Our Providers


Robert J. Roth, M.D.Dr. Roth received his B.A in Arts and Sciences from West Virginia University and both the D.D.S and M.D. degrees from the University of Pittsburgh Dental and Medical Schools. He interned at Madigan General Hospital and was a Resident and Chief Resident in Dermatology at Stanford. Dr. Roth was a Captain in the U.S. Army Medical Corps, and he is currently Adjunct Professor of Dermatology at Stanford. He is Board Certified in Dermatology.


Shurong Chang, MD PhDDr. Chang received her B.S. with thesis honor distinction from Peking University (also known as Beijing University) in Beijing, China. After obtaining her M.D. and Ph.D. degrees with honors from the University of Texas Southwestern Medical Center at Dallas, Dr. Chang moved to Northern California to join her family. She completed her internship in preliminary Internal Medicine at California Pacific Medical Center in San Francisco, followed by residency in Dermatology at University of California Davis Medical Center. Dr. Chang has published in high-profile journals including Cell and Proceedings of National Academy of Sciences. Dr. Chang is fluent in English and Mandarin.

 Curriculum Vitae Dr. Shurong Chang, MD PhD


Sunil S. Dhawan, M.DDr. Dhawan is a graduate of San Francisco State University and the University of Southern California School of Medicine. He completed an internship and residency in Internal Medicine at U.C.S.F followed by a residency in dermatology at Mount Sinai Hospital in Miami, where he was also Chief Resident. He is Board Certified in Internal Medicine and Dermatology. Dr. Dhawan is a Fellow of the American College of Physicians and the American Academy of Dermatology. He also is an Assistant Adjunct Professor at the Stanford University, Department of Dermatology, where he teaches dermatology residents and medical students. In addition to English, he speaks Hindi.

 Curriculum Vitae Dr. Sunil S. Dhawan, M.D


Olivia Martinez, MSN, FNP-COlivia joined Center for Dermatology in 2016. She is a board certified Nurse Practitioner. Prior to joining Center for Dermatology, she worked as a nurse practitioner in primary care at a community health based clinic in Bakersfield, California for 18 months. She also has a diverse medical background working as a registered nurse for 9 years in medical-surgical and emergency care departments.

She earned a Master of Science degree in Nursing from Holy Names University in Oakland, California, and a Bachelor of Science Nursing degree from California State University in Bakersfield, California. She is also a member of the American Academy of Nurse Practitioners. She has a deep passion in the field of dermatology, and provides care for a variety of cosmetic and medical dermatology conditions. She looks forward to assisting you and your family with all your skin care needs.


Patrizia A. Visconti, P.A.-CPatrizia Visconti is a California-licensed Physician Assistant board certified by the National Commission on Certification of Physician Assistants (NCCPA). Patrizia graduated from the University of Florida, receiving a Bachelor of Science degree in Biology. She then attended Barry University in St. Petersburg, FL where she graduated Magna Cum Laude from her dual degree in Master of Clinical Medical Science (CMS) and Physician Assistant Certification in 2016. She has been practicing Dermatology ever since.

Physician Assistants (PAs) are healthcare providers who practice with the collaboration of physicians, without requiring direct supervision. As a PA working at Center for Dermatology, Cosmetic and Laser Surgery, Patrizia offers various medical, surgical, and cosmetic dermatologic services. She is a fellow of the Society of Dermatology Physician Assistants and the American Academy of Physician Assistants.

Being born in Venezuela, Patrizia is fluent in Spanish. She resides in Fremont, CA where she enjoys hiking, cooking, and spending time with her family.


Olivia Martinez, MSN, FNP-CDr. Gladstone went to secondary school at Western Reserve Academy in Hudson, Ohio where he independently studied fetal surgery and development and graduated with Honors in History and was elected to the Cum Laude Society. He completed a combined Bachelors's and Master's Degree Program at Tufts University and the Fletcher School of Law Diplomacy and graduated with Summa Cum Laude Honors on both his Degree and Thesis. He earned his medical degree from the University of Rochester.  During Medical School, he received fellowships to study the late effects of the Atomic Bomb in Hiroshima, Japan as well as treating Burn Patients in Haifa, Israel.

Dr. Gladstone then completed his Surgical Internship at the University of California, San Francisco.  He completed a Research Fellowship at UCSF investigating the role of Growth Factors in wound healing under the mentorship of Dr’s Robert Jackler, MD and Robert Schindler, MD in the Department of Otolaryngology-Head and Neck Surgery.  He then trained in Otolaryngology-Head and Neck Surgery at the University of Washington as well as Dermatology.  He completed an NIH fellowship at the University of Washington focusing on the use of virtual reality in dermatologic surgery.  Dr. Gladstone then completed a prestigious UCLA affiliated Mohs Surgery, Reconstruction and Cosmetic Surgery Fellowship under the Direction of acclaimed Dermatologic Surgeon, Ronald L. Moy, MD. Dr. Gladstone was a Clinical Instructor at the UCLA School of Medicine.  Dr. Gladstone is Board Certified in Dermatology.

Dr. Gladstone has lectured worldwide on his cosmetic and reconstructive techniques.  He has been the editor of educational videos on both cosmetic procedures and reconstruction of the American Society for Dermatologic Surgery, the specialty’s primary surgical society.  He was the Program Chair of the 2015 Annual Meeting.  He has been the past Director of the Advanced Cosmetic Surgery Course at the American Academy of Dermatology Annual Meeting.  He has served on Master Reconstruction Panels here and abroad and was selected for the prestigious Iron Surgeon Competition.  Because of his experience, Dr. Gladstone has often been asked to be an expert witness in dermatologic surgery malpractice cases.

Dr. Gladstone has been active in his professional societies.  He has been on the Board of Directors and the past President of the San Francisco Dermatology Society as well as the Board of Directors and past President of the Pacific dermatology Association, the largest regional dermatology society in the United States. He was also on the Board of Directors of both the San Mateo Division and the California Division of the American Cancer Society.  In 2015, he was elected to serve on the Board of Directors of The American society of Dermatologic Surgery, the specialty’s leading surgery and cosmetic organization. 

Dr. Gladstone has 100 publications on Moh’s surgery, reconstruction, and aesthetic procedures including 30 chapters, and is the co-editor of a well-received book on cosmetic procedures that has been translated into several languages.
Dr. Gladstone feels fortunate to be in the field of medicine, and privileged to treat patients.  It is important for him to give back.  For 11 years, he volunteered at the student-run Stanford homeless clinic in Menlo Park.  He is the co-founder with Murad Alam, MD of Northwestern of the Blade and Light Society, and is the President of Blade and Light International. This is a nonprofit organization (www.bladelight.org) that send teams of fellowship-trained Mohs surgeons abroad to perform volunteer Mohs surgery and reconstruction.

Prior to medical school, Dr. Gladstone was an award-winning photojournalist and sports editor in Colorado.  That two-dimensional visual design background has served as a foundation for his three-dimensional visit in reconstruction and aesthetic procedures.  As a former competitive athlete, he understands the arbitrariness of the aging process. In his spare time, he plays tennis, squash, skis, practices the classical guitar, shoots photos, and continues to write. 



Olivia Martinez, MSN, FNP-C


Undergraduate/Medical School:

University of Missouri – Kansas City, Combined BA/MD Program, 2009-2016




University of Mississippi Medical Center, Internal Medicine, July 2016-June 2017


University of Mississippi Medical Center, Dermatology, July 2017-June 2020

Curriculum Vitae CAROLINE DOO, MD