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:

    Pap Smear

    Efficient, clean and friendly.

    Pap Smear

    Iam happy with the Dr.Alka Arya .she was so with me,she did explain so well. Thank you so much Dr.Alka Arya

    Annual Well Woman Exam

    Highly recommend. Very attentive . Never rushes between rooms dedicated to her patients

    Menopause Management / Education

    Staff are friendly and efficient. Dr Shaffer listens to concerns and I feel her professional care is genuine in wanting to help patients.

    Annual Well Woman Exam

    Dr Munoz is extremely sensistive to my needs! In addition, Nina went above and beyond with the customer service she provided me!

    Urinary Tract Infection (UTI)

    So satisfied with my visit with Mr. Munoz. He answered my questions, didn't rush me and lowered my anxiety about my issues.

    Pap Smear

    Dr Simpson is a very caring Dr. have been seeing her for many years. I trust in her completely.

    Annual Well Woman Exam

    Very respectful staff and addressed all my concerns

    Pap Smear

    Dr Arya very patient-oriented, listened to my concerns and provided answers. Gentle hands during the exam.

    Gynecological Exams

    I like the gentle manner of Dr. Munoz. I like the way that he actually listens to me and my concerns.