About us

OUR TEAM


Dr. Melissa Miskell, Founder

OUR TEAM

Our founder, Dr. Melissa Miskell, has owned a medical practice for over 17 years. During her time in practice, she saw how the symptoms of menopause and peri-menopause negatively effected the quality of life for multitudes of women. So she decided to do something about it…without using harmful prescriptions like Premarin and Provera. The other problem she set about tackling was that laboratory testing for hormone imbalance was very expensive. She created Hormones by Design. Here we can draw your labs, treat you, and get you back to your busy life! All this at an affordable price.



Dr. Melissa Miskell
Dr. Keeli Stumbo, M.D. – Waco

Dr. Keeli Stumbo, M.D. – Waco


Dr. Keeli Stumbo has been a practicing Gynecologist since 1999 and knows Women’s Healthcare. She has lived all over the state of Texas and is happy to now call Waco home. She is truly passionate about helping you with hormone imbalance. She understands how hormone imbalance can have negative effects on your life and relationships. She also insists on only using bio-identical hormones (hormones that are replicas of the hormones made by the human body). She is proud to join the team at Hormones by Design where we only use bio-identical hormones.

In her spare time, Dr. Stumbo enjoys spending time with her family, reading, and exercising.

Susan Hancock, APRN, WHNP-BC, RNC-BC – Waco


Suzi has been a Women’s Health Nurse Practitioner for more than 15 years, and before that she worked for many years as a labor and delivery nurse. She has experience in bio-identical hormone replacement therapy, weight loss, and wellness. Suzi and her husband have 8 children and 6 grandchildren! They are a “sports family“. Her husband played college football and on the weekend you will frequently find them at a college game or one of their grandchildren’s sporting events.

Patricia “Pat” Berg, APRN, WHNP-BC – Waco

Patricia “Pat” Berg, APRN, WHNP-BC – Waco


Pat has been a Women’s Health Nurse Practitioner for 35 years.  She is a Waco native, however military life, education, and career have kept her away from Waco in past. Despite that, she has been able to find her way back to family, friends, and Central Texas for the last 30+ years.

She has previous Emergency Room and OB/GYN experience but has found that her true niche is anything that helps to empower and improve women’s lives and health.  She understands that hormone replacement is a big part of that.

In her spare time, Pat loves anything to do with home improvement.  Although she is not a Baylor graduate; you will most likely find her at a Baylor sporting event or somewhere watching and supporting.  Between Baylor athletic seasons, she will most likely be planning a getaway involving water.

Nancy Beebe, APRN, FNP-BC – Boerne


Nancy graduated from the University of Texas at Austin with her nursing degree, and was a career-long labor and delivery nurse. She also worked in an OB/GYN office and taught childbirth education classes. Her family nurse practitioner degree was earned from the University of Texas Health Science Center San Antonio, where she graduated with high honors. Her board certification is held from the American Nurses Credentialing Center. Nancy’s nurse practitioner background is in family practice, with interests in women’s health and allergy and immunology.

Her desire as a health care provider is to make each patient feel comfortable and to take time to listen to each individual’s concerns. Nancy sees both men and women for hormone related issues, an is accepting new patients in our Boerne location. Nancy has been married to Chip for over 20 years. They have three grown daughters who keep them quite busy. Her interests outside of work include music, outdoor activities, and photography.

Maricela “Marcie“ Mazuca, PA-C – San Antonio


Marcie sees both men & women and is right at home with our practice philosophy. She joined our team in 2015 with 8 years of experience in bio-identical hormone therapy and supplements. Her Physician Assistant degree is from UT Health Science Center in San Antonio. She has twin daughters that keep her very busy outside of work.  Marcie is accepting new patients in our San Antonio location.

Kimberly McCollum, APRN, WHNP-BC – San Antonio


Kimberly graduated from the University of Texas at San Antonio with a Bachelor of Science in Biology in 2009. In 2012, she went on to receive her associates in nursing from Baptist School of Health Professions and began her career as a nurse. Kimberly worked as a labor and delivery nurse for many years and truly enjoyed caring for mothers and babies. Recently, she earned her master’s in nursing from Regis College in Weston Massachusetts and is a Certified Women’s Health Nurse Practitioner. 

Kimberly has been happily married for over 10 years and has two beautiful daughters. When she isn’t on the soccer field cheering for her girls, she enjoys spending time with friends and family. Kimberly also loves spending time at church and serving her community through eucharistic ministry. 

Kimberly is accepting new patients for hormone therapy and gynecology in the San Antonio location.

Rae Benson, APRN, FNP-BC – New Braunfels


Rae Benson earned her Nurse Practitioner degree from University of Nebraska Medical Center and has been with us for 15 years now. She is a multi-talented lady who sees both men and women for hormone related issues as well as performing annual exams and other gynecology services. She stays close to home at our New Braunfels location and is accepting new patients.

On a more personal note, Rae is formerly a member of the Army Reserve and has been married to her high school sweetheart for 26 years. Her three daughters are now grown and Rae is happy to become the “mother of the bride,” and a grandmother. When she’s not helping to plan a wedding, Rae enjoys gardening and exercising.



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There are hundreds of clinics attempting to treat hormone imbalance. What makes us different? We listen, then we take action. Our business model makes it possible for us to start your treatment on day one. Faster treatment = feel better faster.
Hormone Replacement Therapy in San Antonio, Waco, New Braunfels, and Boerne

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