Below is a comprehensive list of our Advanced Practice Providers (APPs), who care for our patients in Orthopedics, Physical Medicine & Rehabilitation, and Rheumatology.

Orthopedic and Sports Medicine APPs

Hip & Knee Reconstruction

Man with glasses, wearing a white coat, smiling, indoor setting.

William D. Abraham, MD

Hip & Knee Reconstruction

Cranberry/Mars, North Hills

Man with glasses and mustache smiles, wearing a suit in an office setting.

D. Kelly Agnew, MD

Hip & Knee Reconstruction

Butler-Clearview, Slippery Rock

Man smiling in front of a brick wall, wearing a dark suit and white shirt.

Eric A. Chen, MD

Hip & Knee Reconstruction

Cranberry/Mars, North Hills, Sewickley

Man with a shaved head and a light blue shirt smiling outdoors.

Christopher T. Edwards, MD

Hip & Knee Reconstruction

Cranberry/Mars, North Hills

Bald man with a goatee wearing a yellow collared shirt against a gray background, smiling.

Duane Chess, PA-C

Cranberry/Mars, North Hills

APP for Dr. Chen

Man with short brown hair, smiling, wearing a dark blue and gray patterned polo shirt, against a gray background.

Cranberry/Mars, North Hills

APP for Dr. Abraham


Man in a brown blazer smiles, blue tie, dark background.

Jason Kuchta, MBA, PA-C

Butler-Clearview

APP for Dr. Muzzonigro

Man in a suit smiling broadly in front of a brick wall.

Chris VanSchepen, PA-C

Butler-Clearview, Slippery Rock

APP for Dr. Agnew

Man in suit smiles at the camera, light skin, short brown hair, tie, neutral background.

Butler-Clearview

APP for Dr. Muzzonigro


Sports Medicine & Shoulder Surgery

Man in white lab coat smiles in front of a brick wall. He wears a patterned tie and button-up shirt.

Jake D'Antonio, PA-C

Butler-Clearview, Cranberry/Mars, UPMC Lemieux Sports Complex

APP for Dr. Szabo

Woman smiling at camera, wearing striped jacket and necklace.

BHS Crossroads, Cranberry/Mars, UPMC Lemieux Sports Complex

APP for Dr. Waltrip


Man with short brown hair and beard smiles in a black shirt, against a gray background.

Jason Vasses, PA-C

North Hills, Slippery Rock, UPMC Lemieux Sports Complex

APP for Dr. Richmond

Hand & Upper Extremity Surgery

Man smiling at the camera, wearing a black shirt, against a beige wall.

Nick Fleisner, PA-C

North Hills

APP for Dr. Gause

Man smiling, wearing a light blue button-down shirt, against a gray background.

Cranberry/Mars, North Hills

APP for Dr. Gause II


Man with a shaved head and beard smiles in a patterned shirt and tie, against a neutral background.

Mike Lugarich, PA-C

BHS Crossroads, Slippery Rock

APP for Dr. Pacek

Woman with long brown hair smiling at the camera, wearing a blue shirt, against a light background.

Bethany Prince, PA-C

BHS Crossroads, Cranberry/Mars

APP for Dr. Pfaeffle

Man in a brown blazer, light blue shirt, and patterned red tie smiling in front of a gray background.

BHS Crossroads, Cranberry/Mars

APP for Dr. Pfaeffle


Man with glasses and beard, smiling. Wearing a maroon button-down shirt, against a cream-colored wall.

Jason Takacs, PA-C

North Hills

APP for Dr. Gause

Orthopedic Foot & Ankle Surgery

Woman with reddish-brown hair smiles, wearing a black shirt and silver jewelry, against a gray background.

Jennifer Clark, PA-C

Cranberry/Mars, North Hills

APP for Dr. Edwards

Woman with long brown hair, smiling, wearing a white collared shirt, against a grey backdrop.

Butler-Clearview, Slippery Rock

APP for Dr. Saar


Woman with long brown hair smiles, wearing a blue denim top, against a gray background.

Rebecca Zahniser, PA-C

Butler-Clearview, Slippery Rock

APP for Dr. Saar

Orthopedic Back & Neck Surgery

Man with glasses smiles, wearing a purple collared shirt, against a gray background.

BHS Crossroads, Slippery Rock

APP for Dr. Rainey


Additional Orthopedic APPs

Man with short auburn hair and beard, wearing a black shirt, against a gray background.

Dave Brown, PA-C

North Hills

Independent APP

Man smiling, looking at the camera. He wears a dark patterned shirt, set against a neutral background.

