Internal Medicine & Nephrology Associates Office: 936-328-5820  |  Email:
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About Us

Founded in Livingston, Texas in 2005, IMNA is dedicated to promoting the good health of our community. Our physicians and nurses treat a wide array of patients, from children and youths to adults and seniors, and are knowledgeable in an extensive range of diseases and maladies. As your primary care physicians, we strive to build a partnership with you that will foster your great health, for life.

Dr. Elias T. Kanaan

Dr. Elias T. Kanaan has been a fixture in Livingston medicine since 1998, specializing in adult patients 18 years of age and older. He founded IMNA in 2005 as a practice devoted to improving the health of his community- a goal which he works towards in his role as Health Officer for Polk County, an office he has held since 2005. Dr. Kanaan’s dedication to his patients has also enabled him to previously serve as Chief of Staff at Memorial Medical Center, as well as Chief of Medicine at both Memorial Medical Center and Cleveland Regional Hospital. As a primary care physician, Dr. Kanaan acts as the gatekeeper of his patients’ health and dedicates himself to their overall well-being. By taking the time to get to know everyone who visits his office, Dr. Kanaan is able treat the person as a whole and not simply the disease or concern that is affecting them. He is known in the community for the all-inclusive nature of his practice, and follows up with patients should they require a specialist referral, hospitalization or nursing home care. Dr. Kanaan is committed to this partnership for health that he builds with his patients, and to providing IMNA’s characteristic in-depth, detailed and holistic care for his community.

When he is away from the office, Dr. Kanaan enjoys fishing and spending time with his wife and their two sons, Leo and Andrew.


  • Medical School: St. Joseph’s University Faculty of Medicine, Lebanon, 1993.
  • Internship, Internal Medicine: Cooper Hospital-University Medical Center, New Jersey, 1994.
  • Residency, Internal Medicine: Cooper Hospital, New Jersey, 1996.
  • Fellowship, Nephrology: Rhode Island Hospital-Brown University, Rhode Island, 1998.
  • Primary Hospital Affiliation:  CHI St. Lukes, Livingston, TX


  • American Board of Internal Medicine
  • Educational Commission for Foreign Medical Graduates, 1993.
  • Dr. Kanaan is a member of the Texas Medical Association and the Liberty-Chambers Medical Society.
Dr. Hung Bui

Dr. Hung Bui has practiced family medicine in Livingston for 11 years, and joined the IMNA team in 2012. In Dr. Bui's office, the patient is the boss. He is passionate about providing the absolute best medical care and counselling and works with the patient to choose, together, the correct course of action for that individual. Dr. Bui enjoys building close relationships with his patients and offers them the same medical advice and care that he would offer to his own family members. He is dedicated to the health of the whole family, and enjoys providing ongoing, personalized care for his patients from childhood well into adulthood and old age.

When he is away from the office, Dr. Bui enjoys spending time with his wife and playing with their three children.


  • Medical School: Ross University School of Medicine, 2001.
  • Residency, Family Practice: San Jacinto Baylor Methodist Hospital, 2004.
  • Primary Hospital Affiliation: Woodland Heights Medical Center, Lufkin, TX


  • The American Board of Family Practice
Mary Norris, NP

Our Nurse Practitioner, Mary Norris, is an invaluable part of the IMNA team. She has dedicated her 25-year-long career to nursing and has spent the previous 10 years as an ICU nurse before joining IMNA in 2014. Mrs. Norris prides herself on her holistic approach to medicine, and on maintaining a provider-patient relationship founded on dignity and respect. This thoughtfulness and knowledge allows Mrs. Norris to be a patient advocate who works to ensure that every treatment choice meets her patient’s individual needs. Mrs. Norris is dedicated to providing thorough care and examinations for all of her patients, and is especially interested in the care of women and in women's health issues.

When she is away from the office, Mrs. Norris enjoys travelling, SCUBA diving, and deep-sea fishing, as well as spending time with her husband, children, and four grandchildren.


  • Post Masters Family Nurse Practitioner Certification: University of Texas, Tyler, 2013.
  • Masters of Science, Nursing Education: University of Texas, Tyler, 2007.
  • Bachelor of Science, Nursing: Texas Tech University Health Sciences Center, Summa Cum Laude, 2004.
  • Associate of Science, Nursing: McMurry University, 1991.


  • Nurse Practitioner Certification
  • Advanced Practice Nurse

Mary R. Norris, NP, is a member of the Texas Nurse Practitioner Association, the American Association of Nurse Practitioners, the American Association of Critical Care Nurses, and the American Heart Association.

Jean Bybee

Miss Bybee has been with Dr. Kanaan longer than any of us. Jean has been a very valuable employee who has worked in our office since July 2007. She has been in the medical field for 42 years. She currently sees patients in the office as well as the nursing home.


1995-1997 University of Texas Medical Branch, Galveston
School of Physician assistant studies
1983-1985 University of Texas Health Science Center at Houston
School of Blood Bank Technology
1967-1969 University of Massachusetts, Amherst, MA
Bachelor of Science in Animal Science
Debra Clemons, Office Manager

Our Office Manager, Debra Clemons, has been a treasured part of IMNA for 6 years. She is the woman "behind the curtain" who keeps this ship running smoothly. Mrs. Clemons is responsible for all of the scheduling needs of the office and maintains a productive and fulfilling work environment for our staff. Mrs. Clemons helps the practice to adhere to its standards and ensures that the staff, nurses, and physicians have the support they need to provide excellent medical care for each patient.

When she is away from the office, Mrs. Clemons enjoys spending time with her husband, three adult children and four grandchildren, and loves camping with her family, fishing, and deer hunting.