Dr. R. Patrick Dorion

Dr. R. Patrick DorionR. PATRICK DORION, M.D.
Anatomic Pathology, Clinical Pathology, Hematology

100 North Academy Avenue
Danville, PA 17822-1920
1 800 695 6491

Dr. Dorion is an Associate of Geisinger Medical Laboratories at Geisinger Medical Center.


He received his M.D. from the Universidad de San Carlos de Guatemala, and received his pathology residency training at the Geisinger Medical Center in Danville, Pennsylvania. He completed a fellowship in Hematology at the Medical College of Virginia in Richmond.


Dr. Dorion is board certified in anatomic and clinical pathology as well as hematology. His areas of specialization include hematopathology and coagulation studies, head and neck pathology, soft tissue and bone pathology, and gastrointestinal pathology.

Publications in Peer-Reviewed Journals:

Cooper JD, Dorion RP, Smith JL. A rare case of Waterhouse-Friderichsen syndrome caused by Capnocytophaga canimorsus in an immunocompetent patient. Infection.2015; Feb:13,

Beer T, Dorion RP. Angioimmunoblastic T-Cell Lymphoma Presenting with an Acute Serologic Epstein-Barr Virus Profile. Hematol Rep.2015; 7(2):5893,

Beer T, Dorion RP. A case of angiosarcoma metastatic to bone marrow. J Case Rep Onc Ther.2015; 1(1):010117,

Cooper JD, Dorion RP, Smith JL. A rare case of Waterhouse-Friderichsen syndrome caused by Capnocytophaga canimorsus in an immunocompetent patient. Infecation.2015; 43(5):599-602,

Other Publications:

Egnatios GL, Ferringer T, Dorion RP. Multiple skeletal fractures and asymptomatic foot nodule.. ASDP Online Interactive Case Study, April, 2014.

Cooper JD, Dometita D, Hasan A, Dorion RP, Wolk DM, Martinez RM. "Orange" you glad you checked the buffy coat. Clinical Microbiology Newsletter 37(2), 9-13, 2015.

Abstracts, Posters, and Other Presentations:

Tsang P, Harrison HH, Perry D, Olson J, Dorion P, Schuerch C. Heparin-Induced Thrombocytopenia: Optimizing Laboratory Utilization and Anticoagulation Stewardship. Abstract (submitted) American Society for Clinical Pathology Annual Meeting, National Harbor, Maryland, October 2017.

Harrison HH, Tutaeva V, Dorion RP, Haynes AE, Schuerch C, Tsang P, Zhang K, Zhang X, Hematopathology Utilization Team, Kip NS. Utilization of Fluorescent In Situ Hybridization (FISH) Probe Panels in Routine Clinical Hematopathology Practice: Lymphoid and Plasma Cell Disorders. Abstract (submitted) American Society for Clinical Pathology Annual Meeting, Chicago, Illinois, September 2017.

Harrison HH, Dorion RP, Kip NS, Tsang P, Wehler A, Zhang K, Zhang M. Statistical benchmarks for HemeFISH utilization in a multi-hospital integrated delivery system. Abstract CAP Annual Meeting, Las Vegas, NV, September 25-28, 2016.

Harrison HH, Adler M, Kimmich, D, Knowles-Tuchman M, Costello D, Nowack, R, Mika A, Rockwell S, Shaeffer L, Dorion P, Grifone T, Olson J, Tsang P, Wilkerson M, Yu E, and the Analytical QC Team. Use of Sigma-based QC to monitor hematology and coagulation testing in an expending, multi-instrument, multi-site, integrated healthcare system. Abstract AACC Annual Meeting, Philadelphia PA, July 31-August 4, 2016.

Harrison HH, Young D, Sargent D, Labarbera J, Fereck C, Fitt W, Kimmich D, Kremitske D, Lopatka M, Sharretts S, Smeal K, Dorion P, Rolston R, Wilkerson M, Yu E, Jones JB. Expansion of a Multisite, Advanced Analytical QC Program to include Prothrombin Time Testing using Sigma Statistics Based on Auto-Generated Peer Values. Poster American Association for Clinical Chemistry Annual Meeting, Houston, TX, July 2013.

Textbook Chapters

Dorion RP, Zhang X. Bone Marrow. In Handbook of Practical Immunohistochemistry: Frequently Asked Questions, 2nd ed. Lin F, Prichard JW, Liu H, Wilkerson M, Chen ZM, eds. New York: Springer; 2015, 629-640.

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