Below is a comprehensive list of our Advanced Practice Providers (APPs), our physician-extender team that consists of physician assistants and certified registered nurse practitioners. These providers support our physicians and care for our patients in Orthopedic Surgery & Sports Medicine, Physical Medicine & Rehabilitation, Interventional Pain Management, Rheumatology and Osteoporosis.

Headshot of a smiling man in glasses, white shirt, and tie against a yellow background

William D. Abraham, MD

Hip & Knee Reconstruction

Cranberry/Mars, North Hills

Smiling man with glasses and gray hair in a collared shirt, indoors near a window

D. Kelly Agnew, MD

Hip & Knee Reconstruction

Butler-Clearview, Slippery Rock

Smiling man in a dark suit before a brick wall

Eric A. Chen, MD

Hip & Knee Reconstruction

Cranberry/Mars, North Hills, Sewickley

Smiling bald man in a white collared shirt outdoors with a blurred building background

Christopher T. Edwards, MD

Hip & Knee Reconstruction

Cranberry/Mars, North Hills

Orthopedic & Sports Medicine APPs

Provider Offices Specialty/Physician Team
Madison M. Abriatis, PA-C Cranberry/Mars, North Hills Hip & Knee Replacement, APP for Dr. Gabrielli
Matthew S. Bishop, CRNP BHS Crossroads, Slippery Rock Orthopedic Back & Neck, APP for Dr. Rainey
David S. Brown North Hills Independent APP
Jonathan Burns, PA-C Butler-Clearview Hip & Knee Replacement, APP for Dr. Agnew
Duane Chess, PA-C Cranberry/Mars, North Hills Hip & Knee Replacement, APP for Dr. Chen
Timothy Curtis, PA-C Cranberry/Mars, North Hills Orthopedic Foot & Ankle, APP for Dr. Edwards
Jake D'Antonio, PA-C Butler-Clearview, Cranberry/Mars, UPMC Lemieux Sports Complex Sports Medicine, APP for Dr. Szabo
Nick Fleisner, PA-C North Hills Hand & Upper Extremity, APP for Dr. Gause
Robyn M. Glass, PA-C Butler-Clearview, Slippery Rock Orthopedic Foot & Ankle, APP for Dr. Saar
Carolyn Hemphill, PA-C Butler Memorial Hospital Hospitalist APP on-site
Timothy J. Heusey, PA-C Cranberry/Mars, North Hills Rotating APP
Keenan Krause, PA-C Cranberry/Mars, North Hills Hand & Upper Extremity, APP for Dr. Gause II
Xavier Krause, PA-C Butler, Cranberry/Mars Rotating APP
Jason D. Kuchta, PA-C Butler-Clearview Hip & Knee Replacement, APP for Dr. Muzzonigro
Monica A. Leseman, PA-C UPMC Passavant Hospitalist APP on-site
Natalie K. Llewellyn, PA-C BHS Crossroads, Cranberry/Mars, UPMC Lemieux Sports Complex Sports Medicine, APP for Dr. Waltrip
Bethany M. Prince, PA-C BHS Crossroads Hand & Upper Extremity, APP for Dr. Pfaeffle
Jason Takacs Jr., PA-C North Hills Hand & Upper Extremity, APP for Dr. Gause
Chris VanSchepen, PA-C Butler-Clearview, Slippery Rock Hip & Knee Replacement, APP for Dr. Agnew
Jason J. Vasses, PA-C North Hills, Slippery Rock, UPMC Lemieux Sports Complex Sports Medicine, APP for Dr. Richmond
Rhett D. Wahler, PA-C BHS Crossroads, Cranberry/Mars Hand & Upper Extremity, APP for Dr. Pfaeffle
Zach Weber, PA-C Butler-Clearview Hip & Knee Replacement, APP for Dr. Muzzonigro
Becky Zahniser, PA-C Butler, North Hills Rotating APP

Physical Medicine & Interventional Pain APPs

Provider Offices Specialty/Physician Team
Michael T. Lugarich, PA-C BHS Crossroads, Cranberry/Mars, Slippery Rock Interventional Pain Medicine, APP for Drs. Craig & Shilk
Francis J. Savannah, CRNP BHS Crossroads, Cranberry/Mars Physical Medicine & Rehabilitation, APP for Drs. Gaines, Reidy & Woo
Smiling man with short gray hair in a light blue collared shirt against a white background

