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

    The front staff are fri melt and attentive. I have been a patient of Dr. Munoz for many years and he always takes the time to listen to concerns and explains treatment that is necessary.

    Gynecological Problem Visit

    Dr Munoz is a very knowledgeable kind with a wonderful bedside banner

    Annual Well Woman Exam

    Great service, clean room, just waited a while. I'm anxious going into my annual so sitting waiting longer than expected heightened my anxiety.

    Annual Well Woman Exam

    Dr and Staff is very professional and comforting.

    Annual Well Woman Exam

    As always, Dr. Munoz is thorough and patient. He is extremely attentive and ensures his patients are comfortable.

    STI Testing / Treatment

    She took her time explaining things in detail to me, gave me some cream to use and even told me to pull out my Amazon so she could show me the cream to order to help with my blisters. Went above and beyond and answered all of my questions

    Annual Well Woman Exam

    Dr Munoz always takes the time to speak with me prior to the examination, I love that he remembers our conversations from previous visits. Super understanding and gentle.

    Pap Smear

    Aside from the fact that I had to drive far to get to the new office the nurse practitioner PA was nice and thorough.

    Gynecological Exams

    I've Known Dr. Cristina Simpson since my son's age. Oh, and guess what, she delivered my son. It is always a pleasure catching up with her and her staff is a wealth of knowledge. Thank you!

    Annual Well Woman Exam

    Dr. Schaefer is kind and very knowledgeable. She takes her time in explaining symptoms and concerns.