Mrs Mariana  Ontiveros

Mariana Ontiveros

Internal Medicine

2009 Pat Booker Road
Universal City, TX 78148
(210) 742-6555



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Office Hours
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Closed 08:00am to 04:15pm 08:00am to 04:15pm 08:00am to 04:15pm 08:00am to 04:15pm 08:00am to 04:15pm Closed
This provider is not accepting online appointments currently. Call the doctor's office at (210) 742-6555 to book an appointment.
Ms. Mariana Ontiveros is originally from Arizona and has been living in San Antonio after completing her masters program from Grand Canyon University in 2022. She is certified by the American Association of Nurse Practitioner and has over six years of nursing experience with a majority of it spent working in critical care. While caring for her very sick patients in the ICU, she realized the importance of preventative medicine and chronic disease management. Mariana knew she would be able to make a positive impact as a nurse practitioner helping her patients stay out of the hospital in the primary care setting while providing holistic care. Her goal as an FNP is to ensure her patients have all the information they need about their health so they can leave their appointment feeling confident about their care.

When not at work Mariana enjoys spending time with her cats, going to the movies with her fiance, and watching baseball.

See my practice's website at:

2009 Pat Booker Road
Universal City, TX 78148

Hours of operation

Monday 8 am - 4:15 pm
Tuesday 8 am - 4:15 pm
Wednesday 8 am - 4:15 pm
Thursday 8 am - 4:15 pm
Friday 8 am - 4:15 pm