Trenton M. Gause, MD

Hand & Upper Extremity Care

North Hills

Smiling man in a light blue shirt, shown in a close-up portrait against a dark background

Thomas S. Muzzonigro, MD

Hip & Knee Reconstruction

Butler-Clearview

Portrait of a smiling man in a white shirt against a light background

Corey A. Pacek, MD

Hand & Upper Extremity Care

BHS Crossroads, Slippery Rock

Smiling man in a light shirt against a plain white background

H. James Pfaeffle, MD, PhD

Hand & Upper Extremity Care

BHS Crossroads, Cranberry/Mars

Portrait of a man with short dark hair wearing a blue shirt against a neutral background

Scott G. Rainey, DO

Orthopedic Back & Neck Care

BHS Crossroads, Slippery Rock

Headshot of a smiling person with short hair against a light background

John M. Richmond, MD

Sports Medicine & Shoulder Surgery

North Hills, Slippery Rock, Lemieux Sports

Close-up portrait of a man outdoors, wearing a light shirt and jacket, with a blurred green background

William E. Saar, DO

Orthopedic Foot & Ankle Care

Butler-Clearview, Slippery Rock

Smiling man in a white shirt against a light background

S. Joshua Szabo, MD

Sports Medicine & Shoulder Surgery

Butler-Clearview, Cranberry/Mars, Lemieux Sports

Close-up portrait of a smiling man with short dark hair on a light background

Robert L. Waltrip, MD

Sports Medicine & Shoulder Surgery

BHS Crossroads, Cranberry/Mars, Lemieux Sports

Smiling woman with long brown hair in a collared shirt against a plain beige background

Megan Groh Miller, MD

Primary Care Sports Medicine

BHS Crossroads, Slippery Rock

Smiling bald man with glasses wearing a dark jacket against a light background

James L. Cosgrove, MD

Physical Medicine & Rehab

Cranberry/Mars, Slippery Rock

Portrait of a smiling man in a white shirt against a beige background

James A. Craig Jr., DO

Physical Medicine & Rehab

BHS Crossroads, Cranberry/Mars

Close-up portrait of a smiling person outdoors with trees in the background

Chen Cui, MD

Physical Medicine & Rehab

BHS Crossroads, Cranberry/Mars, North Hills

Smiling blonde woman with glasses on her head outdoors, with a blurred green background

Anna K. Gaines, MD

Physical Medicine & Rehab

Butler-Clearview, Cranberry/Mars, North Hills

Close-up portrait of a smiling man in a light blue shirt against a white background

Edward D. Reidy, MD

Physical Medicine & Rehab

BHS Crossroads, North Hills

Smiling person in glasses and a white coat, seated indoors near a window.

Benedict C. Woo, MD

Physical Medicine & Rehab

BHS Crossroads, Cranberry/Mars, North Hills


Rheumatology & Osteoporosis APPs

Provider Offices Specialty/Physician Team
Rashelle L. Maderitz, PA-C Butler-Clearview, Cranberry/Mars, North Hills, Slippery Rock, New Castle Osteoporosis-designated APP
Kelly L. McCullough, PA-C Cranberry/Mars Rheumatology, APP for Dr. Shook
Ashley N. Morley, PA-C BHS Crossroads, Slippery Rock Rheumatology, APP for Dr. Devich
Holly B. Vasses, PA-C Cranberry/Mars, Slippery Rock Rheumatology, APP for Dr. Shook
Julia West, CRNP North Hills, UPMC Lemieux Sports Complex Rheumatology, APP for Dr. Devich
Smiling bald man in a white coat against a plain background

Joseph Devich Jr., DO

Physical Medicine & Rehab

BHS Crossroards, North Hills

Smiling woman with blonde hair in front of window blinds

Betsy F. Shook, MD

Rheumatology

Cranberry/Mars, Slippery Rock

Make your musculoskeletal health a priority!

Request an Appointment