Our Staff

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Nicole Crosby, APRN, AGNP-C – Founder & Vice President

Nicole is a certified Adult – Geriatric Nurse Practitioner. She earned her master’s degree from the University of Texas Medical Branch in 2014. She started her journey in medicine in 2007 as an emergency room nurse for many years working in trauma hospitals and home health from South Carolina to Washington State before advancing her career as a nurse practitioner. She has worked in the Houston area as an NP since 2014 by starting out in Internal Medicine and rehab hospitals before finding her passion for treating men and women with hormone replacement.

Nicole has a wealth of knowledge and expertise when it comes to treating hormone disorders such as hypogonadism, andropause, thyroid disease, PCOS, menopause, adrenal fatigue, diabetes, weight management, and a variety of acute and chronic conditions. She is certified in penile shock wave therapy for erectile dysfunction and certified in placement and management of hormone pellet therapies. Nicole has spent many years teaching and mentoring new providers the art of treating and managing hormone disorders.

Nicole is committed to her patients by helping them achieve a better quality of life through health, happiness, and the positive outcomes that come from balancing one’s hormones. She has worked to develop a model where all patients’ needs are met with convenient options, while focusing on delivering the best care possible with a personalized touch.


Lucas Tipton, FNP-C 

Lucas is a certified Family Nurse Practitioner. He completed his undergrad education at the University of Oklahoma Health Sciences Center and upon graduation, he started his nursing career in West Texas as an intensive care nurse. He later traveled to practice in Washington State and earned his master’s degree from the University of Texas at Arlington in 2020.

As a Family Nurse Practitioner, he has provided patient-centered care to individuals of all ages. The transition from registered nurse to nurse practitioner during a global pandemic provided a unique opportunity to gain valuable experience in a time characterized by an ever-changing situation and groundbreaking advances in medicine. He strongly believes in the core values of wellness and a healthy lifestyle that Vitality encompasses through comprehensive healthcare. Lucas is excited to bring his past experience in acute care and clinic settings to the Vitality family.

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Nadia Shah, APRN, FNP-BC

Nadia Shah is a Board Certified Family Nurse Practitioner with a passion for healthcare and improving the lives of her patients. She has been a nurse for over eight years, gaining valuable experience and expertise in various healthcare settings.

Nadia started her career as a registered nurse working at Methodist Willowbrook Hospital. She then pursued travel nursing. She has worked at various hospitals across the country, where she gained hands-on experience in providing patient care and developed strong clinical skills.

During her nursing career, Nadia developed a strong interest in primary care and patient education. She decided to pursue a master’s degree in nursing to become a nurse practitioner and expand her scope of practice. Nadia’s goal is to focus on health promotion and disease prevention; she is a strong advocate for healthy living. Nadia’s new passion is in Aesthetic medicine for which she is passionate about helping patients look and feel great!

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Cindy Guardado, FNP-C

Cindy is a certified Family Nurse Practitioner with more than 9 years of
nursing experience. She completed her BSN in 2014 at the University of
Texas Health Science Center Houston. After graduation, she gained valuable
skills and knowledge working as a neonatal ICU nurse and post anesthesia
care unit nurse.
In 2018, she decided to pursue her master’s degree as a family nurse
practitioner at UT Cizik School of Nursing in Houston. As a family nurse
practitioner, most of her training and experience has been in weight loss and
hormone management. She is passionate about health and wellness and
enjoys helping patients achieve their most optimal self.

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Kenneth Wu, MD – Chief Medical Officer

Dr. Wu is a dual board-certified physician in anesthesiology and pain management. He completed his medical education at Baylor College Medicine he went on to complete a fellowship at Rush Medical Center in Chicago. Prior to joining the practice, Dr. Wu was the director for the Geriatric Pain Center at UT Physicians Center for Healthy Aging as well as the chief interventional pain management physician at Memorial Hermann TIRR Center.

Due to his vast past experiences, Dr. Wu has specific interests in neurological injuries of the peripheral nerves and the central nervous system as well persistent post-surgical pain syndromes. He is one of the nation’s leading experts in treating Complex Regional Pain Syndrome (CRPS) and is an adjunct professor with UT Physicians.

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Yoann Millet, MD – Dir. of Sexual Health

Dr. Yoann Millet is a dual board-certified physician in anesthesiology and pain management. He completed his undergraduate education at Cornell University & obtained his medical training at Weill Cornell Medical College. He went on to complete a general surgery internship at New York-Presbyterian Hospital-Weill Cornell Medical College and his residency in anesthesiology at Baylor College of Medicine in Houston. He received subspecialty training in pain management at the elite Duke University pain fellowship program.

For Vitality, Dr. Millet specializes in preventative medicine, sexual health, regenerative medicine and anti-aging. He is also a clinical assistant professor in the Department of Internal Medicine at UT McGovern Medical School.

He is fully committed to providing compassionate, personal, multidisciplinary care to Vitality’s clients.


Sherita Woods, Director of Operations

Sherita is an experienced Healthcare Professional that is currently pursuing her Bachelor’s Degree in Healthcare Management and Administration.
Since starting her career in the Dental field in 2001, she’s always known that she wanted to be involved in the healthcare field. Sherita possesses strong leadership and communication skills and is an acting liaison and advocate for patients and staff. She has worked in all aspects of healthcare facilities including working alongside doctors and specialists all over the Houston area. In her spare time, she enjoys hosting marketing and health fairs within the community and bringing health awareness to others. Her passion for helping individuals succeed in receiving the quality treatment they need and deserve to feel great is one of her best qualities!


Vitality Staff

  • Nicole Crosby, APRN, AGNP-C – Founder & Vice President
  • Lucas Tipton, APRN, FNP-C – Spring Cypress Location
  • Nadia Shah, APRN, FNP-BC- Spring Cypress Location 
  • Cindy Guardado, FNP-C- Spring Cypress Location
  • Kenneth Wu, MD – Chief Medical Officer
  • Yoann Millet, MD – Director of Sexual Health
  • Sherita Woods – Director of Operations
  • Madison Rodriguez – Clinical Manager 
  • Heather Hirschman- Certified Holistic Health Coach & Nutrition Consultant

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