Dr Fung

Maxwell A. Fung, M.D. (Director) is Board-certified in Dermatology and Dermatopathology and has been engaged in the full-time practice of academic medicine as an attending physician for 18 years. Dr. Fung wears two patient care hats: one as a dermatopathologist who interprets skin biopsy specimens, and one as a dermatologist evaluating patients at the bedside (currently by physician-to-physician consultation only). His clinical interests include the evaluation and management of stubborn itchy rashes that elude conventional classification. His original research focuses on ways to improve diagnostic accuracy and communication between practicing dermatologists and dermatopathologists in ways that are practical and of immediate clinical relevance (see eosinophils, alopecia, dermal hypersensitivity, epidermotropism versus exocytosis, caterpillar bodies, dysplastic nevus). Dr. Fung also enjoys collaborating with world-class scientists for basic research endeavors (see galectin-3, comparative transcriptomics, microparticles).

Dr. Fung was born and raised in Sacramento, a graduate of John F. Kennedy Sr. High School. After completing undergraduate studies at Stanford University and medical school at University of California San Francisco, he completed an internship in Internal Medicine at Beth Israel Hospital, Boston, Massachusetts. Dermatology residency training and chief residency were served at UC San Francisco, followed by dermatopathology fellowship training at Cornell University Medical Center under the direction of N. Scott McNutt, MD.

From 1998 to 2002, Dr. Fung was Assistant Professor at the University of Connecticut School of Medicine, attending the Dermatopathology Service and Dermatology Clinics. During this time, he also directed the Multi-Disciplinary Cutaneous Lymphoma Clinic. Joining UC Davis in 2002, Dr. Fung received a 2003 Award for Excellence and Dedication in Teaching from the UC Davis Department of Dermatology. In 2005, Dr. Fung was elected into the Alpha Omega Alpha Honor Medical Society and served as President of the Sacramento Valley Dermatology Society.

Dr. Fung has served as Associate Professor (2006-2012) and, as of 2012, Professor of Clinical Dermatology & Pathology at UC Davis. Dr. Fung is the founding and current Director of the UC Davis Dermatopathology Service, also serving as its CLIA Medical Director. Regionally, Dr. Fung is a dermatopathology consultant for the Sacramento Valley Dermatology Society and enjoys attending local journal club meetings. Dr. Fung received the Outstanding Faculty Member Award from the UC Davis Department of Dermatology (2006, 2011) and the Faculty Teaching Award from the UC Davis Department of Pathology & Laboratory Medicine (2006). Dr. Fung is also Vice Chair for Academic Personnel and recently served as the first Mentoring Director (UC Davis Health System Mentoring Academy) in the Dermatology Department at UC Davis.

Dr. Fung is a member of two Editorial Boards: Journal of Cutaneous Pathology and Dermatology Online Journal, and is a Faculty Member of F1000 Medicine (Dermatologic Pathology Section, f1000medicine.com). Dr. Fung serves as a Vice Chair for the Dermatology Foundation and serves on the Test Development and Advisory Committee for the American Board of Pathology (Dermatopathology). Dr. Fung has also served on the Board of Directors (Member-At-Large) of the American Society of Dermatopathology and two terms as a Member of the Executive Committee of the International Society of Dermatopathology.  Dr. Fung also enjoys lecturing, including the meetings of the American Academy of Dermatology, American Society of Dermatopathology, International Society of Dermatopathology, College of American Pathologists, and Board Review courses. Dr. Fung has authored or co-authored over 80 original manuscripts and textbook chapters. He enjoys playing tennis, mountain biking, the piano, attending Sacramento Kings games, and spending time with his wife and children.

Title: Professor of Clinical Dermatology and Pathology; Director, UC Davis Dermatopathology Service

Specialty: Dermatology, Dermatopathology

Undergraduate Education: Stanford University, Stanford, California, A.B. 1989 with distinction

Medical Education: University of California-San Francisco, San Francisco, California, M.D. 1993

Internship: Harvard Medical School, Beth Israel Hospital, Boston, Massachusetts 1993-94, Internal Medicine.

