Family Medicine Residency Faculty

HonorHealth Scottsdale Osborn Medical Center - Family Medicine Residency Program 2018-2019

The Family Medicine Residency Program boasts a large and varied faculty, including more than 100 HonorHealth volunteer medical staff physicians. Core residency faculty members are listed below.

(Please note: The residency program was formerly known as the Scottsdale Healthcare Family Medicine Residency.)


Cynthia L. Kegowicz, MD

Cynthia L. Kegowicz, MD

Program Director
Dr. Kegowicz attended Georgetown University where she received a Bachelor of Science degree in nursing and attended Georgetown University School of Medicine.

She completed her family medicine residency at HonorHealth, followed by a Faculty Development Fellowship at the University of Arizona. Dr. Kegowicz joined the faculty in 1999. She is an assistant professor of clinical family and community medicine at the University of Arizona College of Medicine and is an adjunct assistant professor for Midwestern University Arizona College of Osteopathic Medicine.

Dr. Kegowicz was chosen as the Arizona nominee for the American Academy of Family Physicians Exemplary Teaching Award in 2009. Her passion for resident education and high-quality residency training made her transition to Program Director in 2011 an easy one. She is thrilled to be leading our outstanding program into the future in ever-changing healthcare and educational environments.

Dr. Kegowicz’s clinical interests include OB and women’s health, adolescent medicine and pediatrics. Her husband, Alex Onofrei, MD, is also a graduate of the HonorHealth Family Medicine Residency Program. They are the proud parents of Megan, their teenage daughter. Dr. Kegowicz’s hobbies include cooking, gardening, shopping and travel.

Dmitry Bisk, MD

Dmitry Bisk, MD

Associate Director
Dr. Bisk is a board certified family physician who grew up in Walnut Creek, CA. He completed his undergraduate degree at California Polytechnic State University and received his medical degree from Ross University School of Medicine. After medical school, he moved to Arizona and completed his residency training with HonorHealth. During his time as a resident, he was elected Resident Association President. In his final year of training, he served as Chief Resident and was awarded Resident Teacher of the Year.

Following residency, Dr. Bisk joined the HonorHealth medical group where he practiced comprehensive outpatient medicine and worked on a population health project with skilled nursing facilities. During his employment with the HonorHealth Medical Group, he completed a Faculty Development Fellowship through the University of Arizona.

Dr. Bisk transitioned into a full-time Associate Director role in 2017. His clinical interests include preventative care, chronic disease management, population health, and evidence-based clinical medicine.

Dr. Bisk is married and recently welcomed daughter, Matilda!! He loves to spend time with his family and their multiple pets. He enjoys traveling, trying new restaurants, drinking coffee, and rooting for his hometown basketball team, the Golden State Warriors.

Andrea Darby-Stewart, MD

Andrea Darby-Stewart, MD

Associate Director
Dr. Darby-Stewart completed her medical education at UCLA and her Family Medicine Residency training at Mayo Clinic Arizona. She has extensive experience in graduate medical education; having served several years as residency faculty and subsequently as a Family Medicine Program Director at both Mayo Clinic Arizona and Dignity Health in Phoenix, AZ. Dr. Darby-Stewart was previously an Associate Director for the Family Medicine Residency program at HonorHealth prior to her transition into the Program Director position at Dignity Health. During Dr. Darby-Stewart’s tenure with HonorHealth’s Family Medicine Residency program from 2009-2011, she was instrumental in several curricular advancements and educational initiatives, and was nominated as Teacher of the Year by graduating residents.

In addition to her extensive graduate medical education experience, Dr. Darby-Stewart brings several otherskills to her Associate Director position including population health management, scholarly activity, a regional/national presence with several healthcare organizations, and a true passion for medical education and excellence in patient care.

Charlotte Gurule, MD

Charlotte Gurule, MD

Associate Director
Dr. Charlotte Gurule attended Adams State University in Alamosa, Colorado where she received a Bachelor of Science in Biology and Chemistry. She attended the University of Colorado School Of Medicine, then moved to Arizona and completed her Family Medicine residency training at Banner University Medical Center (formerly Banner Good Samaritan). She served as chief resident during her final year. Following residency, Dr. Gurule completed a Faculty Development Fellowship at the University of Arizona and joined the faculty at Banner Good Samaritan Family Medicine Residency where she served as a clinician educator until 2008 when she became the Practice Medical Director. During her time at Banner, Dr. Gurule served on multiple hospital committees and completed Banner’s Advanced Leadership Course in 2014. She has been recognized for her excellence in teaching numerous times; receiving the Robert A. Price Award – Banner Family Medicine Residency Program in 2004, 2009 and 2015.

