Our approach is comprehensive and personalized.


Type 1, type 2, gestational diabetes, pre-diabetes, weight management


Hyperthyroidism, hypothyroidism, thyroiditis, thyroid cancer

Transgender medicine

Masculinizing hormone therapy (testosterone), feminizing hormone therapy (estradiol), fertility issues after hormone therapy. Learn more.


Osteoporosis, osteopenia, hyperparathyroidism, hypoparathyroidism


Female reproductive

Polycystic ovarian syndrome, amenorrhea, menopause symptoms, lactation induction in non-gestational parents, workup of infertility

Male reproductive

Low testosterone, workup of infertility


Adrenal nodules, primary hyperaldosteronism, Cushing's syndrome, pheochromocytoma, congenital adrenal hyperplasia, endocrine hypertension


Pituitary tumors, prolactinoma, acromegaly, Cushing's disease

Dr. Zwiener's expertise in transgender medicine makes Braeswood Endocrinology the best place to be.


Transgender medicine

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

Dr. Zwiener is committed to assisting transgender, intersex, and gender diverse individuals throughout their transition process. She is comfortable initiating and maintaining hormone therapy, can refer you to surgeons and/or mental health professionals if needed, will help navigate the name and gender-marker change process, and is happy to provide letters for gender confirmation surgeries. Her office is a welcoming environment: we will use your chosen name and pronouns, and will always treat you with the highest level of respect. Since she is out of network with insurance companies, your medical records will be kept completely confidential; they will never be shared with your employer or any other third party, unless you request them to be.  Additionally, she can manage related aspects of your health, such as cancer screenings (mammograms, pap smears, and prostate exams) and basic primary care.