MVP Team!

                 Joseph Wells, M.D.                                                      Harry Broome, M.D.                                                           Fred Shulski, M.D.                                                          Mark Patton, M.D.

Dr. Joseph Wells joined MVP Kids Care in 1986. He graduated from the University of Notre Dame and the Medical College of Ohio at Toledo, where he also completed his internship in pediatrics. He finished his residency and chief residency at Sinai Hospital in Baltimore, Maryland. He has a special interest in children’s injuries and has published reports on Wii Heely, escalator, and mixed martial arts trauma in the American Journal of Diseases of Children, Pediatrics, Clinical Pediatrics, and the Journal of Trauma. He and his wife, gynecologist Dr. Valeria Sorkin-Wells, have 3 children. Dr. Wells is Board Certified in Pediatrics and has been a Fellow of the American Academy of Pediatrics since 1987. He is a Clinical Assistant Professor of Pediatrics at the University of Arizona College of Medicine.


Interests: Dr. Wells enjoys competitive running, current events, and the Fighting Irish.

Dr. Harry Broome is originally from Atlanta and joined MVP Kids Care over 20 years ago. He attended Davidson College majoring in Religion and went to medical school at the University of North Carolina at Chapel Hill. He completed his pediatric residency at Phoenix Children’s in 1996. Dr. Broome is Board Certified in Pediatrics, and is a Fellow of the American Academy of Pediatrics. He occasionally works at the Phoenix Children’s Hospital Urgent Care Center. Dr. Broome loves his vocation of taking care of pediatric patients and their families and would continue practicing pediatrics even if he won the lottery. Dr. Broome is married to his best friend and they have three children.


Interests: Dr. Broome is interested in sports medicine and volunteers as a team doctor on the sidelines of a few high schools in the valley. He enjoys playing and coaching tennis, soccer, and ultimate frisbee, and reading history books.

Dr. Fred Shulski grew up as an Army Dependent, and was lucky enough to live in California, Kansas, Missouri, Texas, North Carolina, Alaska, and Germany. He has been with MVP Kids Care for more than 15 years. He attended Appalachian State University in Boone, North Carolina where he majored in Biology and minored in Chemistry. Dr Shulski attended Medical School at East Carolina University in Greenville, North Carolina before moving to Phoenix in 1998. He completed his Pediatric Residency at St. Joseph’s Hospital. Dr. Shulski is Board Certified in Pediatrics and a Fellow of the American Academy of Pediatrics. He is married to his college sweetheart and has 3 beautiful children.


Interests: Dr Shulski enjoys his time with his family, playing racquetball, fishing, BBQing, and all things pirate. ARRGGHH!

Dr. Mark Patton joined MVP Kids Care over 20 years ago. Dr. Patton attended medical school at the University of Utah. He completed his residency training at Phoenix Children’s Hospital. He is Board Certified in Pediatrics and a Fellow of the American Academy of Pediatrics. He is married and has 6 children.

Jennifer Holmgren, D.O.                                                                                                                                             


Dr. Jennifer Holmgren is a native of Phoenix, Arizona. She graduated from the University of Arizona and then received her DO from Midwestern University-Arizona College of Ostepathic Medicine. She began her pediatric residency at St. Joseph’s Hospital and Medical Center and completed her training at Phoenix Children’s Hospital. Dr. Holmgren is married to her high school sweetheart and they have two children.



Dr Holmgren’s free time is spent with her family; camping, hiking, reading, and enjoying all things chocolate.

Chris Cwik, M.D.                                                                                                                                                                                                         Wendi Carlton, M.D.


Dr. Chris Cwik was born and raised in the Chicago suburbs and has more than 15 years in pediatric medicine. He is a graduate of Knox College in Galesburg, IL, with a Bachelor of Arts in Chemistry and College Honors in Biology. Dr. Cwik received his MD from the Univerisy of Tennessee Memphis. Dr. Cwik honed his skills as a resident at the Phoenix Children’s Hospital, Maricopa Medical Center, and as a lab assistant at St. Jude’s Cancer Research Hospital before continuing his fellowship training in Hematology/Oncology at the Fred Hutchinson Cancer Research Center. He is a past-Chapter President of the American Student Medical Association.