In 2015, Dr. Gurule joined Iora Primary Care as the Practice Medical Director and was responsible for leading an integrated primary care model serving a large population of Medicare patients. During her time at Iora Primary care, Dr. Gurule was dedicated to ensuring high quality medical care and exceptional patient experiences utilizing a team based care model.

In August 2018, Dr. Gurule joined the HonorHealth Family Medicine Residency Program as an Associate Director. She is excited to once again be teaching medical students and Family Medicine resident physicians while serving the community. Dr. Gurule also currently serves as an Assistant Professor of Clinical Family and Community Medicine at the University Of Arizona College Of Medicine.

Dr. Gurule’s academic interests include patient experience, team based care, practice management, and population health. She is married to another Family Physician and keep busy with their 3 fabulous children, 2 loveable dogs, and a lively cat.

Darlene Moyer, MD

Darlene Moyer, MD

Associate Director
Dr. Darlene Moyer graduated from Lycoming College with a Bachelor of Science degree in biology and attended George Washington University School of Medicine.

She completed her family medicine residency at HonorHealth in 2008 where she served as chief resident and won multiple clinical and academic awards as a resident physician.

Dr. Moyer completed a faculty development fellowship at the University of Arizona and has published some of her scholarly work in the Journal of Family Practice, Eldercare, and the Arizona Geriatric Society Journal. She also has presented her work nationally.

Following residency, she spent three years working as a hospitalist at HonorHealth while also teaching for the Family Medicine Residency program in both the inpatient and outpatient settings. Dr. Moyer became a full-time Associate Director in 2011 and subsequently completed the Society of Teachers of Family Medicine Emerging Leaders Fellowship.

Her clinical interests include hospital-based medicine, geriatrics, chronic disease management and medical simulation training. She actively participates in the HonorHealth Scottsdale Osborn Medical Center Ethics Committee and other HonorHealth committees. She also serves on the board of directors of the Arizona Academy of Family Physicians.

In her free time Dr. Moyer enjoys spending time with her husband, Brian, her daughters, Sophia and Zoe, her family and friends. Her hobbies include hiking, traveling, reading, scuba diving and spending time outdoors.

Richard Rutkowski, MD

Richard Rutkowski, MD

Associate Director
Dr. Rutkowski rejoined the faculty of HonorHealth Family Medicine Residency in 2013. A native of Illinois, he graduated with honors from the College ofthe University of Chicago, received his MD degree from the University of Chicago Pritzker School of Medicine, and completed a family medicine residency at Hinsdale Hospital in Illinois, where he served as chief resident.

Dr. Rutkowski practiced in the Chicago suburbs and also was involved in resident education before moving to Arizona in 2001. He provided direct patient care and taught medical students and resident physicians at HonorHealth from 2001 to 2009.

For the next four years, Dr. Rutkowski was a senior associate consultant in the department of family medicine at Mayo Clinic Arizona and an instructor in the Mayo Medical School. He is a clinical assistant professor of family, community and preventive medicine at the University of Arizona College of Medicine in Phoenix and is board-certified by the American Board of Family Medicine.

In June, 2013, Dr. Rutkowski returned to HonorHealth. His medical interests include preventive medicine, office procedures, and patient education. He is married and has two children.

Alethea Turner, DO

Alethea Turner, DO

Associate Director
Dr. Alethea Turner is a Board Certified Family Physician who was raised in Arizona. She graduated from the University of Arizona earning a Bachelor of Science in Physiology and minors in Chemistry and Journalism. Dr. Turner completed her family medicine residency at HonorHealth in 2012, where she served as chief resident and won multiple awards.

After completing residency, Dr. Turner worked in a group practice where she provided a widespectrum of care to her patients. In 2017 she returned to HonorHealth as an Associate Director of the Family Medicine Residency program.

Her clinical interests include preventive and adolescent medicine, dermatology, and women’s health. Dr. Turner also has an enthusiasm for medical journalism and the promotion of evidence-based medicine.