Residency: University of California-San Francisco, San Francisco, California 1994-97, Chief Resident 1996-97, Dermatology

Fellowships: Cornell Medical Center New York, NY, 1997-98, Dermatopathology

Board Certifications:
American Board of Dermatology, 1997 (re-certified, 2006)
American Board of Dermatology and American Board of Pathology with qualification in Dermatopathology, 1998

Professional Memberships: 
American Academy of Dermatology
American Society of Dermatopathology
Dermatology Foundation, Annenberg Circle                                                                                                   Association of Professors of Dermatology

College of American Pathologists
Dermatology Foundation
International Society of Dermatopathology

Editorial Boards:
Journal of Cutaneous Pathology

Teaching Awards: UC Davis Department of Dermatology (2002, 2006, 2011), UC Davis Department of Pathology (2006), Osler Institute (2004)

Alpha Omega Alpha Honor Medical Society
Phi Beta Kappa Society


Ogawa T, Kiuru M, Konia TH, Fung MA. Acantholytic squamous cell carcinoma is usually associated with hair follicles, not acantholytic actinic keratosis, and is not "high risk": Diagnosis, management, and clinical outcomes in a series of 115 cases.  J Am Acad Dermatol. 2017 Feb;76(2):327-333.

Millsop JW, Sharon VR, Petukhova T, Fung MA, Kiuru M.  Chemotherapy reaction induced by ixabepilone, a microtubule stabilizing agent, mimicking extramammary Paget's disease in a patient with breast carcinoma. J Cutan Pathol. 2016 Dec;43(12):1215-1219.

Petukhova TA, Tartar DM, Mayo K, Fung MA, Tuscano J, Jagdeo J. Erythema Nodosum-like Septal Panniculitis Secondary to Lenalidomide Therapy in a Patient With Janus Kinase 2-Positive Myelofibrosis. J Drugs Dermatol. 2016 Aug 1;15(8):1024-5. 

Gingrich AA, Fung MA, Konia T, Canter RJ. Locally Advanced Spiroadenocarcinoma in the Regional Axilla of a Breast Cancer Patient: Hallmarks of Definitive Diagnosis and Management. Rare Tumors. 2015 Sep 7;7(3):5912.

Shi VY, Tran K, Patel F, Leventhal J, Konia T, Fung MA, Wilken R, Garcia MS, Fitzmaurice SD, Joo J, Monjazeb AM, Burrall BA, King B, Martinez S, Christensen SD, Maverakis E. 100% Complete response rate in patients with cutaneous metastatic melanoma treated with intralesional interleukin (IL)-2, imiquimod, and topical retinoid combination therapy: results of a case series. J Am Acad Dermatol. 2015 Oct;73(4):645-54.

Loh E, Armstrong AW, Fung MA. Pre-bisection of a single skin biopsy does not produce technically inadequate specimens for direct immunofluorescence: a review of 3450 specimens. J Am Acad Dermatol. 2015 Oct;73(4):645-54.

Fung MA, Sharon VR, Ratnarathorn M, Konia TH, Barr KL, Mirmirani P. Elastin staining patterns in primary cicatricial alopecia. J Am Acad Dermatol. 2013 Nov;69(5):776-82.

Nazerali RS, Tan C, Fung MA, Chen SL, Wong MS. Hidradenocarcinoma of the finger. Ann Plast Surg. 2013 Apr;70(4):423-6.

Chang S, Hersh AM, Naughton G, Mullins K, Fung MA, Sharon VR. Disseminated cutaneous sporotrichosis. Dermatol Online J. 2013 Nov 15;19(11):20401.

