What Should I Expect From My Primary Care Team At AMS Pueblo?

We believe primary care should be the first stop in your healthcare journey; it’s where you turn for guidance and support before you get sick, before you see a specialist, and before you need to seek hospital care. Our general practitioners combine excellent patient care with an efficient use of technology to deliver high-quality, affordable service that’s designed to fit your unique needs.

As your Adult Medicine Specialists primary care providers (PCPs), we take your well-being seriously. We address all your essential health needs by:

  • Making prevention and wellness a priority
  • Collaborating with you to customize the best plan that suits your individual needs and goals
  • Providing a comprehensive, accurate, and secure repository for all your medical information
  • Seamlessly coordinating your care, including tests, treatments, and specialist visits
  • Providing easy-to-understand, accessible advice, guidance, and insight
  • Offering cost-effective options that empower you to prioritize your health

From preventive medicine to integrative care, we have the tools to keep you feeling your best — whether you’re already in good health, suffering from a minor cold, or facing a life-changing illness. Our primary care providers are your partners in cultivating and maintaining long-term health.

Learn More about Nurse Practitioners: What is a Nurse Pracitioner?


Anthony Ortegon, MD

Dr. Ortegon attended the University of Miami School of Medicine achieving his MD degree in 1975 and subsequently completing an Internal Medicine Residency program at Misericordia-Lincoln Hospital in New York City in 1978. He settled in Pueblo Colorado in 1980 and has been in private practice at the same location. He has held the positions of Chief of Staff, Vice-Chief of Staff and Chief of Medicine at Parkview Hospital from 1985-1989 and served on their board until 1995.

Dr. Ortegon passed away unexpectedly at the end of 2021. He is dearly missed by his wife Vera of 45 years, his two sons, Anthony and Arthur, his two daughter-in-laws, Courtney and McKinsie, and his four grandchildren, Bennett, Olive, Isla and Briggs.


Anthony Ortegon IV, MD

Dr. Anthony Ortegon IV, is triple board certified in Pulmonary Care, Critical Care, and Internal Medicine. Growing up in Pueblo, Colorado, Dr. Ortegon received his B.A. Biology from Swarthmore University and his Doctor of Medicine from Temple University in Pennsylvania.  Dr. Ortegon then went on to complete his Internal Medicine and Pulmonary/Critical Care Residency in Dallas, Texas.

A voracious reader, wine enthusiast, and avid hockey fan, you can find Dr. Ortegon spending the majority of his leisure time with his wife Courtney and two children, Bennett and Olive. 

Sergio Murillo, MD

Born in Costa Rica, Dr. Sergio Murillo chose family medicine because of the wide spectrum that his specialty offers, particularly with the ability to help and educate patients through their individual health conditions. Dr. Murillo graduated from EscuelaAutonoma de CienciasMedicas de Centroamerica, and completed his residency locally in Pueblo, Colorado. 

Dr. Murillo is fluent in both English and Spanish. He has a comprehensive and holistic approach to how he practices medicine, as seen in his work as faculty and cultural competency preceptor for migrant workers. He maintains an excellent rapport with patients, staff, and the medical community. 

Dr. Murillo enjoys fishing, hiking, kayaking, opera, working with wood, and camping with his family. 

Daniel Vaught, NP

Daniel was born and raised in Pueblo. Previously, he was the Medical Programs Coordinator for the Colorado Springs Fire Department and provided community health for the City of Colorado Springs for nearly 20 years. He joined Adult Medicine Specialist after working for Centura SET Family Clinic in Colorado Springs. Daniel began his medical career as a Paramedic for Alert Ambulance in Pueblo in the early 90’s. He graduated from the University of Southern Colorado (now Colorado State University Pueblo) with a BSN; an MSN from the University of Phoenix graduated from the University of Colorado with an NP Board Certified in Family Practice. He has volunteered thousands of hours in ‘safety net clinics’ providing care to the poor, disadvantaged and uninsured. He has a particular interest in the treatment of diabetes, hypertension and cardiovascular disease…but all patients are welcome. In his free time, Dan enjoys spending time with his family and listening to music.

Peggi Ryan, NP

Peggi Ryan attended undergraduate school at the University of Iowa, Iowa City and graduate school at the University of Kansas City, Kansas City, Missouri in 1997. Peggi enjoys practicing adult primary care and has joined AMS after moving to Colorado. Peggi enrolled in college to be a special education teacher but during her undergraduate studies, she had a sudden change of heart and began to climb the proverbial Mt. Everest with the goal of earning a master’s degree in nursing. She conquered the mountain with a 4.0 grade average and soon discovered a hidden passion within to bring hope, healing, and restoration to the suffering world. Peggi’s passion has taken her around the world, using her years of medical experience for mission trips to places like Puttur, India and Jamaica. In addition to those exotic travels, Peggi spent time developing and cultivating relationships with patients and often times entire families proving that love is the most powerful of all medicines. Peggi has two adult children.

Barrett Allen, NP

Barrett Allen is a family Nurse Practitioner from Friendswood, Texas and is new to Pueblo and AMS.

In 2014, Barrett earned his Bachelor of Science in Nursing from the University of Mary Hardin-Baylor where he also played college football. In 2020, he earned his Master of Science in Nurse- Family Nurse Practitioner from Purdue University. While working on his masters, Barrett worked full time at HCA Houston- Clear Lake in the fast pace and challenging critical care unit. Barrett prides himself on being a leader and mentor for other nurses.

As a Registered Nurse, Barrett has extensive experience in cardiology, ranging from coronary care to cardiovascular intensive care. Barrett truly loves and is intrigued by the heart.

In his free time, Barrett enjoys spending time with his spouse, daughter, family, and friends. His hobbies include hiking, seeking adventure, and powerlifting (of which he has set several national records by squatting 700lbs, bench pressing 500lbs, and deadlifting 765lbs). Barrett believes his work ethic, commitment, and discipline enhances his role as a family nurse practitioner.

Barrett has a strong passion for nursing, which drives him to provide the best possible care for his patients.


Adult Medicine Specialists
314 West 16th St.
Corner of 16th and Grand


Adult Medicine Specialists
1225 North Grand Ave.
Corner of 13th and Grand