Dr. Turner is married and has one daughter. She enjoys travel, music, dance, and design. Outside of work, she is happiest spending time with her family and friends.

Javier Zayas-Bazan, MD

Javier Zayas-Bazan, MD

Associate Director
Dr. Zayas-Bazan attended the University of Nevada, Las Vegas, where he received a Bachelor of Science degree in biology. He attended the University Of Nevada School Of Medicine, then moved to Arizona and completed his family medicine residency training at HonorHealth, serving as chief resident during his final year. He earned multiple clinical accolades during this time and has since completed a Faculty Development Fellowship through the University of Arizona.

Since completing his training, Dr. Zayas-Bazan has worked in Tennessee, helping to stabilize a struggling hospitalist program before moving back to Arizona at the completion of his wife’s fellowship training. He continued his work as a hospitalist upon his return and began teaching family medicine residents on the inpatient teaching service before transitioning to a full-time Associate Director position.

Dr. Zayas-Bazan’s clinical and academic interests include inpatient medicine, underserved patients, obstetrics and resident didactics. He enjoys cooking, spending time with his wife, Kristina, a pediatric sports medicine specialist, and their two daughters, Lilliana and Gabriella. He’s also a huge football fan.

Wendy Danto Ellis, D.H.Ed., MC, LPC

Wendy Danto Ellis, D.H.Ed., MC, LPC

Behavioral Science Director, Family Medicine Residency
Dr. Ellis is a graduate of the University of Massachusetts (bachelor’s degree in psychology), Arizona State University (Master’s degree in counseling) and A.T. Still University School of Health Management (Doctorate in health education).

A licensed professional counselor, she is a clinical instructor of family and community medicine at the University of Arizona College Of Medicine. She serves as the behavioral health director for our Family Medicine Residency and Network Director of Provider and Caregiver Wellness.

Dr. Ellis provides program leadership for integrated behavioral health services and serves as a clinician on the behavioral health team. She is also an active member of the HonorHealth Scottsdale Osborn Medical Center’s Bioethics Committee.

Dr. Ellis’ clinical and academic interests include collaborative and relationship- centered care, enhancing coping and adjustment to chronic and critical illness, change management, and the impact of the electronic health record on the doctor-patient relationship. She is co-author of the book Relationships Are Everything.

In her free time, she enjoys movies, reading, photography, writing, cooking, traveling and spending time with friends and family. She is especially enjoys her role as grandmother to three grandchildren.

Additional Faculty

  • Rahul Athalye, MD (family medicine, inpatient).
  • Rakesh Bagai, MD (oncology hematology, inpatient).
  • Jeffrey Baird, MD (family medicine, inpatient).
  • Marvin Moe Bell, MD (family medicine, inpatient).
  • Pradeep Bhat, MD (cardiology, inpatient).
  • David Cho, MD (oncology hematology, inpatient).
  • Rajinder Grover, MD (oncology hematology, inpatient).
  • Robert Marlow, MD (family medicine, inpatient and outpatient).
  • Roberta Matern, MD (family medicine, maternity care, inpatient and outpatient).
  • Mark Mederios, MD (family medicine, outpatient).
  • Dan Quan, DO (emergency medicine/toxicology, inpatient).
  • Joseph Summers, MD (family medicine, outpatient).
  • Alan Tenaglia, MD (cardiology, inpatient).
  • Sandra Till, DO (pulmonology, inpatient).

OB/GYN Faculty

(All are boarded in obstetrics and gynecology).

  • Christine McClusky, DO
  • Afshin Malaki, MD
  • Deborah Rowan, MD
  • Brittany Stam, MD
  • Khai-Ling Tan, MD

In addition, more than 120 community physicians (primary care and specialists) participate as voluntary residency preceptors for our program.

Program Coordinators

HonorHealth Family Medicine Residency Program Coordinator Alicia Brandon

Alicia Brandon
Program Coordinator
7301 E. Second St., Suite 210
Scottsdale, AZ 85251-5672
Fax 480-882-6801
Email Us

HonorHealth Family Medicine Residency Assistant Program Coordinator Debra Peaser

Debi Peaser
Assistant Program Coordinator
7301 E. Second St., Suite 210
Scottsdale, AZ 85251-5672
Email Us