Welcome to Riverwalk OBGYN

Overall patient rating:

In 1979 Tristan Castaneda, MD started with a simple premise: Make available to every woman the health resources she needs to live a healthy, active, and long life. At the same time, educate each woman about the importance of preventative health measures. This same idea still drives us today, some 30 years later. The track record we’ve accumulated over the years speaks to our commitment to patients, their families, and the community at large. Both our medical and office staffs are second to none, who genuinely take an interest in individual patient’s needs. We think you’ll notice the difference immediately when you step foot inside our doors. We’d love to see you today to map out a health and wellness plan that’s tailored to your health history and needs.

About Our Practice

  • Providers

  • Services

  • Links And Forms

  • Locations

  • Contact Us

  • Alka Arya Degaetano

    DO
  • Ricardo Munoz

    MD
  • Stephanie Schaefer

    MD
  • Christina Simpson

    MD
  • Heather Williams

    MD

We Provide The Following Services

  • Obstetrics + Reproduction
  • Pregnancy Care and Delivery
  • Contraception
  • Ultrasound and Imaging
  • Gynecology + Wellness
  • Annual Exams
  • Menopause
  • Urogynecology

Riverwalk OBGYN: San Antonio Office

  • Monday: 8:30AM - 5:30PM
  • Tuesday: 8:30AM - 5:30PM
  • Wednesday: 8:30AM - 5:30PM
  • Thursday: 8:30AM - 5:30PM
  • Friday: 8:30AM - 5:30PM

Send Us a Message

    Patient Reviews

    Overall patient rating for Riverwalk OBGYN:

    Annual Well Woman Exam

    Staff was very friendly and helpful. Dr. Munoz is an excellent physician. He is knowledgeable and attentive he really cares about your wellbeing.

    Pap Smear

    It kinda far from home but I’m glad I went to visit my dr Cristina Simpson again. Thank you.

    Annual Well Woman Exam

    Dr. Shaefer is thorough, knowledgeable, and caring. I appreciate how well she listens and explains.

    Annual Well Woman Exam

    It was my first visit with NP Sarah Harville. She was very friendly yet professional, compassionate and thorough. NP Harville was wonderful. I was in and out in a very timely manner (first time ever).

    Annual Well Woman Exam

    Dr. Munoz is very professional and caring.

    Office Visit / Follow-up

    Didn't wait that long

    Gynecological Problem Visit

    My primary physician detected a condition and requested I see my gynecologist. Dr. DeGaetano listened patiently to my concerns and then I completed the necessary tests. Dr. DeGaetano has been my gynecologist for many years. I trust her immensely. She is very professional, knowledgeable, patient and always has the patient's best interest in mind. (My sister also sees Dr. DeGaetano.) She has never rushed my visits and treats me with dignity and kindness. I am very blessed to have her as my physician.

    Annual Well Woman Exam

    First time in the new office. It was very efficiently run. Great experience!

    Pap Smear

    Love Dr. Simpson but the over an hour wait before getting into a room was a little long. The new location is certainly not convenient but I like her so much, I’ll keep seeing her there.

    Pap Smear

    Dr. Munoz made me feel very comfortable. He was very kind and patient. The Pap smear was not unpleasant like at other places. He is very skilled.