CHRISTUS St. Mary’s Clinic

 “Before I found CHRISTUS St. Mary’s Clinic, I thought I was going to have to live the rest of my life feeling as if someone is sitting on my chest.

I’m 50 years old, I don’t have extra money to see a doctor or buy asthma medication. St. Mary’s Clinic is a Godsend, I am now able regularly visit a doctor who I can afford, the Clinic helped me find medication to control my asthma.

This is the first time in my life that I can take a breath and not wheeze. Thank you for helping me manage and live with asthma.”

One of Sister Rosanne Popp, M.D.’s patients

Directed by Sister Rosanne Popp, M.D., CHRISTUS St. Mary’s Clinic provides vital healthcare services to low-income patients in an under-served Houston community near Interstate 45 South and Wayside Drive. St. Mary's also serves as homebase for the CHRISTUS Healthy Neighborhoods Initiative.

Collaborating with CHRISTUS Healthy Living Mobile Clinics and CHRISTUS School-based Clinics.

CHRISTUS St. Mary’s Clinic Address and Hours

2120 S. Wayside Drive, Suite B
Houston, Texas 77023

  • Monday through Friday: 7:45 a.m. – 4:30 p.m.
  • Saturday: 8:00 a.m. – 11:00 a.m.
  • Phone: 713.803.1840

Clinic Providers

The driving force at CHRISTUS St. Mary’s Clinic, Sister Rosanne Popp, M.D., is a member of the Congregation of the Sisters of Charity of the Incarnate Word (CCVI), the religious congregation that authored the mission of CHRISTUS Health.

Over the last three decades, Sister Rosanne has accumulated missionary experience in the United States and abroad, along with enough degrees and awards to fill an office wall, which they do. Sister Rosanne received her Bachelor of Science degree in nursing at Incarnate Word College and followed with a Master of Science degree from the Medical College of Virginia.

Sister Rosanne also received her Doctor of Medicine degree from the University of Texas Health Science Center and posted the highest score of any Texas doctor on the United States Medical License Examination.

“My work really fits who I am,” says Sister Rosanne, “Just as I was drawn to the incarnational spirituality of our congregation, I am nurtured by the earthiness of my daily work in the clinic. As I see it, this is where the rubber meets the road.”

Sister Rosanne Popp, M.D.

Sister Rosanne Popp, M.D.

CHRISTUS St. Mary’s Clinic Medical Director

Teresa received a degree in Health and Human Performance from the University of Houston. Upon graduation, she began working as a high school teacher but found she had a passion for nutrition and dietetics and pursued an additional degree in Nutrition from University of Houston. Teresa completed her dietetic internship in 2015 from Dominican University in Chicago, IL.

Since then, Teresa has worked closely with the Houston community to fight the obesity epidemic and educate the under-served population. Teresa’s past experience includes The Houston Food Bank, Women Infants and Children’s supplement program (WIC), and Children’s Nutrition education programs.

Teresa is based at St. Mary’s clinic and  also works with CHRISTUS Point of Light, CHRISTUS Healthy Living Mobile Clinics, and CHRISTUS School Clinics. Teresa works with patients to educate them on how to manage illnesses such as Diabetes, Cholesterol, Hypertension, Obesity and many other nutrition related illness through lifestyle change.

Teresa’s Hobbies include; working out, dancing, hanging out with her Pomeranian and cooking healthy meals.

“My favorite part about my job is seeing my patient’s health improve and being able to work with the different CHRISTUS Health GCTX departments.  This allows me to reach more people in the Houston area in greater levels. There is never a dull moment especially since I work with such a great group of people.”

Teresa Rivera

Teresa Rivera

CHRISTUS St. Mary’s Nutrition Health Educator


  • No insurance, accepted
  • No eligibility requirements
  • Diabetes
  • High blood pressure
  • High cholesterol
  • Gastritis
  • Arthritis
  • Dermatology
  • Depression
  • Menstrual Problems
  • Back and joint pain
  • Bronchitis
  • Minor injuries
  • Thyroid, kidney, liver and heart disorders
  • Chiropractic Services
  • Podiatry Services

Success Stories

Did you know CHRISTUS St. Mary's Clinic...


Helped via the Prescription Assistance Program; providing $1,976,441.76 worth of medications.


Served with compassionate health care including routine wellness exams.


Administered free and low-cost immunizations to those patients in need.