Internal Medicine

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Meet Our Team

Kathleen Colleran, MD
Dr. Colleran has more than 20 years of experience in Internal Medicine and Endocrinology in New Mexico. She completed a Fellowship in Endocrinology and Metabolism, as well as a Research Fellowship in Endocrinology and Metabolism, at the University of New Mexico.


Chaojie Chen, MD
Dr. Chen received her undergraduate degree at Kent State University and went on to receive her Medical Doctorate at Northeastern Ohio Medical University in Rootstown, Ohio. She completed her residency in Internal Medicine at Akron General Medical Center where she continued practicing primary care for several years prior to moving to New Mexico. Dr. Chen specializes in preventative care and management of chronic diseases like hypertension and diabetes. She has performed lots of procedures like shave biopsies, cryotherapy, and joint injections. 


Michael Ting, MD
Dr. Ting attended the University of California at Berkeley where he received a Bachelor of Science in Mechanical Engineering. He worked as a mechanical engineer before going to medical school at Texas Tech University Health Science Center’s Paul L. Foster School of Medicine in El Paso. Dr. Ting went on to complete his Internal Medicine internship and residency at the University of Nevada at Reno. He is a member of the American College of Physicians.

Ryan Bozzell, CNP
Mr. Bozzell received his Master's Certificate as a Family Nurse Practitioner from Grand Canyon University in 2018. He also holds undergraduate degrees in Business Finance, Business Accounting, and Nursing from New Mexico State University in Las Cruces. After receiving his nursing degree, he went to work at Memorial Medical Center in Las Cruces where he gained experience in Multiple areas of patient care including Medical, Surgical, Orthopedics, Oncology, and the Emergency Department.


Nancy Brooker, MS, CNP 
Ms. Brooker holds a Bachelor of Science in Nursing from the University of Phoenix and a Master of Science as an Adult Nurse Practitioner from Arizona State University in Tempe. She has extensive experience in primary, preventative and acute care for adults, with a strong focus on caring for geriatric patients and their families.

Shawna Frost, CNP
Ms. Frost attended San Juan College and graduated with her associate’s degree in nursing. She received her bachelor’s degree in Nursing from Kaplan University in Chicago, Illinois in 2009 and her Master of Science in Nursing/Family Nurse Practitioner degree from Graceland University in Independence, Missouri in 2011. 

​Ms. Frost has an extensive history of caring for patients in our area. She spent more than eight years as an Emergency Medicine nurse and Family Nurse Practitioner at San Juan Regional Medical Center, and most recently cared for patients at Southwest Memorial Hospital’s Primary Care Clinic in Cortez, Colorado. 


Michelle L. Russo, BSN, RN
Nurse Navigator, Health Coach

Ms. Russo began her career in the healthcare field in the United States Air Force as an EMT in 1989. She became a Registered Nurse in 1998 after graduating with her bachelor’s in Nursing from the University of New Mexico. She has spent most of her nursing career in the emergency room and became a Nurse Navigator in 2017. Ms. Russo holds a certificate in Health Coaching and Motivational Interviewing from the Iowa Chronic Care Consortium.


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