Dr. Cwik enjoys spending his time cooking, gardening, skiing, playing tennis, or coaching his sons’ baseball team. Dr. Cwik most values spenidng time with his family, including wife and coworker Dr. Yvonne Grassl.

Dr. Wendi Carlton, MD is a practicing Pediatrician in Phoenix, AZ.

Dr. Carlton graduated from University of North Carolina at Chapel Hill School of Medicine in 1994 and has been in practice for 25 years.

Brent Bjornsen  M.D.                                                                                                                                                                        Mark Greenberg M.D.

Brent Bjornsen 003_email

Dr. Brent Bjornsen grew up in the Hudson Valley in New York. His love for sports began there and brought him to Gordon College where he attained an undergraduate degree in Communication Arts with a focus in Print Media.


While the goal was to pursue a career in sports journalism, life often reveals new and exciting challenges when they are least expected. He and his wife, Nisse, moved to Kansas where they lived for six years and he completed his medical degree at the University of Kansas School of Medicine.


In 2014, they, and their two new children, moved to Phoenix where they eagerly welcomed cactus’ and copious sunshine. Dr. Bjornsen completed his pediatric training at Phoenix Children’s Hospital/Maricopa Medical Center Pediatric Residency Program. There, he learned to appreciate every aspect of pediatric care. However, he also developed a particular interest in pediatric sports medicine.


Thus, in 2017, the Bjornsen family again moved, this time to Houston. There, Dr. Bjornsen completed a fellowship in Pediatric Sports Medicine at the Texas Children’s Hospital/Baylor College of Medicine Primary Care Sports Medicine Fellowship. During his time in Houston, he cared for a wide range of populations, including young recreational athletes all the way to Division 1 collegiate athletes.


Perhaps spurred by a way too close experience with Hurricane Harvey, the Bjornsens decided to come back to the Valley in 2018 where he has practiced both general pediatrics and pediatric sports medicine. Dr. Bjornsen is excited to join the MVP Kids Care team and serve the community that has welcomed and fostered his family.


Dr. Bjornsen lives with his wife (Nisse), daughter (Kysse, 8), and son (Kyrre, 6), and their dog Addison.


Dr. Greenberg has been practicing pediatrics for over 30 years, in St. Louis, suburban Chicago, and the Valley of the Sun. He attended Northwestern University, did his internship at Rush-Presbyterian-St. Luke’s Medical Center in Chicago, and his residency was at the Children’s Hospital of Wisconsin in Milwaukee. A native Midwesterner, he has learned to love the desert, though his real passion is taking care of children. He strongly believes that the best medical care involves the patient and his or her family taking an active role in health care decision-making, in consultation with their provider. He enjoys his wife’s cooking, sports, running, history, and travel. He and wife Jan have two adult daughters, living in Los Angeles and London, and are awaiting their first grandchild some day.

James Stangle, F.N.P.-C                                                                                                                      

Jim Stangle


  • University of Arizona, Tucson, Arizona
  • Grand Canyon University, Phoenix, Arizona

Personal Interests

  • Mountain Biking
  • Scuba
  • Photography

Kristen Buchanan, P.A.                                                                                                                     Michele Howland, P.A.


Kristen Buchanan, Physician Assistant, graduated Mount Vernon Nazarene University in Ohio with a Bachelors in Psychology. Kristen completed her Master of Medical Science in Physician Assistant Studies from AT Stillwell University in Arizona.


Interests: Kristen volunteers with a youth group at her church and enjoys international mission trips. Kristen also enjoys spending time with her family.

Michelle Howland, Physician Assistant, is an Arizona Native. Michelle graduated from the University of Arizona. She completed her Master of Medical Science in Physician Assistant Studies at Midwestern University. Michelle is married and has two daughters.


Interests: Michelle enjoys spending time with her family, reading, and hiking.