Mrs Mariana  Ontiveros

Mariana Ontiveros

Internal Medicine

12410 Toepperwein Road
San Antonio, TX 78233-0000
(210) 742-6555



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Office Hours
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
12:00am to 12:00am 07:30am to 04:00pm 07:30am to 04:00pm 07:30am to 04:00pm 07:30am to 04:00pm 07:30am to 04:00pm 08:00am to 12:30pm
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 leaving 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 preventative medicine and chronic disease management. Mariana knew she would be able to make a positive impact as 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 fianc, and watching baseball.

See my practice's website at:

12410 Toepperwein Road
San Antonio, TX 78233-0000

Hours of operation

Sunday 12 am - 12 am
Monday 7:30 am - 4 pm
Tuesday 7:30 am - 4 pm
Wednesday 7:30 am - 4 pm
Thursday 7:30 am - 4 pm
Friday 7:30 am - 4 pm
Saturday 8 am - 12:30 pm