Central California Faculty Medical Group (CCFMG) and its University Centers of Excellence are now Inspire Health Medical Group.

Gregory L. Simpson, MD

Division Chief of Dermatology, UCSF School of Medicine, Fresno Regional Campus

Medical Director, Inspire Health Medical Group - Dermatology

Professor, UCSF


Gregory L. Simpson, MD, is board certified in dermatology.

He earned his medical degree from the University of Tennessee, completed a preliminary internal medicine year at Georgetown University, and finished his dermatology residency at the Medical College of Georgia.

Since 2010, Dr. Simpson has worked with residents of the internal medicine, pediatrics, and emergency medicine departments, as well as medical students. His professional interests include complex medical dermatology, pediatric dermatology, bullous disorders, infectious diseases, birthmarks, skin malignancies, and all ranges of inflammatory skin conditions.

Dr. Simpson has given lectures in San Francisco, Washington, D.C., Georgia, Yosemite, and multiple locations in the greater Central Valley. He has presented at local high schools, raising awareness of skin cancer and melanoma, and helps to provide continuing medical education to many primary care physicians in Fresno. Dr. Simpson feels that he can help make a difference for multiple people who do not have access to dermatologic care.

He and his wife, a Fresno native, have three children and enjoy outdoor activities.


  • 2014 UCSF Best Faculty Award UCSF School of Medicine, Fresno Regional Campus
  • 2015 Pediatric Teaching Award Valley Children’s Hospital
  • 2016 Pediatric Teaching Award Valley Children’s Hospital
  • 2017 CRMC Faculty of the Year Award UCSF School of Medicine, Fresno Regional Campus
  • 2018 Best Faculty Teacher 2018 UC Merced San Joaquin Valley PRIME Program, Fresno

Education and Training

  • Dermatology Residency – Medical College of Georgia – Augusta, GA
  • Internal Medicine Internship – Georgetown University – Washington, DC
  • Doctor of Medicine – University of Tennessee at Memphis – Memphis, TN

Licensure & Certifications

  • American Board of Dermatology
  • California State Medical License

Research & Publications

  • O’Connell TD, Swigart PM, McCloskey DT, Simpson GL, Baker AJ, Simpson PC (2003). “Double knockout of the_aA/C- and_a1B-adrenergic receptors reduces heart and myocyte_b-adrenergic responses despite an increase in b-adrenergic receptors” Circulation 108: IV-1
  • O’Connell TD, Ishizaka S, Nakamura A, Swigart PM, Rodrigo MC, Simpson GL, Cotecchia S, Rokosh DG, Grossman W, Foster E, Simpson PC (2003). “The a1A/C- and a1B-adrenergic receptors are required for physiological cardiac hypertrophy in the double-knockout mouse” Journal of Clinical Investigation 111: 1783-1791
  • Simpson GL,Koo, JY. “Bath PUVA Revisited: Advantages, Disadvantages and Techniques” Psoriasis Forum, Spring 2006 Vol. 12, No 1.
  • Simpson GL, Yelverton CB, Rittenberg S, Feldman SR “Do utilization management controls for phototherapy increase the prescription of biologics?” Journal of Dermatology Treatment. 2006; 17(6):359-61. Review.
  • Alan L. Levy, Gregory Simpson, Robert B. Skinner, “Medical Pearl: Circle of Desquamation—A clue to the diagnosis of folliculitis and furunculosis caused by Staphylococcus aureus” /> JAAD, December 2006 (Vol. 55, Issue 6, Pages 1079-1080)
  • Simpson GL, Sheehan DJ. “Sarcoidosis” Southeastern Consortium 10/08
  • Simpson GL, Lesher JL. “Verrucous Sarcoidosis” Southeastern Consortium 10/08
  • Simpson GL, Davis LS, Guill M. “Sarcoidosis” Southeastern Consortium 10/08
  • Simpson GL, Lesher JL. “Necrobiosis Lipoidica” Southeastern Consortium 10/08
  • Simpson GL, Davis LS, Sheehan DJ. “Epidermolysis Bullosa Acquisita” Southeastern Consortium 10/08
  • Simpson GL, Lesher JL, Sheehan DJ. “Sarcoidosis” 55th Annual Zola Cooper Seminar 2008
  • Yentzer BA, Yelverton CB, Simpson GL, Simpson JF, Hwang W, Balkrishnan R, Feldman SR.“Paradoxical effects of cost reduction measures in managed care systems for treatment of severe psoriasis”Dermatology Online Journal. 2009 Apr 15; 15(4):1.
  • Kannan, Swati; Simpson, Gregory L; Sheehan, Daniel J; Lesher, Jack L Jr. “Giant verrucous nodules in a patient with tuberculosis” The American Journal of Dermatopathology. 31(6):591-593, August 2009.
  • Parachuru LV, Simpson GL, Davis, LD. “Secondary Syphilis” 56th Annual Zola Cooper Seminar 2009 accepted for publication.
  • Paul Haun, Gregory L. Simpson, Joshua Wharton, Daniel J. Sheehan. “Acute mental status change in an Immunocompromised patient” Clinical Infectious Diseases. 2010; 50:395-396.
  • Roffwarg D, Brown A, Alisangco M, Davis LS, Simpson G.”Bullous lesions with scarring and mutilation” JAAD 2010 Feb; 62(2):e9
  • Shroff A, Simpson G. Cutaneous manifestations of thyroid disease: a case of thyroid-induced myxedema. Case Rep Dermatol Med. 2011
  • Cohen SF, Simpson GL, Pruritic scaly plaques in a 75-year-old Hispanic man. Enterobius vermicularis (pinworm). Arch Dermatol. 2012 Sep 1; 148 (9): 1073
  • Pamela Sheridan, DO, Babu Singh, MD, and Gregory Simpson, MD. “A skin lesion in a migrant worker: J Am Acad Dermatol 2015;72:e1.0190-9622
  • Mosaab Mohameden, MD, University of California San Francisco Fresno; Uyen Ngoc Mui, MD, University of California San Francisco Fresno; Brady Bleicher, MD, University of California San Francisco Fresno; Gregory Simpson, MD, UCSF Fresno Dermatology Division Director. “Facebook as a portal for psoriasis patients’ education: An invitation for dermatologists to participate”Journal of the American Academy of Dermatology, Volume 76, Issue 6, AB138