Multiple Locations

APP for Multiple Teams


Woman smiling, wearing a light green collared shirt, with short brown hair.

Carolyn Hemphill, PA-C

Independence Health System

Hospitalist APP

Woman with glasses wearing a white coat, smiling in front of a gray background.

UPMC Passavant

Hospitalist APP


Man in light blue scrubs smiles, headshot.

Trenton M. Gause, MD

Hand & Upper Extremity Care

North Hills

Man with short brown hair and a goatee smiles, wearing a light blue shirt under a white coat.

Thomas S. Muzzonigro, MD

Hip & Knee Reconstruction

Butler-Clearview

Man in a white coat smiling, looking at the camera. Soft lighting, neutral background.

Corey A. Pacek, MD

Hand & Upper Extremity Care

BHS Crossroads, Slippery Rock

Man with short brown hair smiling, wearing a light yellow shirt.

H. James Pfaeffle, MD, PhD

Hand & Upper Extremity Care

BHS Crossroads, Cranberry/Mars

Man with short brown hair, wearing a blue shirt, smiling at the camera.

Scott G. Rainey, DO

Orthopedic Back & Neck Care

BHS Crossroads, Slippery Rock

Smiling man with short brown hair, wearing a white shirt; blurred green background.

John M. Richmond, MD

Sports Medicine & Shoulder Surgery

North Hills, Slippery Rock, Lemieux Sports

Man with short brown hair, looking at the camera, wearing a light blue shirt. Blurred green foliage in the background.

William E. Saar, DO

Orthopedic Foot & Ankle Care

Butler-Clearview, Slippery Rock

Man smiling, wearing a white shirt with black trim; indoors with bright lighting.

S. Joshua Szabo, MD

Sports Medicine & Shoulder Surgery

Butler-Clearview, Cranberry/Mars, Lemieux Sports

Smiling man in a white coat, with a green, blurred background.

Robert L. Waltrip, MD

Sports Medicine & Shoulder Surgery

BHS Crossroads, Cranberry/Mars, Lemieux Sports

Woman with long, dark hair smiles; wears a collared shirt.

Megan Groh Miller, MD

Primary Care Sports Medicine

BHS Crossroads, Slippery Rock

Physical Medicine & Rehabilitation APPs

Bald man with glasses smiling, looking toward the viewer; indoor setting, blue shirt.

James L. Cosgrove, MD

Physical Medicine & Rehab

Cranberry/Mars, Slippery Rock

Man with short brown hair, smiles at the camera, wearing a light blue shirt.

James A. Craig Jr., DO

Physical Medicine & Rehab

BHS Crossroads, Cranberry/Mars

Man with dark hair smiling, outdoors; blurred greenery in background.

Chen Cui, MD

Physical Medicine & Rehab

BHS Crossroads, Cranberry/Mars, North Hills

Woman with short blonde hair and glasses smiles outdoors.

Anna K. Gaines, MD

Physical Medicine & Rehab

Butler-Clearview, Cranberry/Mars, North Hills

Woman with blonde hair smiling, wearing a black top against a gray background.

Debra Arbuthnot, CRNP

BHS Crossroads, Slippery Rock

APP for Drs. Cosgrove and Craig

Man with short gray hair smiles in a light blue shirt.

Edward D. Reidy, MD

Physical Medicine & Rehab

BHS Crossroads, North Hills

Smiling man wearing glasses and a white coat, likely in a medical setting.

Benedict C. Woo, MD

Physical Medicine & Rehab

BHS Crossroads, Cranberry/Mars, North Hills


Rheumatology APPs

Man with shaved head, smiling, wearing a black shirt under a white lab coat.

Joseph Devich Jr., DO

Physical Medicine & Rehab

BHS Crossroards, North Hills

Woman with blonde hair and bangs smiling. Wearing a white coat, likely in an office setting.

Betsy F. Shook, MD

Rheumatology

Cranberry/Mars, Slippery Rock

Woman with blonde hair smiles, wearing a black top and gold necklace, against a light gray background.

Kelly McCullough, PA-C

Cranberry/Mars

APP for Dr. Shook

Woman with long blonde hair, smiling, wearing a blue sleeveless top.

Cranberry/Mars, Slippery Rock

APP for Dr. Shook


Woman with dark hair smiles, wearing a dark blue top with floral print, against a light gray background.

Julia West, CRNP

BHS Crossroads, North Hills

APP for Dr. Devich


Woman with short brown hair smiles, wearing a black top.

Rashelle Maderitz, DMSc, PA-C

Butler-Clearview, Cranberry/Mars, North Hills, Slippery Rock

APP for Osteoporosis Program

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