Meet Our Team


Wendy Markovich, FNP

Arizona | Colorado | Idaho | New Mexico

Wendy has been in practice for over 15 years working in pain management in Arizona. She grew up in Nebraska and completed her undergraduate studies at Creighton University in Omaha. She then moved to Connecticut to complete her Masters degree. After graduation, Wendy worked as a Nurse Practitioner in Connecticut for a few years before she moved to Arizona. In Arizona, she learned it was one of the only states at that time to allow independent practice for Nurse Practitioners. She decided to open her own pain management practice and was successful over 10 years treating patients with chronic painful diagnoses and managing long term medications. After having her first child in 2016 Wendy transitioned into telemedicine which gives her the flexibility to work and also spend time at home with her family.

Ashley Ross, FNP

Arizona | Colorado

Ashley is a Family Nurse Practitioner who loves building relationships with her patients and devoting herself to their overall health and wellbeing.  Ashley knew she wanted to be a nurse from a very young age and went straight into nursing school out of highschool. She completed her undergraduate degree in Washington at Gonzaga University and then returned home to Arizona to be with her family. She was a nurse for 9 years before taking on her newest role as a nurse practitioner after completing her master’s degree from Grand Canyon University.  Ashley worked primarily in oncology as a nurse, treating chronic pain as a result of tumors, surgery, chemotherapy side effects, and intense radiation treatment for her patients overcoming cancer. She always puts her patients first, allowing them to be a part of every aspect of their care from beginning to end. She is tenacious and compassionate about treating her patients’ pain and improving their quality of life. Ashley also works with substance use disorder patients which has helped to better understand how patients treated for chronic pain have been mistreated or neglected after the opiate epidemic.  Ashley has been working remotely from her office at work but looks forward to the convenience of telemedicine provided to patients at home.

Kairul Lahardi, FNP

Idaho | Washington

Kai Lehardi is a Nurse Practitioner who believes there is more to practicing medicine than prescribing medications. He has worked full time as Family Nurse Practitioner specialized in internal medicine for two years and Intensive Care Unit Registered Nurse for seven years. He completed his Family Nurse Practitioner Master degree at South University and Undergraduate in Nursing at University of South Florida.  His greatest satisfaction comes from changing and improving the lives of his patients. With his easygoing personality, he is able to help patients feel calm in stressful situations. His motto at work is to do things "safely and correctly the first time and every time, even if it means spending more time to ensure safe and accurate patient outcomes." He believes that creating memorable relationships with his patients contributes to the high quality. He aims to continue empowering his patients to set reachable goals and achieve their ideal quality of life.

Jenifer Deziel, APNP

New Mexico | South Dakota (Pending)

I was born and raised in northern Wisconsin, graduating from high school in 1979, and from an associate degree nursing program in 1985. In Wisconsin, I worked for many years as an RN, particularly in emergency rooms, but also in many other various clinical settings. I married and raised five children in Wisconsin and Minnesota. After divorcing, and with all of my children doing well, I returned to college, and attended graduate school at The University of North Dakota in Grand Forks, graduating as a family nurse practitioner in the spring of 2012. I worked until 2020 as a hospitalist in critical access hospitals in South Dakota, Wisconsin and Iowa.

Along with Kevin, my partner, who suffers from a progressive neurological disorder, I relocated to New Mexico in 2020. I look forward to this new career opportunity working with others suffering from both acute and chronic issues, while also being able to spend more time at home with my significant other. I enjoy spending time with my five adult children, who currently reside in five different states, as well as my three grandchildren, who I don't get to spoil nearly as often as I'd like! 

Dean Wentworth, MSN FNP-BC

Oregon | Washington

Dean is a Family Nurse Practitioner, board certified nationally.  He is a Veteran of the United States Navy/United States Marine Corps and began his medical career as a Navy Hospital Corpsman and Marine Corps Fleet Marine Force Combat Trained Corpsman.  Following his military service, Dean worked as a licensed nurse in both the E.R. and Medical Surgery Ward with the VA Hospital in Portland, Oregon then moved up the ranks to RN in a family Practice Clinic and on to Emergency Medicine, Cardiopulmonary Surgical Critical Care Unit/ICU.  As a Family Nurse Practitioner, Dean has continued his service to our military men and women by assisting in the management of large-scale healthcare programs that ensure physical and mental readiness for duty as well as full separation examinations upon returning from deployment to ensure that all the mental and physical needs of the Veterans are being addressed.

Dean completed his Masters in Nursing - Family Nurse Practitioner and his Bachelor's Degree in Nursing at Washington State University, Vancouver Campus.  Dean began his practice as a Family Nurse Practitioner in Pain Management in 2008. He gained experience working with multiple Anesthesiologists and Physiatrists developing his overall pain management skills, including Injection Therapy, Interventional Pain Management and medication management of acute and chronic conditions. Dean values a holistic and interventional approach to patient care, with an emphasis on the psychosocial and multi-cultural needs of the patient and the family.  Based on his own experience with injury and pain while in the military, Dean empathizes with his patients and strives to individualize each pain care plan by having the patient participate in the development of the plan to ensure the best outcomes and optimize each patient’s mental health, sleeping pattern and daily physical routines.

Support Staff

Celina Tellez

Lead Medical Assistant

Hello! My name is Celina. I was born and raised in Mesa, AZ. I have one son who is such a joy in my life. Outside of work I like to spend most of my time with my family and friends. I love to travel and love to attend any concert I can. I have been a medical assistant since 2011 and have been working side by side with Wendy since December of 2012. I have worked in a couple other offices throughout the years, but have been in pain management for the majority of my career. Our patients here are like our second family. I love being apart of OnCall Pain and I love what I do.

Sarah Cerica

Medical Assistant

Sarah is a passionate, highly motivated & dependable registered pharmacist, and a certified healthcare virtual assistant who always dedicates 110% percent effort to deliver excellent outputs. She was born and raised in the Philippines & studied BS Pharmacy at the Pontifical and Royal University of Santo Tomas in Manila. Having worked both in a community & hospital pharmacy setting since 2015, Sarah has mastered the art of communicating & building rapport to clients, patients, & healthcare providers with professionalism. She makes sure to provide the service needed by every person she serves with kindness and solicitude. She treats patients as a second family and not just strangers.

Notice of Privacy Practices | Privacy Notice | Terms of Use

© 2018-2020 by OnCall Pain, LLC