Our Providers

Dr. Jeffrey T. Bortz

Dr Bortz Dr. Jeffrey T. Bortz received a Bachelor of Science degree in biology, with Distinction, at Iowa State University. He then completed his medical school training at the University of Iowa, where he had the opportunity to participate in the Senior Honors Research Fellowship Program and was elected to the College of Medicine Continuing Medical Education Committee.

After completing an internship in internal medicine at Boston University, Dr. Bortz completed his residency training and served as Chief Resident at the Stanford University Department of Dermatology. Following this, he completed a one year skin cancer surgery fellowship in Australia, which included comprehensive training in Mohs micrographic surgery, surgical reconstruction, and skin cancer management. Dr. Bortz is one of the few fellowship-trained Mohs surgeons in the Bay Area. He is also an Adjunct Assistant Clinical Professor of Dermatology at Stanford University, and regularly lectures and instructs Stanford Dermatology residents regarding skin cancer surgical techniques and skills.

Over the past fifteen years, Dr. Bortz has performed over 15,000 Mohs Micrographic Surgery cases and surgical reconstructions. He receives patient referrals from physicians throughout the Bay Area, and is highly regarded as an expert in his specialty.

Dr. Bortz’s credentials include:

Board Certified, American Board of Dermatology
Fellow, American College of Mohs Micrographic Surgery
Member, American Society of Dermatologic Surgery

Dr. Bortz’s staff appointments include:

Adjunct Assistant Professor and former Chief Resident, Stanford University Medical Center Department of Dermatology, Stanford, CA
Active Staff, John Muir Medical Center, Walnut Creek, CA

Patricia Loo, PA-C

Patricia Loo, PA-C received a Bachelor of Science degree in Biopsychology with honors at the University of California, Santa Barbara. Patricia completed her Master’s degree in Physician Assistant Studies from the Arizona School of Health Sciences in 2006. Patricia’s primary areas of interest include the diagnosis and treatment of skin cancer. She joined our practice in 2006.

Patricia's credentials include:

Nationally Certified, National Commission on Certification of Physicians Assistants
State Licensed, Medical Board of California
Member, Society of Dermatologic Physician Assistants

American Society for Dermatologic Surgery

Accreditation Association for Ambulatory