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Gregory J. Zimmer, M.D.

Contact Information

Phone Numbers

Appointment: (585) 276-3000

URMFGA member of the University of Rochester Medical Faculty Group

groupAn Accountable Health Partner

assignmentNot Accepting New Patients

Faculty Appointments

Patient Care Setting

Emergency Medicine


Professional Background

Undergraduate: BS, Cornell University, June 1989
Medical School: MD, Uniformed Services University of the Health Sciences, May 1999

Professional Training
Internship in Basic Surgery, Naval Medical Center San Diego, June 1999 – June 2000
Residency in Emergency Medicine, Naval Medical Center San Diego, July 2004 – July 2007
Board Certified in Emergency Medicine, American Board of Emergency Medicine, December 2009

Operational Experience
General Medical Officer: Branch Medical Clinic, Naval Air Station
North Island, August 2003 – June 2004
General Medical Officer: Naval Hospital Twentynine Palms, November 2002 – August 2003
General Medical Officer: First Tank Battalion, MAGTFTC, 29 Palms, CA, April 2001- November 2002
General Medical Officer: 2nd Battalion, 7th Marines, MAGTFTC, 29 Palms, CA, July 2000 – April 2001

Professional Experience
Staff Physician, Emergency Department: Onslow Memorial Hospital, October 2010 – June 2014
Staff Physician, Emergency Department: Naval Hospital Camp Lejeune, October 2007 – October 2010
Staff Physician, Emergency Department: Naval Medical Center San Diego, July 2007 – October 2007


McKnight AJ, Zimmer GJ, Fogelman I, et al. Effects of IL-12 on Helper T Cell-Dependent Immune Responses In Vivo. Journal of Immunology. Mar 1994, 152(2) 2172-2179.

Zhang BW, Zimmer GJ, Chen J, et al. T Cell Responses in Calcineurin A alpha Deficient Mice. Journal of Experimental Medicine. Feb 1996, 183(2) 413-420.

Sur RL, Middleton GW, Zimmer GJ, et al. Establishment of the Normal Cross Sectional Distal Ureteral Anatomy to Assist with the Differentiation of Ureteral Calculi from Phleboliths. 18th World Congress on Endourology and SWL, Abstract no. P21-16.

Zimmer GJ, Fagen K, Shepherd M, et al. Case Report: An Unusual Cause of Post Partum Abdominal Pain. Journal of Emergency Medicine. Aug 2009, 37(2) 135-138.



  • Emergency Medicine - American Board of Emergency Medicine


MD | Uniformed Services University of the Health Scienc

Post-doctoral Training & Residency

07/12/2004 - 07/11/2007
Residency in Emergency Medicine at Naval Medical Center (San Diego)

07/01/1999 - 06/30/2000
Internship in Surgery at Naval Medical Center San Diego


Journal Articles

Zimmer, GJ.; Fagen, K.; Shepherd, M.; et al. "Case Report: An Unusual Cause of Post Partum Abdominal Pain." Journal of Emergency Medicine. 2009; 37(2): 135-138.

Zhang BW, Zimmer G, Chen J, Ladd D, Li E, Alt FW, Wiederrecht G, Cryan J, O'Neill EA, Seidman CE, Abbas AK, Seidman JG. "T cell responses in calcineurin A alpha-deficient mice." The Journal of experimental medicine.. 1996 Feb 1; 183(2):413-20.

McKnight AJ, Zimmer GJ, Fogelman I, Wolf SF, Abbas AK. "Effects of IL-12 on helper T cell-dependent immune responses in vivo." The Journal of immunology : official journal of the American Association of Immunologists.. 1994 Mar 1; 152(5):2172-9.