The team at our clinic is dedicated to providing you with quality care. We believe in building long-term relationships with our patients, and we take pride in providing personalized treatment plans that meet your needs.


We're always here to answer any questions you may have, so please don't hesitate to contact us.


Thank you for choosing our clinic!


Cristy O'Connell

Family Nurse Practitioner & Owner

As our owner and Family Nurse Practitioner, Cristy O'Connell is committed to patient care and advocacy. Cristy has been a Family Nurse Practitioner for several years with experience in emergency medicine, family medicine, pediatric care, urgent and primary care. Cristy is board certified with the American Academy of Nurse Practitioners, as well as a member of the organization. Prior to opening Health Xpress Medical Center, Cristy was the CEO and Family Nurse Practitioner of an Urgent and Primary care clinic.  She also has taught nursing school clinical for both RN and NP students. Before becoming a Family Nurse Practitioner, Cristy worked as a full-time Registered Nurse in the Emergency Department.  Outside of the clinic, Cristy enjoys spending time with her husband, her dog Xena, boating, and going on bike rides.


Jamie O'Connell

Paramedic & Owner

Jamie O'Connell comes to Health Xpress Medical Center with 15 years of experience as a Paramedic. He is also an army Veteran, who worked for the 82nd Airborne infantry division as a paratrooper. During his time in the service, Jamie received a Purple Heart. Jamie understands the importance of quality care and is ready to help with your medical care needs. When not at work, Jamie enjoys boating, walking his dog Sarge, and working on his hot rod.


Cristina Kulback

Family Nurse Practitioner

Cristina is a board-certified Family Nurse Practitioner that specializes in Family Medicine. She is board certified by the American Nurses Credentialing Center (ANCC). Cristina has been in the healthcare field for over 9 years primarily working in Emergency Medicine and Trauma. Cristina also has extensive experience in other specialties such as Orthopedics, Intensive Care, Outpatient Rehabilitation, and Home Health. Cristina has also been a clinical instructor for nursing students for over 3 years. Cristina is dedicated to providing individualized care to all her patients. In her free time, she enjoys spending time with her son, traveling, and loves trying new restaurants!

 Sarah McMurtry.png

Sarah McMurtry

Family Nurse Practitioner

Spring Valley Clinic

Sarah is a certified Family Nurse Practitioner. She graduated from Touro University Nevada.  She is board certified by the American Academy of Nurse Practitioners. She brings to Health Xpress Medical Center over a decade of medical knowledge. Prior to becoming a Family Nurse Practitioner, she worked as a registered nurse in multiple emergency rooms as well as a level 1 trauma center.  Her passion for helping others is what drives her patient centered care.  In her free time, she enjoys spending time with her family, playing with her mini golden doodle, traveling, and cheering on the Vegas Golden Knights.

Family Nurse Practitioner

Nicole Cash

Family Nurse Practitioner

Nicole Cash is a Family Nurse Practitioner that truly has a passion for medicine. She graduated with a Master's Degree in Nursing from Graceland University in 2014. Nicole finished undergraduate school in 2002 and worked as a registered nurse in both Arizona and Nevada. She has a broad medical background including experience in labor and delivery, emergency, cardiology, trauma/critical care aeromedical transport. Nicole brings a strong work ethic and an unwavering dedication to her profession. She believes there is nothing more rewarding than
taking care of the people in her community.

Nicole is married with five children. She enjoys cooking, traveling, music and tries to get to as many VGK hockey games as possible.


Rhianna Perez

Family Nurse Practitioner

Health Xpress Medical Center welcomes, Rhianna Perez to our team of providers at our Henderson Clinic! Rhianna has been in the healthcare field for 14 years, primarily critical care. Rhianna works primarily Saturdays and is our Spanish-speaking provider on staff. When Rhianna is not working she enjoys spending time with her family. Being physically active is important to her and her family, so they try to do activities that keep them busy and burning calories!

Colton Schulz.png

Colton Schulz

Office Manager

Colton comes to Health Xpress Medical Center as our office manager with a wide range of experience in healthcare. Colton has been certified in EMS for 9 years, as well as an instructor in EMS. He has managed special events and worked on an ambulance in Las Vegas since 2016. Colton has experience in occupational health and safety and has been part of safety teams for large corporations. When he's not at work Colton enjoys spending time with his wife and two dogs and going on adventures with them!


Savannah Alley

Lead Medical Receptionist

Savannah joins the Health Xpress Medical Center Team as our lead Medical Receptionist. She was born and raised in Las Vegas and is currently attending school to become a registered nurse. After graduating from school, she would like to specialize in pediatric oncology. When Savannah is not working or going to school, she likes to travel and spend time with her family.


Kristin Miller

Medical Assistant

Kristin joins the Health Xpress Medical Center Team as a Certified Medical Assistant and Phlebotomist for the past 15+ years. She is also currently enrolled in school to become a Registered Nurse. Kristin has been in Henderson for the past 21 years. Kristin is passionate about working with patients of all ages making sure they get the best care. During her free time, Kristin loves to hike and spend time with her family.


Ryan McGraw

Lead Medical Assistant

Ryan is a recent medical assistant graduate who moved from Oregon to the Las Vegas Valley. He plans to further his education in the future.

When he's not working, you can find Ryan watching football with friends and family or cooking up a storm in the kitchen!


Aurora Rainwater

Medical Receptionist

Aurora joins Health Xpress Medical Center as a medical receptionist. Aurora enjoys helping others. She has experience in bedside patient care and working with children of all ages. Aurora is here to help with scheduling, billing, and anything else patients will need. When Aurora isn't working, she likes to read and tend to her plants.


Gabriel Robinson

Lab Technician

Gabriel joins Health Xpress Medical Center as our lab technician, as well as working at the front desk. Being in both the front and back office, he is able to help with any of your questions about billing, testing, appointments, and so on.  He has experience with patients and has a passion for helping others. He likes to use alternative medicine options for his everyday health. Gabriel currently attends UNLV for their nursing program. He is hoping that after he graduates he can study acupuncture. In his free time, he enjoys spending time with family, friends, and his two kittens.