State-of-the-art, personalized skin care
from experienced professionals
“A regular skin checkup can literally save your life.” Jennifer Krasnoff, MD

Dr. Bertha Lin values a dynamic patient-physician relationship; and works side by side with her patients in order to understand their medical history and develop a treatment plan that is personalized and successful. 

In addition to her expertise in both medical and surgical dermatology, Dr. Lin specializes in the treatment of skin cancers. She is highly trained in Mohs Micrographic surgery and post-surgery reconstruction.

A native of Ann Arbor Michigan, Dr. Lin graduated from the University of Michigan Medical School where she received a Howard Hughes Medical Institute Research Scholarship at the National Institutes of Health.  After receiving her medical degree, Dr. Lin completed an internship and residency in Internal Medicine at Massachusetts General Hospital; as well as a dermatology residency at the Mayo Clinic in Rochester Minnesota and a dermatologic and Mohs micrographic surgery fellowship at the University of Texas Southwestern Medical Center. 

Dr. Lin has a particular interest in physician training, participating on the faculties of George Washington University Medical School, University of Minnesota Medical School and Wayne State University Medical School; and teaching internal medical residents at St. John’s Hospital in Detroit, Michigan.  She is also devoted to patient education, and such initiatives as free skin cancer screening clinics in local communities.

Prior to joining Dermatology Associates of the Bay Area, Dr. Lin worked in academic, private and multispecialty group practices. 

Professional organizations:

  • Diplomat - American Board of Dermatology (ABD)
  • Fellow - American Academy of Dermatology (AAD)
  • Fellow - American College of Mohs Surgery
  • Fellow - American Society of Dermatologic Surgery
  • Reviewer - Dermatologic Surgery Journal




Petaluma Office
165 Lynch Creek Way
Petaluma, CA 94954
 M-F, 8:00am-5:00pm
(707) 762-5531
Fax: (707) 762-5976



Hercules Office
500 Alfred Nobel Dr., Ste. 245
Hercules, CA 94547
M-F, 8:00am-5:00pm
Open Saturday for aesthetic services
 (510) 741-7418
Fax: (510) 741-7456


Billing office
Fax: 510- 741-7493

At Dermatology Associates of the Bay Area, our board-certified dermatologists serve patients at our Petaluma and Hercules offices. We are committed to the highest standards, and we offer a full range of cosmetic, medical, and surgical dermatology procedures, as well as quality skin care products.

Dermatology Associates of the Bay Area
165 Lynch Creek Way | Petaluma, California 94954 | Phone: (707) 762-5531 | Fax: (707) 762-5976
500 Alfred Nobel Drive, Suite 245 | Hercules, California 94547 | Phone: (510) 741-7418 | Fax: (510) 741-7456