Ibrahimi OA, Jim On SC, Fung MA, Eisen DB. A longstanding deep-seated nuchal tumor. Int J Dermatol. 2012 Aug;51(8):910-2.

Sharon VR, Konia TH, Barr KL, Fung MA. Assessment of the 'no eosinophils' rule: are eosinophils truly absent in pityriasis lichenoides, connective tissue disease, and graft-vs.-host disease? J Cutan Pathol. 2012 Apr;39(4):413-8.

Tu KL, Sharon VR, Fung MA. What on earth?!: diatomaceous earth as evidence of delusional infestation. J Cutan Pathol. 2011 Oct;38(10):761-4.

Liu YC, Fung MA. Angiosarcoma with pseudoepidermotropism in a patient with breast cancer: a mimic of epidermotropic metastatic adenocarcinoma. Am J Dermatopathol. 2011 Jun;33(4):400-2.

Chamber CJ, Reyes Merin M, Fung MA, Huntley A, Sharon VR. Primary cutaneous mucormycosis at sites of insulin injection. Journal of the American Academy of Dermatology 2011 May;64(5):e79-81.

Garcia MS, Ono Y, Martinez SR, Chen SL, Goodarzi H, Phan T, Wehrli LN, Miyamura Y, Fung MA, Maverakis E. Complete regression of subcutaneous and cutaneous metastatic melanoma with high dose intralesional interleukin 2 in combination with topical imiquimod and retinoid cream. Melanoma Res. 2011 Jun;21(3):235-43.

Barr KL, Konia TH, Fung MA. Lupus erythematosus-like imiquimod reaction: a diagnostic pitfall. Journal of Cutaneous Pathology 2011;38:346-50

Bailey T, Fung MA, Gandour-Edwards R, Ellis WG, Schrot RJ. Clinical emergence of neurometastatic Merkel cell carcinoma: a surgical case series and literature review. Journal of Neurooncology 2011 Mar;102(1):147-55. Epub 2010 Jul 29.

Cheng LS, Mulgrew K, Lin S, Idriss N, Eisen DB, Fung MA, Armstrong AW. A pale version. Am J Med. 2010 Sep;123(9):802-4.

Sharon VR, Eisen DB, Fung MA. Cutaneous septic emboli from Candida tropicalis. Lancet Infect Dis. 2010 Sep;10(9):652.

Merin MR, Fung MA, Eisen DB, Lin LK. Cutaneous Histoplasmosis Presenting as Cutaneous Malignancy. Ophthalmic Plastic and Reconstructive Surgery 2010 Sep 20. Epub ahead of print]

Cheng LS, Mulgrew K, Lin S, Idriss N, Eisen DB, Fung MA, Armstrong AW. A pale version. American Journal of Medicine 2010 Sep;123:802-4.

DeFelice T, Fung MA, Wu JJ. A red plaque on the cheek: pyoderma faciale. Dermatology Online Journal 2010;16:7.

Fung MA. “Epidermotropism” versus “exocytosis” of lymphocytes 101: definitions of terms. Journal of Cutaneous Pathology 2010;37:525-9. Epub 2010 Feb 4.

Sharon V, Goodarzi H, Chambers CJ, Fung MA, Armstrong AW. Erythema induratum of Bazin. Dermatol Online J. 2010 Apr 15;16(4):1.

Loh S, Bagheri S, Katzberg RW, Fung MA, Li CS. Delayed adverse reaction to contrast-enhanced CT: a prospective single-center study comparison to control group without enhancement. Radiology. 2010 Jun;255(3):764-71. Epub 2010 Apr 20.

DeFelice T, Fung MA, Wu JJ. A red plaque on the cheek. Dermatol Online J. 2010 Mar 15;16(3):7.

Fung MA. 'Epidermotropism' vs. 'exocytosis' of lymphocytes 101: definition of terms. J Cutan Pathol. 2010 May;37(5):525-9. Epub 2010 Feb 4.

