AHN Grove City Leadership

Allan Klapper, MD, currently serves as president of AHN Grove City Hospital and AHN Wexford Hospital. A practicing obstetrician and gynecologist, Dr. Klapper joined Allegheny Health Network in 2011 and served as chair of the AHN Women's Institute before being named president of AHN Wexford Hospital in 2018. He played a key leadership role in the planning and construction of the hospital and has guided its growth since opening in 2021.

Under Dr. Klapper's leadership, AHN Wexford Hospital has earned recognition for excellence in quality, safety, and patient experience. In 2026, he assumed the additional role of president of AHN Grove City Hospital, strengthening collaboration between the two facilities and helping ensure coordinated, high-quality care for the communities they serve.

Dr. Klapper earned his medical degree from the Mount Sinai School of Medicine and completed his residency at New York University Medical Center. Prior to joining AHN, he served in leadership roles at New York Downtown Hospital and Beth Israel Medical Center, where he was director of Gynecology, Urogynecology & Pelvic Reconstructive Surgery and director of the Center for Female Continence and Pelvic Health.  

Dr. Hribar is an orthopaedic surgeon with special expertise in total joint replacement surgery for hips and knees. He is skilled and experienced in performing total hip arthroplasty, total knee arthroplasty, shoulder arthroscopy, and general fracture care. He received his medical degree from Temple University in Philadelphia, Pennsylvania, and completed his orthopaedic residency at the University of Pittsburgh Medical Center — Hamot, in Erie, Pennsylvania.

Dr. Hribar takes the time to listen to his patients, answer questions, and solve their problems. He works with athletes of all ages, covering sports medicine for local high school and college teams. He is a member of the American Academy of Orthopaedic Surgeons and certified by the American Board of Orthopaedic Surgeons. He also supports the work of the McGuire Foundation.

Jill Muir serves as the Chief Nursing Officer (CNO) for AHN Saint Vincent Hospital and AHN Grove City Hospital. In this role, she leverages her extensive experience and demonstrated leadership in nursing administration, quality improvement, and patient care to drive excellence across both institutions.

Prior to joining AHN, Jill held the position of Chief Nursing Officer for Penn Highlands DuBois, Penn Highlands Clearfield, and Penn Highlands Brookville hospitals. During her tenure, she spearheaded significant initiatives focused on trauma services, infection control, and nurse retention. Her career also includes roles as Director of Acute Care Services at Indiana Regional Medical Center and Manager of Disease/Complex Management at Highmark Health.

These experiences have provided her with a comprehensive understanding of healthcare operations and reinforced her commitment to delivering exceptional patient outcomes.

Jill holds a Doctor of Nursing Practice degree, a Master of Science in Health Services Leadership, a Bachelor of Science in Nursing, and a Diploma in Nursing.

Joshua Miller is the Director of Finance for Allegheny Health Network’s Grove City Hospital. As the finance director, Mr. Miller is responsible for overseeing and sustaining the financial performance of AHN Grove City, as well as budget planning, business forecasting, and funding for capital investments.

Mr. Miller joined AHN Grove City in 2022 and has over 13 years of progressive financial leadership experience, primarily within the health care industry. Prior to joining AHN, Mr. Miller served as Chief Financial Officer for Willamette Valley Medical Center in western Oregon, a hospital owned by LifePoint Health headquartered in Brentwood, Tenn. 

Previous to LifePoint Health, Mr. Miller also served as Chief Financial Officer for Linton Hospital, a community and critical access hospital outside of Bismarck, North Dakota.

Mr. Miller earned a Bachelor of Science degree in accounting from Penn State Behrend and his Master of Healthcare Administration degree from Louisiana State University Shreveport.

Adam Critchlow is the director of operations for Allegheny Health Network’s Grove City Hospital. 

Mr. Critchlow establishes strategic priorities and leads business operations for the facility. He works with the hospital’s administrative and clinical leadership teams and network executives to strengthen the hospital’s operations and provide oversight of the hospital's capital infrastructure.

Mr. Critchlow joined AHN in November 2020. Before coming to Grove City, he served in leadership and supervisory positions at University Hospitals in Cleveland, Ohio and at the VA Pittsburgh Healthcare System.  

Mr. Critchlow earned his Bachelor of Science degree in finance from Slippery Rock University and a Master of Health Administration degree from the University of Pittsburgh. He also received his Lean Black Belt certification through Purdue University.

Charmaine Rohan is the associate CNO for both Grove City and Saint Vincent Hospital.  As the Associate Chief Nursing officer, she is responsible for the clinical operational oversight of both facilities as well as maintaining an active role in the operations of Cardiac Services at Saint Vincent Hospital.

Ms. Rohan joined Grove City in November of 2023 and Saint Vincent Hospital in 1986 and has over 20 years of progressive nursing leadership and has served as a leader in many areas.  In addition to her leadership role, Ms. Rohan serves as adjunct faculty for Gannon University.

Ms. Rohan earned a Master’s in Health Care Systems, Nursing leadership track from Regis University in Denver Colorado in 2018.