Family Medicine

About Family Medicine

Family Medicine TeamFamily medicine is a primary care specialty that offers comprehensive healthcare for patients of all ages and genders. Family medicine providers deliver care to both individuals and families and can serve as your primary provider of healthcare in all non-emergency situations.

At UNM Sandoval Regional Medical Center, our Family Medicine Providers are committed to being a partner in your health by offering expert guidance and support in wellness and lifestyle choices, providing assistance in setting and maintaining health goals, and working collaboratively to prevent disease and disability.

To ensure a lifetime of good health for you and your family, our Family Medicine providers will:

  • Attend to your basic healthcare needs, including the diagnosis and treatment of common medical conditions
  • Offer preventive care through regular checkups and screenings
  • Promote healthy lifestyles through patient education
  • Provide referrals to medical specialists based on the urgency or complexity of a medical condition

Making an Appointment

Our Family Practice Clinics offer appointments all day on Monday-Friday, with some evening appointments available. To schedule an appointment, please call 505.994.7397.

For your appointment: Please remember to bring any relevant medical records and a current list of all medications. If you are a new patient, you can download and fill out the New Patient History Form before your first appointment.

Meet Your Family Medicine Team

Alison Marshall, CFNP

Alison Marshall, CFNP

Alison received both her undergraduate and graduate degrees from UNM College of Nursing, and is nationally certified through the American Nurses Credentialing Center. Prior to completing her training as a Family Nurse Practitioner, Alison worked in a variety of nursing settings, including the UNMH Neuroscience Intensive Care Unit and home hospice/palliative care.

As a New Mexico native, Alison is passionate about serving her community and is honored to work at UNM SRMC. “I hope to address the physical and psychological needs of my patients holistically, using a variety of modalities that include non-pharmacological therapies,” said Alison. She enjoys seeing patients of all ages - including children - and looks forward to working with a diverse patient population.

Outside of work, you can find Alison hiking, running and swimming with her family and friends.

Aaron Skiles, CFNP

Aaron Skiles, CFNP

Receiving his bachelor's and master's degrees from UNM, Aaron grew up in Sandoval County and it has always been his long term goal to become a nurse practitioner to provide for the medical needs of the residents of Sandoval County. Aaron has a special interest in treating patients with chronic Hepatitis C, using the exciting new medications that are available to cure this serious disease. He works in association with the University of New Mexico’s Project ECHO in both the Hepatitis C and HIV programs to provide the most current evidence-based therapies delivered at SRMC, which helps bring specialty care to patients in their home community. Aaron is also excited to offer patients PrEP for prevention of HIV infection.

"I am very committed to the physical and emotional wellbeing of the people of New Mexico and I see it as a privilege to have the opportunity to serve my patients by working at SRMC." He is Nationally Certified from the American Academy of Nurse Practitioners and is proud to be a part of SRMC's mission to improve the health of the surrounding communities.


Anthony Fleg, MD

Dr. Anthony Fleg is excited to join the Department of Family & Community Medicine at the UNM School of Medicine, returning to the same place he received his own residency training. In addition to his teaching responsibilities at UNM, Dr. Fleg also works in the Outpatient Family Medicine Clinic at UNM Sandoval Regional Medical Center, where he is eager to promote and strengthen the facility’s academic mission.

His appreciation for the sacred space that healers and patients share is the foundation for his desire to work as a healer, and he strives to serve patients with loving, empowering and dignified care. His clinical areas of interest include helping patients with chronic pain, integrative medicine and helping empower people to take greater steps toward healthy lifestyles.

Dr. Fleg is also very involved in community health efforts, mostly with Indigenous populations. He helps coordinate a love-funded partnership called the Native Health Initiative (NHI) and hopes to develop increased collaboration between NHI and UNM in the coming months and years. In his community work at UNM, he seeks to invest energy toward youth empowerment programs and supporting Indigenous youth interested in health careers.

Kevin Henry, MD

Kevin Henry, MD

Dr. Henry is a graduate of UNM's School of Medicine and is Board Certified in Family Medicine. "I want to continue to increase my knowledge base and work with the underserved population in Sandoval County," said Dr. Henry. "I enjoy working with all ages and backgrounds and I am excited to help promote health and wellness in New Mexico." During his free time, Dr. Henry goes out into the local landscape for hikes, bike rides and other outdoor activities where he can soak in the culture and all that New Mexico has to offer. "I appreciate the opportunity to work at a new facility that truly cares about its' patients, their families and their wellbeing."

Celia Valdez, MD

Celia Valdez, MD

When Dr. Valdez isn't skiing or biking with her family, she is doing what she loves - taking care of patients. Dr. Valdez received her bachelor's and Medical School degrees from UNM, is Board Certified in Family Medicine and has lived and practiced on the Westside for 22 years. "Being a part of SRMC and serving my community members is a privilege and a blessing," said Dr. Valdez. "I am looking forward to helping improve the health of Westside residents, one patient at a time."

Medical Director

Shane Cass, DO Medical Director

In addition to serving the community as a Board Certified primary care physician at SRMC, Dr. Cass is a team physician for the UNM Lobos, specializing in non-operative, primary care sports medicine. He is married with three children and said, "Practicing at SRMC represents the best of the community and university models of healthcare." He is excited to work in both worlds and continued to say, "The university model represents the highest level of care, specialization and training of physicians while the community model represents the patient-centered and friendly side of healthcare."

Paul Afek, MD

Paul Afek, MD

Paul Afek, MD is an Assistant Professor of Family and Community Medicine at the UNM School of Medicine. He received his medical degree from the University of Vermont College of Medicine, and completed his Family Medicine residence at Forbes Family Medicine in Pennsylvania. He worked for 13 years at a rural Community Health Center near Tucson, Arizona as part of the National Health Service Corps, and was a volunteer clinical faculty member at the University of Arizona. He then worked for 5 years at a hospital-owned outpatient office prior to moving to Albuquerque. Dr. Afek is working primarily at UNM SRMC and is precepting residents at the Indian Health Service clinic on the main campus. Prior to his career in medicine, Dr. Afek was a tractor mechanic on a kibbutz in Israel, and a medic in the Israel Defense Force. He enjoys outdoor activities with his wife, and playing with his grandchildren, as well as fitness and amateur natural bodybuilding.