Zhang CZ, Fung MA, Eisen DB. Disseminated fusariosis presenting as panniculitis-like lesions on the legs of a neutropenic girl with acute lymphoblastic leukemia. Dermatol Online J. 2009 Oct 15;15(10):5.

Saegusa J, Hsu DK, Chen H-Y, Yu L, Fermin A, Fung MA, Liu F-T. Galectin-3 is critical for the development of the allergic inflammatory response in a mouse model of atopic dermatitis. Am J Pathol 2009;174:922-931.

Wadhera A, Maverakis E, Mitsiades N, Lara P, Fung MA, Lynch PJ. Thymoma-associated multiorgan autoimmunity: a graft-versus-host-like disease. J Am Acad Dermatol 2007;57:683-89.

Peterson A, Katzberg RW, Fung MA, Wootton-Gorges SL, Dager W. Acute generalized exanthematous pustulosis as a delayed dermatotoxic reaction to IV-administered nonionic contrast media. Am J Roengenol 2006;187:198-201.

Gettler SL, Fung MA. Efficacy of treatments for mycosis fungoides and Sezary syndrome: nationwide survey responses. Dermatology Online Journal 2005;11(3):6.

Kang SH, Fung MA, Gandour-Edwards R, Reilly D, Dizon T, Grahn J, Isseroff RR. Heat shock protein 27 is expressed in normal and malignant human melanocytes in vivo. Journal Cutaneous Pathology 2004; 31(10):665-71.

McNutt NS, Fung MA. More about panniculitis and lymphoma. Journal Cutaneous Pathology 2004; (4):297-9.

Fung MA. Terminology and management of dysplastic nevi: responses from 145 dermatologists. Archives Dermatology 2003; 139(10):1374-5.

Fung MA, Murphy MJ, Hoss DM, Berke A, Grant-Kels JM. The sensitivity and specificity of "caterpillar bodies" in the differential diagnosis of subepidermal blistering disorders. American Journal Dermatopathology 2003;25(4):287-90.

Fung MA. The clinical histopathologic spectrum of so-called "dermal hypersensitivity reactions," a non-specific histologic diagnosis that is not very helpful in clinical practice: and the concept of a "dermal hypersensensitivity reaction pattern. Journal of the American Academy of Dermatology 2002;47:898-907.

Fung MA, Murphy MJ, HOSS DM, Grant-Kels JM. Practical evaluation and management of cutaneous lymphoma. Journal of the American Academy of Dermatology 2002;46:325-357.

Gettler SL, Fung MA. Indurated plaques on the arms of a 52 year-old man: cutaneous reaction to phytonadione injection. Archives of Dermatology 2001;137:957,962.

Fung MA, LeBoit PE. Incidence of penile lichen sclerosus. [letter] Journal of the American Academy of Dermatology 2001;44;878-879.

Fung MA, Berger TG. A prospective study of acute-onset steroid acne associated with administration of intravenous corticosteroids. Dermatology 2000;200;43-44.

Fung MA, LeBoit PE, Maibach HI. Coalescing green and yellowpapules on the feet: focal bilirubin deposition (cutaneous bile pigment deposition). Archives of Dermatology 2000;136;113.

Fung MA. Book review. American Journal of Dermatopathology 1999;21;104-105.

Fung MA, LeBoit PE. Light Microscopic criteria for the diagnosis of early vulvar lichen sclerosus: a comparison with lichen planus. American Journal of Surgical Pathology 1998;22:473-478.

Fung MA, Reed JA. HIV/Case Histories: Diagnostic problems: eosinophilic folliculitis. HIV Patient Care and STDs 1997;11:451-452.

Fung MA, Geisse JK, Maibach HI. Airborne contact dermatitis to metaproterenol in a respiratory therapist. Contact Dermatitis 1996;35:317-318.

To schedule an appointment and to see if Dr. Fung is accepting new patients please call: 916-734-6111