Thomas Davis, MD, FAAD

Vice-President, Education
Board-Certified Dermatologist & Dermatopathologist
Dr. Thomas Davis

Dr. Thomas Davis is board certified in dermatology and dermatopathology by the American Board of Dermatology and the American Board of Pathology. He received his medical degree from the University of Texas Medical School in San Antonio, after which he completed his post-graduate and residency training at Wilford Hall USAF Medical Center in Lackland, TX, and dermatopathology fellowship at New York University Medical Center, NY.

After practicing dermatology and dermatopathology in the Air Force for ten years and serving as Vice-Chairman of the Division of Dermatology at Wilford Hall Medical Center, Dr. Davis entered the private practice of dermatopathology in San Antonio for 25 years. During that time, he was actively involved in teaching dermatology and pathology residents from both the military training programs and UT Health in San Antonio.

In 2018, Dr. Davis relocated to Dallas to be closer to family and continues to be actively involved in resident education. In addition to holding several adjunct faculty appointments at training programs in Texas, he regularly teaches dermatopathology at several residency training programs around the country. He has served as a faculty member at AAD meetings over the years and has also been an invited faculty participant at many symposia focused on dermatopathology.

His passion is resident education, and he is grateful to spearhead Sagis Diagnostics’ efforts to be a key leader in dermatopathology training for residents across the country.


Fellowship Training

New York University Medical Center
New York, NY

Residency Training

Dermatology & Internal Medicine
Wilford Hall USAF Medical Center
San Antonio-Lackland, TX

Medical School

The University of Texas Medical School at San Antonio
San Antonio, TX


Baylor University
Waco, TX

Board Certifications


The American Board of Dermatology and The American Board of Pathology

Diplomat of FLEX


The American Board of Dermatology


American Academy of Dermatology

Bexar County Medical Society

American Society of Dermatopathology

Texas Dermatological Society

Noah Worcester Dermatological Society

Texas Medical Association

Texas Society of Pathologists

International Society of Dermatopathology

San Antonio Dermatologic Society

Research & Publications

Dr. Davis has performed research in such topics as accutane induced psoriasis, variants of neorfollicular hamartoma, atrophic granuloma annulare, and variants of non-neural granular cell tumors, to name a few. He has published in various dermatology and pathology journals including Journal of Investigative Dermatology, The Journal Association of Military Dermatologists, The Journal of Cutaneous Pathology and The American Journal of Pathology.

Dr. Davis has also given lectures at The American Society of Clinical Pathologists, The American Academy of Dermatology’s Annual Meeting, Society for Investigative Dermatology Meeting, American Academy of Dermatology Meeting and the Spring Texas Dermatologic Society Meeting. His research contributions include ongoing clinical investigations such as, observing the clinical, histopathologic and immunofluorescence findings in patients with Pruritic Urticarial Papules and Plaques of Pregnancy (PUPPP).

  • Davis TL, Hayes TJ.  Accutane Induced Psoriasis:  A Case of Koebernization.  Journ Assoc Mil Dermatol 27-31, Spring 1987.
  • Davis TL, Lyde CB, Davis BM, Sontheimer, RD.  Perturbation of Experimental Ultraviolet Light-Induced Erythema by Passive Transfer of Serum from Subacute Cutaneous Lupus Erythematosus Patients.  Journ Invest Dermatol  92:573-577, 1989
  • Davis TL, Trapp CF, Grimwood RE.  Exogenous Ochronosis Occurring in a Male.  J Cutan Pathol  17:290, 1990.
  • Davis TL, O’E, George TF.  Neurosebaceous Hamartoma:  A Variant of Neurofollicular Hamartoma.  J Cutan Pathol  17:291, 1990.
  • Davis TL, McCollough ML.  Sclerosing Panniculitis Revisited:  A Report of Five Additional Cases.  J Cutan Pathol  18:364, 1991.
  • McCollough ML, Davis TL.  Atrophic Granuloma Annulare.  J Cutan Pathol  18:379, 1991.
  • Meffert JJ, Kennard CD, Davis TL, Quinn BD, Intradermal nodular fasciitis presenting as an eyelid mass.  Int J Dermatol 1996 Aug; 35(8):548-52.
  • Dalton SR, Fillman EP, Altman CE, Gardner TL, Davis TL, et al.  Atypical Junctional Melanocytic Proliferations in Benign Lichenoid Keratosis.  Human Pathol 2003 Jul; 34(7):706-9.
  • Yeh I, Tran DT, Davis TL, Argenyi ZB.  An infiltrative variant of non-neural granular cell tumor: a case report.  J Cutan Pathol  2009 Oct;36(Suppl 1):46-51.  [PubMed]
  • Wagner B, Tan C, Barnes JL, Ahuja S, Davis TL, Gorin Y, Jimenez F.  Nephrogenic systemic fibrosis: evidence for oxidative stress and bone marrow-derived fibrocytes in skin, liver, and heart lesions using a 5/6 nephrectomy rodent model.  Am J Pathol 2012 Dec; 18(6): 1941-52.  doi: 10.1016/j.ajpath.2012.08.026. Epub 2012 Oct 4.
  • Chastant LM, Davis T, Libow L  Black spot poison ivy:  a report of three cases with clinicopathologic correlation.  JAAD Case Reports 2018 March; 4(2):  140-142.
  • Lenz B, Aldridge C, Davis T.  Periungual Finger-Like Projections:  Challenge.  Am J Dermatopathology 2018, June.  PMID  29933312
  • Davis TL, Lyde C, Davis BM, Sontheimer RD.  Perturbation of Experimental HV-B Induced Erythema by Passive Transfer of Serum from Subacute Cutaneous Lupus Erythematosus (SCLE) Patients. Journ Invest Dermatol  86:470, 1986.
  • Perturbation of Experimental HV-B induced Erythema by Passive Transfer of Serum from Subacute Cutaneous Lupus Erythematosus (SCLE) Patients. — Presented at the Society for Investigative Dermatology Meeting, May 1986. — Presented at the American Academy of Dermatology Meeting, December 1986
  • Heibel H, Brown M, Davis T.  “ A Survey of Dermatologists’ Practices in Completing the Skin Biopsy Requisition Form in the Era of Electronic Medical Records.” — Presented at the Spring Texas Dermatologic Society Meeting in 2019
  • Served as a faculty member for “Clinico-Pathologic Correlation in Dermatopathology” – A full day seminar given at the American Society of Clinical Pathologists National Fall and Spring Meetings from October 1989 until January 1996.
  • Served as a faculty member for “Dynamic Dermatopathology” – A three day regional educational course sponsored annually by the American Society of Clinical Pathologists from April 1990 – January 2003.
  • Faculty Member, Gross and Microscopic Symposium, American Academy of Dermatology Annual Meeting, 1993 – 1996.
  • Faculty Member, various Dermatopathology courses, American Academy of Dermatology Annual Meeting, 1993 – Present.