Our Providers

Dr. Jeffrey T. Bortz

Dr BortzDr. 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 20,000 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

Dr. Bortz's Recent Awards include

  • Patient's Choice Honoree- 5 consecutive years
  • Super Doctors Honoree (selected by physician peers as one of California's top 5% physicians)- 2011 & 2012

Dr. Hina Ahmad

JakeDr. Hina Ahmad was born and raised in Chicago, IL. She completed her undergraduate studies at Loyola University Chicago, where she graduated magna cum laude with a bachelors degree in Biology in 2004. She decided to stay in her hometown of Chicago and attended medical school at Rush University Medical Center, where she graduated in 2008. She stayed at Rush University Medical Center to complete both her internship in Internal Medicine and residency in Dermatology, where she served as chief resident.

After completing residency in 2012, Dr. Ahmad pursued a rigorous, one year Mohs micrographic surgery fellowship with Dr. Richard Bennett in Santa Monica, CA. Her training focused on complex skin oncology which included Mohs for melanoma, basal cell carcinoma, squamous cell carcinoma, dermatofibrosarcoma protuberans, merkel cell carcinoma, sebaceous carcinoma, microcystic adnexal carcinoma, atypical fibroxanthoma, malignant fibrous histiocytoma, leiomyosarcoma, perineural and intravascular tumors, and other rare skin tumors. Her training with Dr. Bennett also concentrated heavily on reconstructive surgery, where she often had the opportunity to work with and teach rotating Dermatology and Plastic surgery residents.

Additionally, as part of her fellowship, she worked at the University of Southern California, helping teach Mohs and reconstructive surgery to residents and medical students. She also saw and treated patients at the hidradenitis suppuritiva clinic at the University of California Los Angeles, helping perform curative excisions for this often difficult to treat disease. As a result of her extensive training, Dr. Ahmad is one of the few fellowship trained Mohs and dermatologic surgeons in the East Bay. She has been performing Mohs and treating general Dermatology patients in Walnut Creek since 2013.

Her clinical interests include Mohs micrographic surgery, reconstructive surgery, complex cutaneous oncology, and skin cancer screening and prevention.

Patricia Loo, PA-C

Patricia LooPatricia 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

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East Bay Skin Cancer Center | 355 Lennon Lane, Suite 255 | Walnut Creek, CA 94598 | Tel: 925-932-7704 | Fax: 925-932-7752 | www.dermclinic.com