitive, knowledgeable. Highly recommended. As a huge plus, her office staff are excellent as well, which is so important to a patient's overall experience.

D.G. Google

Dr. Atia is fantastic. She takes the time to listen and discuss / consider options. First GI doc I’ve ever had that helped me achieve even moderate remission. Her staff, especially assistant Maybelin, are super helpful and responsive. I’ve had nothing but a positive experience as their patient.

J. Google


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