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Walter K. Nahm, MD, PhD

Walter K. Nahm, M.D., Ph.D. is board-certified in both Dermatology and Dermatologic Micrographic Surgery. Dr. Nahm completed his dermatology specialty residency training at Boston University School of Medicine, where he was honored as chief resident.

Dr. Nahm's medical school training was at Baylor College of Medicine in Houston, TX, where he completed the prestigious combined M.D.-Ph.D. Medical Scientist Training Program. He received his Ph.D. in the field of neuroscience for which his work was recognized with the Young Investigator of the Year Award. 

Dr. Nahm is also fellowship trained in Mohs Micrographic Surgery under the auspices of the American College of Mohs Surgery at the Veterans Administration (VA) West Los Angeles Medical Center and the University of California, Los Angeles (UCLA) School of Medicine. He also completed fellowship training in laser, cosmetic and liposuction surgery under the certification of the American Academy of Cosmetic Surgery at the UCLA School of Medicine.

Dr. Nahm specializes in the Mohs Surgery technique, which is the most precise and effective manner to treat skin cancer. He is the past director of Mohs at University of California, San Diego (UCSD), School of Medicine. His other specialties include laser and cosmetic surgery. As a fellow of the American Academy of Cosmetic Surgery and the American Society for Dermatologic Surgery, he has expertise in tumescent liposuction and eyelid and face-lift surgery. In addition, Dr. Nahm has extensive experience in laser therapy for wrinkles, brown spots, blood vessels, birthmarks and vascular anomalies. Other areas of expertise include Botox ®, injectable fillers (e.g., Restylane®, Radiesse™, Juvederm®), fat transfer, chemical skin rejuvenation, leg vein treatment (sclerotherapy) and acne scar treatment. He has performed extensive research on intense pulsed light (IPL™) technology and the Thermage™ device (allowing for the non-surgical facelift) and was honored for his work. He is also a director of a Joint Commission approved ambulatory surgery center, where he also performs many of his surgeries.

As an assistant clinical professor of dermatology at UCSD, Dr. Nahm teaches both medical students and residents. He is also on the teaching faculty for the residents of Scripps Mercy Hospital. He has also authored numerous scientific articles and chapters (over 60) in the field of dermatology, cellular physiology, cosmetic surgery, laser surgery and skin cancer. He has also given many national lectures and surgical courses on such topics.

Dr. Nahm is actively performing clinical studies and has participated in over 220 clinical studies dealing in the development of novel medications and treatments for psoriasis, eczema, toenail fungus, feet fungus, wrinkles, local fat deposition, rosacea, acne, hidradenitis suppuritiva, necrobiosis lipoidica diabeticorum, neurofibromatosis, prurigo nodularis, and hair loss.

Dr. Nahm has a Ph.D in neuroscience and with this background has been a pioneer in neuronally-based receptor physiology in skin cells. His work was specifically recognized by the Society of Investigative Dermatology and the American Academy of Dermatology. He has served as past presidents of the San Diego Dermatological Society and San Diego Society for Dermatologic Surgery.

University Dermatology Group


UDG offers a full spectrum of dermatological services to include some highly specialized subspecialties of dermatology. Traditional cryotherapy, photodynamic therapy, microscopy, excisional surgeries, and the ability to do immediate on-site pathological evaluation for suspicious growths are all performed routinely.

Specialized training has enabled our facility to do procedures such as Mohs micrographic surgery for skin cancers, extensive patch testing for allergic reactions of the skin, and narrow-band ultraviolet laser therapy for chronic conditions such as psoriasis and vitiligo. Medical care for all ages is available at UDG. Routine and complex pediatric, adult, and geriatric care to include patients in local nursing homes is available. With many therapeutic options, it is our goal to help educate and guide you as to which traditional or specialized treatment or procedure best fits your needs.

Affiliations and privileges with hospitals from southeast to north county San Diego such as Scripps Mercy Hospital, Sharp Chula Vista Hosptial, Sharp Memorial Hospital, Sharp Coronado Hospital, Sharp Grossmont Hosptial and Alvarado Hospital allow us access and continuity of care in the event of a hospitalization or a dermatological condition that arises during a hospital stay.

The practitioners and staff at the UDG pride themselves in giving back to the community of San Diego. Through frequent seminars at local hospitals, recreation centers, public schools, and health fairs, we have been able to educate our patients and the community. Through the coordinated efforts of Project Access, we have additionally been able to reach out to individual patients in need of but without healthcare.

Laser and Cosmetic Treatments

UDG offers a number of cosmetic procedures which can address the face, eyes, and body. Improvement in skin tone, texture, and the appearance of fine lines and wrinkles can all be accomplished with the latest advances in cosmetic and laser surgery. With recent developments made in laser surgery, and a change in how laser energy may be delivered, it is now possible to maximize results and minimize the down time.

Lasers for wrinkles, veins, facial redness, brown spots, tattoos, and scar revision are all available and most times can be done the same day. Non- surgical facial tightening (Thermage) using radio frequency is an attractive alternative to a face lift or eyelid surgery for patients who have reservations about going ‘under the knife’.

Combination treatments with Botox and Fillers such as Restylane and Juvederm offer quick and exciting facial rejuvenation that can be seen almost immediately. Botox to relax the wrinkles on the forehead and around the eyes, in combination with fillers to the cheeks and around the mouth can turn back the hands of time in a simple and comfortable single outpatient office procedure.

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