Gastrointestinal Pathology

Jinhong Li, MD, PhD, GML Gastrointestinal Pathology  Subspecialty Group

Jinhong Li, MD, PhD

Group Leader
Dr. Cletus Baidoo
Cletus Baidoo, MD, MPH
Dr. Hongbing Deng
Hongbing Deng, MD, PhD

R. Patrick Dorion, Director of GML Hematology, and member of the GML Gastrointestinal Pathology Subspecialty Group

R. Patrick Dorion, MD
Dr. Renee Frank
Renee Frank, MD

Zachary S. Hoffer, MD. PhD

Jialing Huang, MD, PhD

Hongjie Li, MD, PhD

Jianhong Li, MD. PhD

Led by Dr.Jinhong Li, the Geisinger Medical Laboratories (GML) Gastrointestinal (GI) Pathology Subspecialty Group has focused training and experience in evaluating diseases of the esophagus, stomach, intestines and anus as well as the the associated organs of the pancreas, gallbladder and bile ducts.

Sample upper GI biopsy report
Sample lower GI biopsy report

Gastrointestinal pathology subspeciality group members have conducted extensive research, published many articles in peer-reviewed journals, and have presented at national conferences



How are specimens transported to your laboratory?

Our couriers retrieve and transport specimens from regional physicians' offices, and we provide prepaid Federal Express services for physicians with offices beyond our courier service area.

How can I get my patients' results?

Reports can be delivered delivered via fax, mail, courier, or electronically.

Do you offer a slide consultation service for second opinion?

Yes. Our specialists offer consultative services that provide guidance for additional diagnostic workup, prognostic information, pathogenetic insight, and therapeutic direction. Please forward the slides, previous surgical pathology reports and, if possible, the paraffin blocks, along with the request.

Do you offer slide preparation and technical services?

Yes, Geisinger Medical Laboratories provides histologic preparation and immunohistochemistry in addition to comprehensive diagnostic services.

Do you offer client billing?

GML offers several billing options:

  1. Contracted Client Billing: GML clients will receive monthly itemized invoices for services provided.
  2. Patient Billing: GML can bill the patient directly if complete billing information is provided on the test requisition form at the time the specimen is submitted. If you have arranged for GML to bill directly, please advise the patient to expect a bill from Geisinger Medical Laboratories
  3. Third Party Billing: GML will bill the patient's insurance company directly.

For details about billing options, please see How to...Pay Your Bill.


Dr. Fan Lin, Leader of the GML Gastrointestinal Pathology Subspecialty Group
Fan Lin, MD, PhD
Dr. Liu
Haiyan Liu, MD

Mark J. Mentrikoski, MD
Dr. Michelle Pramick
Michelle Pramick, MD
William Quinones, MD
William Quinones, MD
Hong Yin, MD
Hong Yin, MD
Kai Zhang, MD, FACP, GML Gastrointestinal Pathology  Subspecialty Group
Kai Zhang, MD, FCAP
Dr. Mary Zhang
Xiahong (Mary) Zhang, MD, PhD.
Shaobo Zhu, MD
Shaobo Zhu, MD



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