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PentaHealth Family Practice West Chester

Peyton Holowsko, CRNP

April 23, 2025 by

Peyton earned a Bachelor of Science in Nursing from La Salle University in 2020. She started her career as an RN in the Surgical Trauma ICU with Einstein Medical Center in Philadelphia. Her pursuit of a Master of Science in Nursing degree began with her undergraduate alma mater in August 2021. The academic program concentration was Family Nurse Practitioner, so Peyton transitioned from acute care to primary care when she came to work for PentaHealth in December 2021. She worked as a full-time RN while participating in La Salle University’s MSN program. Peyton completed the MSN program in December 2024.

Peyton is board certified through the American Academy of Nurse Practitioners. She enjoys listening to patients, teaching them about their health, and cultivating lasting patient relationships. She values the ability to care for the whole family when all are patients of the Family Practice. Peyton has a special interest in working with adolescents and young adults.

When she is not seeing patients, one of Peyton’s favorite things to do is walk the dog with her husband and have a morning coffee in hand. She also enjoys reading, cooking, and traveling, but most importantly she cherishes spending time with her family.

Hubert Wu, DO

April 16, 2025 by

Dr. Hubert Wu obtained his medical degree at the Philadelphia College of Osteopathic Medicine. He went on to complete his residency at Penn State Health – St. Joseph’s in Family and Community Medicine, where he was elected as Chief Resident during his 3rd year. Dr. Wu has worked as an Attending Hospitalist on medical/surgical/ICU floors as well as an outpatient primary care provider in a hybrid role, valuing the traditional approach to Family Medicine in both the inpatient and outpatient setting.

Dr. Wu’s interests span the entire spectrum of primary care. He strives to promote patient’s health with a collaborative and accountable approach. He prides himself on finding ways to individualize his care with each one of his patients.

He enjoys spending time with family, which includes his three children (and all the chaos that entails) and wife.

Sissy John, MD

January 19, 2024 by

About Sissy

Dr. John completed her pre-medical studies at the University of Szeged in Hungary, followed by medical school at the Medical University of Lublin in Lublin, Poland. Dr. John further honed her skills and expertise by completing her residency at the Montgomery Family Practice in Norristown, PA.

Throughout her educational journey and residency, Dr. John has demonstrated a commitment to excellence and a passion for providing quality patient care. Her dedication to patient well-being aligns seamlessly with our commitment to delivering exceptional healthcare services to our community!

Sony John, MD, MHA, FAAFP

July 1, 2021 by

About Sony

Dr. John studied at Franklin and Marshall College in Lancaster, PA where he received his undergraduate degree. He later attended medical school at The Medical University of Silesia, Poland. He completed his residency at Drexel Family Medicine and received his master’s degree in health care administration from St. Joseph’s University. Dr. John has been a board certified family physician for the past 10 years. He also received his fellowship from the American Academy of Family Physicians.

As a family physician, he enjoys the opportunity to build a relationship with the patient and their families. Taking care of sports related injuries is one of his special interests.

Dr. John is married with 2 children. When he is not seeing patients, he likes to watch the Philadelphia Eagles and 76ers, play ultimate frisbee and basketball, and of course spending time with his family.

Brian R. Boucher, MD

July 31, 2018 by

About Brian

Dr. Brian Boucher was born and raised in West Chester, PA, and is a graduate of Bucknell University. He obtained his medical degree at Jefferson Medical College in Philadelphia, and completed his residency training in Family Practice at Abington Memorial Hospital in Jenkintown, PA. In 2018 and 2024, he was named one of the Top Doctors by MainLine Today magazine.

Dr. Boucher joined PentaHealth Family Practice West Chester in September 2022 after 19 years with PentaHealth Colonial Family Practice in Coatesville. He has a special interest in Sports Medicine, joint injections, and dermatology.

He resides in West Chester with his wife and three children, and enjoys ice hockey, golf, and playing his acoustic guitar.

Charles P. Catania, MD

July 31, 2018 by

About Charles

Dr. Charles P. Catania is Board Certified in Family Medicine and Hospice Medicine. He received his medical degree from the American University of the Caribbean School of Medicine; trained in England; and completed residency at Underwood Memorial Hospital in Woodbury, New Jersey, where he was named Chief Resident in 2009 and served on the New Jersey Academy of Family Physicians Board of Directors as the Resident Delegate.

Dr. Catania has been in a private practice setting since 2010 in southern New Jersey and was named “Readers’ Choice Top Doc” in South Jersey Magazine in August 2013.

Dr. Catania has an interest in pediatrics, with an emphasis in genetics due to his previous experiences working at The Children’s Hospital of Philadelphia. He also has an interest in minor dermatological procedures, diabetes and adolescent medicine.

He treasures time with his wife, Kimberly, and their two boys, Jack and Joseph. They frequently can be seen on trips to the zoo or just spending quality time with their large extended family. Dr. Catania takes pride in bringing a very personal and friendly experience when caring for his patients and their families.

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Recent Posts

  • Mammogram Event May 16th
  • Welcome Peyton Holowsko, CRNP
  • Welcome Dr. Hubert Wu
  • Retirement of Dr. Jean Stretton
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