It can be difficult to find a physician who is knowledgeable about the unique issues faced by transgender people.

Dr. Zwiener is committed to assisting transgender, intersex, and gender diverse individuals throughout their transition process. She specializes in hormone replacement therapy for trans men and women and focuses on providing endocrinology care tailored to their needs.


our comprehensive approach

If you're looking for specialized treatment, you've found the right place.

  • A doctor that understands you. No need to worry about educating your doctor regarding your unique needs! Dr. Zwiener's focus and expertise is in assisting transgender people with the medical aspects of their transition process.

  • Expertise. Dr. Zwiener has a deep understanding of hormones and hormone therapy, and is able to tailor a treatment regimen to your specific goals. She is comfortable using all types of estradiol and testosterone (including injections, topical creams, and patches), estradiol-only regimens, and progesterone.

  • Autonomy over your health. In most cases, Dr. Zwiener is able to prescribe under an Informed Consent model, which means she can provide the necessary hormones without requiring a letter from a mental health professional, saving you time and money.

  • Comprehensive care. We can manage related aspects of your health, such as cancer screenings, fertility issues, and preop and postop care.

  • A safe and welcoming space. We will always use your chosen name and correct pronouns, and will do everything we can to help you feel comfortable during your visit.

  • Guidance every step of the way. In addition to hormone replacement therapy, Dr. Zwiener can assist you in navigating surgical and mental health options, name and gender marker changes, and local support groups.

We're not your traditional endo clinic

Straightforward pricing

We charge all our patients the same low rate - no surprises.


Hassle-free booking

Schedule your appointment online at your convenience - no need to call during business hours.

Devoted care

We schedule enough time at each visit to make sure all of your questions are answered.

Within your reach

Follow-up appointments may be done by video chat for your convenience.


Save on lab costs

If paying upfront for labs, we offer discounted pricing of 85-90% off standard rates.

Close to you

Conveniently located just outside the 610 Loop near the Galleria in Houston, TX.