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Dr. Sara Monaco

Dr. Sara E. Monaco

Dr. Monaco is an associate of Geisinger Medical Laboratories at Geisinger Medical Center in Danville, Pennsylvania, where she serves as the System Director of Cytopathology.

She received her MD from Columbia University College of Physicians and Surgeons, New York, New York. She received residency training in anatomic and clinical pathology at Columbia University Medical Center and University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania. Dr. Monaco also completed a cytopathology fellowship at University of Pittsbugh Medical Center and received ultrasound-guided FNA certification from the College of American Pathologists.

Dr. Monaco is board certified in anatomic and clinical pathology and in cytopathology. Her primary area of interest is in non‐gynecologic cytopathology, particularly the use of fine needle aspiration biopsy and the application of molecular techniques in cytopathology, in addition to gynecologic surgical pathology and cytopathology.


Dr. Jerad M. Gardner

Dr. Jerad Gardner is an Associate of Geisinger Medical Laboratories at Geisinger Medical Center where he specializes in dermatopathology and soft tissue and bone pathology.

He received his M.D. from Tulane University School of Medicine, New Orleans, Louisiana, and his pathology residency training at Houston Methodist Hospital, Houston, Texas. He completed fellowships in soft tissue pathology and in dermatopathology at Emory University, Atlanta, Georgia.

Dr. Gardner board certified in anatomic and clinical pathology, as well as dermatopathology. His research interests include dermatofibrosarcoma protuberans (DFSP), other rare genetic conditions, bone and soft tissue tumors, and professional use of Facebook, Twitter, Instagram, Snapchat, and other social media.



Zachary S. Hoffer, MD, PhD

Dr. Zachary Hoffer is an Associate of Geisinger Medical Laboratories at Geisinger Medical Center in Danville, Pennsylvania. His areas of specialization include autopsy, neuropathology, breast, GI, and thoracic pathology.

He received his MD from Drexel University College of Medicine, Philadelphia, Pennsylvania, and his PhD in neuroscience and neuroanatomy from Pennsylvania State University College of Medicine, Milton Hershey Medical Center, Hershey, Pennsylvania. He completed his pathology residency at Madigan Army Medical Center, Fort Lewis, Washington, and a fellowship in neuropathology at University of Washington, Harborview Medical Center, Seattle, Washington. Dr. Hoffer was also trained in and practiced pathology in the U.S. Army Medical Corps for 12 years.

Dr. Hoffer is board-certified in anatomic and clinical pathology and neuropathology. His research interests include neuropathologic and neurodegenerative diseases and traumatic brain injury.


Racel Wywadis LahlouRachel Wywadis Lahlou, MS, MLS(ASCP)

Please join us in welcoming back Rachel Wywadis Lahlou, MS, MLS(ASCP) to our team as our Quality Systems Coordinator in Danville. Rachel previously worked in Microbiology from 2008 to 2010. She is a certified Medical Laboratory Scientist and is also licensed in New York state. She has earned her BA degree in Chemistry from Bucknell University, Lewisburg, and an MS degree in Bioscience Technologies from Thomas Jefferson University, Philadelphia.

Rachel has a wealth of knowledge and experience particularly in Microbiology and Molecular Microbiology. She has participated and led various quality improvement initiatives in New York Presbyterian Columbia University Medical Center.

Rachel’s office is located on the GMC campus.


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