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At Dermatology Associates, we are committed to excellence in skin care. Our clinic is defined by rigorous practice standards, a board certified, highly trained physician team and state-of-the-art facilities and equipment. As leaders in the dermatology field, we pride ourselves in providing our patients with personalized, superior care.

Our extensive services include medical and surgical dermatology, as well as cosmetic, aesthetic treatment and skin care. We are highly trained in Mohs surgery, the gold standard for the most common skin cancers.  We diagnose and treat common skin problems such as acne, eczema and psoriasis as well as complex conditions such as connective tissue diseases, melanoma and other skin cancers and precancerous lesions (actinic keratoses).

Our comprehensive cosmetic approach to the aging face includes Botox 

Find ongoing promotions and discounts on a range of aesthetic services and products. Our promotions change regularly. We look forward to seeing you!

What's New


Dear All,

Spending the day in Napa is almost always a good day.

Saturday was an exceptional day. Patients, volunteers, physician colleagues, big pharma and the wonderful folks from the NPF came together to cycle and raise money for psoriasis and psoriatic arthritis research and education. The feeling of community was overwhelming. Cycling 60 miles through aromatic wineries and picturesque hills is heaven.

This was a huge success for NPF. We were the top fundraisers so thank you for making this happen. