Our Physicians

Michael J. Greller, MD, MBA, CPE, FAAOS

Board-Certified Orthopedic Surgeon
Fellowship Trained in Sports Medicine

Alan S. Nasar, MD, FAAOS

Board-Certified Orthopedic Surgeon
Fellowship Trained in Joint Replacement Surgery

Stacey Gallacher, MD, FAAOS

Board-Certified in Orthopedic Surgery
Fellowship Trained in Upper Extremity Surgery

Eric Buxbaum, DO

Board-Certified Orthopedic Surgeon
Fellowship Trained in Adult Reconstruction, Hip and Knee Arthroplasty

Justin Elkrief, DO

Fellowship Trained in Orthopedic Spine Surgery

Thomas A. Del Guercio, MD

Dual Board-Certified - Pain Medicine and Physical Medicine

Garret L. Sobol, MD

Board-Certified Orthopedic Surgeon
Fellowship Trained in Sports Medicine

Arth Patel, MD, MPH

Primary Care Sports Medicine Physician

Alison DeWaters, DPM, FACFAS

Board-Certified in Foot and Ankle Surgery

Ali Valimahomed, MD, FAAPMR

Dual Board-Certified - Pain Medicine and Physical Medicine
ACGME Fellowship Trained in Pain Medicine

John S. Georgy, MD, MBA

Pain Management Physician
Fellowship Trained in Pain Management

Wesley Nesbit, DPM

Podiatric Physician & Surgeon

Joseph Tauro, MD

Board-Certified Orthopedic Surgeon

Gerardo Goldberger, DO, FAOAO

Board-Certified Orthopedic Surgeon

David Kirschenbaum, MD

Board-Certified in Orthopedic Surgery
Fellowship Trained in Hand Surgery

Edward J. Armbruster, DO, MBA

Board-Certified Orthopedic Surgeon
Fellowship Trained in Hand Surgery

Scott Hanwacker, PA-C

Physician Assistant

Daniel Vernik, PA-C

Physician Assistant

Timothy Dowse, PA-C

Physician Assistant

Sagar Naik, PA-C

Physician Assistant

Gwen Urs, DMSc, MS, PA-C

Physician Assistant

Ryan Sullivan, PA-C

PHYSICIAN ASSISTANT

Peter Sanzio, MS, PT

DIRECTOR OF THERAPY

Charles Archbald, III, MSPT

PHYSICAL THERAPIST

Joseph Peragine, PT, DPT

PHYSICAL THERAPIST

Dr. Ryan Dean, PT, DPT

PHYSICAL THERAPIST

Vidisha Shah, PT, DPT

PHYSICAL THERAPIST

WenBin Kuang PT, DPT, OCS, AIB- VRC

PHYSICAL THERAPIST

Vineela Jagana, PT, DPT

PHYSICAL THERAPIST

Anthony Baldachino, PT

PHYSICAL THERAPIST

Rebecca Goydish

PHYSICAL THERAPY ASSISTANT

Anthony Lo, PTA

PHYSICAL THERAPIST ASSISTANT

Leah Rubino, ORT/CHT, CLT-LANA

OCCUPATIONAL THERAPIST

Julita Jozwiak

MASSAGE THERAPIST

Heather Quinlivan, L. AC

ACUPUNCTURIST

"Personable care and attention to every one of my concern and questions. Most important is the fact that pain management works. I feel so much better today. Thank you Dr. Greller."

- Annie B.

"Excellent service ! Dr. Nasar knew exactly what my problem was and was extremely professional! I highly recommend this office!"

- David M.

"Thoroughly examined and given alternatives. I found Dr. Gallacher very professional and would highly recommend her, without reservations!"

- Tino C.

"Excellent! Dr Buxbaum was great. He explained to both my husband and I the facts and risks for me to have a hip replacement. He is professional and caring."

- Linda W.

