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Internal Medicine

What is Internal Medicine?

Internal Medicine is the medical specialty which focuses on prevention and treatment of adult diseases. They are Doctors for Adults ®. These physicians are commonly referred to as internists or doctors of internal medicine. Internists are trained to handle their patient’s problems from the most common to the most complex. Their knowledge and expertise extends from treatment of the common cold to managing multiple chronic illnesses. They care for their patients for life! In addition, the internist is sometimes called the “doctor’s doctor”. They have earned this moniker because other physicians consult with them to help solve perplexing diagnostic problems.

To learn more about Family Physicians, visit the American Academy of Family Physicians website at:

American Academy of Family Physicians

To learn more about Internal Medicine visit American College of Physicians website:

American College of Physicians

Parents, please visit the Patient Resources section of our website for links to several other websites we think you might find helpful.

Patient Resources

Providers

Kimberly Benage, MD

Kimberly Benage, MD

Internal Medicine

Dr. Kimberly Benage earned her medical degree from Loyola University Chicago in 2003 and completed her Family Medicine residency at St. Anthony Hospital in Denver in 2006. She spent the first 17 years of her career at Clinica Family Health and Wellness, where she provided high-quality, cost-effective, and culturally competent care to patients of all ages.

Dr. Benage is passionate about caring for families across generations, with a special interest in pediatrics and supporting parents through the developmental stages of childhood. She is committed to delivering culturally appropriate care and is fluent in both English and Spanish, ensuring accessibility for diverse patient populations. In recognition of her dedication to quality care and teamwork, she was honored as AdventHealth Avista Physician of the Year in 2023.

Outside of medicine, Dr. Benage enjoys running, hiking, skiing, and spending time with her four children, supporting them in their sports and activities. She is also actively involved in philanthropy, volunteering with Crazy Love Africa, a charity supporting single mothers in Uganda.

Dr. Benage firmly believes that every individual deserves compassionate, evidence-based care tailored to their personal health goals.

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Tiffany Ancheril, MD

Tiffany Ancheril, MD

Internal Medicine

Dr. Tiffany Ancheril is a dedicated physician board-certified in Internal Medicine and Pediatrics. She earned her medical degree from UCLA and has been practicing medicine since 2002.

With a passion for providing comprehensive care to patients of all ages, Dr. Ancheril chose a combined specialty to treat individuals from birth through retirement, fostering long-term relationships that enhance patient care. She strongly believes that a trusted partnership with a primary care provider leads to better health outcomes and actively involves her patients in their healthcare decisions.

A California native who loves Colorado, she enjoys spending her free time traveling, exploring the outdoors, and making memories with her three children. Dr. Ancheril is also fluent in Spanish, which allows her to connect with a diverse patient population and provide more inclusive care.

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William Covell, M.D.

William Covell, M.D.

Internal Medicine

William Covell, M.D. was born and raised on the East Coast and graduated from George Mason University in Virginia with high distinction and honors. He received his medical degree from the Medical College of Virginia in Richmond, Virginia in 1996, and completed his residency in Internal Medicine in Pittsburgh, Pennsylvania. Dr. Covell has provided primary care as a board-certified Internist in the hospital and private practice setting for over 20 years.

Dr. Covell and his family have always had a desire to live in Colorado, and with their children getting older, he and his wife decided to make the move. Dr. Covell is excited to join RMPC and start building relationships with his patients. He strives to listen to each and every patient and truly hear what they are saying. Dr. Covell takes pride in never seeing a patient as just a patient – instead, viewing them as a whole person. Navigating the modern medical arena can be a difficult and frustrating task. Dr. Covell aims to make it a positive experience for every patient by working as a team.

In his free time, Dr. Covell enjoys hiking, biking, and rock climbing with his family. He likes to read a good book, listen to great music, and enjoy the company of a goofy dog or cat.

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Dora H. Hilty, MD

Dora H. Hilty, MD

Family Medicine

Dr. Dora H. Hilty earned her medical degree from the University of Texas Medical Branch in Galveston and has been practicing medicine since 1998. She is board-certified in Internal Medicine and Obesity Medicine, bringing decades of expertise to her patients.

Passionate about preventative health and wellness, Dr. Hilty emphasizes the importance of diet and exercise in maintaining long-term well-being. She specializes in managing complex patients, particularly seniors, while also enjoying the opportunity to help younger individuals extend their health span. For Dr. Hilty, patient care is both a science and a calling—an ever-evolving puzzle where she finds fulfillment in improving lives.

Dr. Hilty has practiced hospital medicine with Inpatient Services, PC, and Sound Physicians for 15 years. She later transitioned to InnovAge in Aurora, where she provided care for three years, followed by two years at Kaiser Outpatient Internal Medicine.

Outside of the office, Dr. Hilty enjoys staying active through hiking, biking, skiing, and working out at the gym. She also has a passion for travel and exploring new places. In her free time, she is learning how to crochet and loves to cook.

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Martha Ives, M.D.

Martha Ives, M.D.

Internal Medicine

Dr. Martha Ives brings over three decades of experience in patient care, with a unique background in both internal medicine and pediatrics. She earned her medical degree from the University of Utah and began practicing in 1993. For the past 25 years, she has served the Arvada community at Rocky Mountain Primary Care, including three years as president and CEO.

Dr. Ives has been nationally recognized by the NCQA for more than 10 years for excellence in cardiovascular, heart, stroke, and diabetes care. She has a special interest in solving complex internal medicine diagnostic cases while also finding joy in caring for her pediatric patients. A self-described physiologist at heart, she is continually inspired by the science of medicine and finds great reward in helping patients better understand their health.

Outside of the clinic, Dr. Ives enjoys life on her hobby farm, raising and showing collie dogs. She’s also an avid reader, passionate quilter, and gardener. After raising three children, she finds fulfillment in her many creative and outdoor pursuits.

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Jo Ann Rivera, M.D.

Jo Ann Rivera, M.D.

Internal Medicine

Dr. Jo Ann Rivera is a certified Internal Medicine physician with over 25 years of experience passionate about building lasting relationships with her patients. She earned her medical degree from the University of Santo Tomas in Manila, Philippines, and began practicing in 1998.

Dr. Rivera believes that primary care is a partnership. She is committed to providing compassionate, high-quality care where patients feel heard, respected, and empowered to become the healthiest versions of themselves.

Dr. Rivera practiced in Cincinnati for 25 years, including 17 years with the University of Cincinnati and 6 years at InnovAge.

Outside of the office, Dr. Rivera enjoys cooking and spending time with her children, singing in her church choir, attending concerts, and traveling.

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