"Great experience at AOSMI. Staff are wonderful and very helpful. Dr. Elkrief was very knowledgeable, polite and took his time to explain everything and answer my questions. I would definitely recommend AOSMI."

- Carrie M.

"Dr. DelGuercio is very thorough, knowledgeable, and excellent doctor. He explained everything on my MRI’s to me, answered all my questions, examined me, and then recommended all my treatments going forward."

- Marc G.

"Welcoming environment from the time i walked in - everyone on the team is definitely focused on putting the patient first! Dr Sobol - extremely caring attitude - clear communication style. Highly recommend this caring practice!"

- Cathyann F.

"Thank you all ! From the front desk to the exit desk .. Dr. Arth Patel, was on time , courteous, very informative and helpful. He will be my knee doctor from now on . Appreciated them all ."

- Elle H.

"My first visit with Dr DeWaters was one of the best experiences I have encountered. She was through, kind and explained everything to me in detail. I look forward to future visits. The staff was great and added to a great appointment. Lorraine Bogdan"

- George B.

"The entire staff at Advanced Orthopedics was very professional and thorough. Definitely a first class experience all the way through. Dr. Valimahomed was top-notch. Did not rush. Spent a lot of time with physical assessments and explaining results of various scans. Obviously, he's very knowledgeable and knows his stuff. Excellent experience from start to finish. Thank you!"

- Laura P.

"Dr Georgy is the best ... he has patience with his patients, he listens with understanding that your pain is real and not discounted! He explains things thoroughly . . . Great sense of humor and gentle in his approach!"

- Linda S.

"I would definitely recommend Dr. Nesbit. He took a lot of time to carefully look at the mechanics of my foot and diagnose the issue and he has a nice caring manner."

- Olive T.

"I visited the office of Dr. Tauro yesterday afternoon, and was pleased with the attentiveness and level of care I received. The office is welcoming and you are greeted in a warm, friendly and professional manner. Each staff member was helpful and delightful, putting you at ease immediately! Dr Tauro is so pleasant and knowledgeable. He is patient both in examining and explaining the news that follows and in outlining your options."

- Karen D.

"Dr Goldberger is an excellent physician kind professional explains procedures well.Its a pleasure to have him as my physician"

- Karen S.

"Dr. Goldberger took time to explain everything in detail. Gave me options and eased my mind about process and recovery."

- Daniel B.

Read All Patient Reviews

Our Physicians

Michael J. Greller, MD, MBA, CPE, FAAOS

Alan S. Nasar, MD, FAAOS

Stacey Gallacher, MD, FAAOS

Eric Buxbaum, DO

Justin Elkrief, DO

Thomas A. Del Guercio, MD

Garret L. Sobol, MD

Arth Patel, MD, MPH

Alison DeWaters, DPM, FACFAS

Ali Valimahomed, MD, FAAPMR

John S. Georgy, MD, MBA

Wesley Nesbit, DPM

Joseph Tauro, MD

Gerardo Goldberger, DO, FAOAO

David Kirschenbaum, MD

Edward J. Armbruster, DO, MBA

OTHER PROFESSIONALS

Scott Hanwacker, PA-C

Daniel Vernik, PA-C

Timothy Dowse, PA-C

Sagar Naik, PA-C

Gwen Urs, DMSc, MS, PA-C

Ryan Sullivan, PA-C

Peter Sanzio, MS, PT

Charles Archbald, III, MSPT

Joseph Peragine, PT, DPT

Dr. Ryan Dean, PT, DPT

Vidisha Shah, PT, DPT

WenBin Kuang PT, DPT, OCS, AIB- VRC

Vineela Jagana, PT, DPT

Anthony Baldachino, PT

Rebecca Goydish

Anthony Lo, PTA

Leah Rubino, ORT/CHT, CLT-LANA

Julita Jozwiak

Heather Quinlivan, L. AC

Pond View Professional Park

Renaissance Crossing Medical Arts Building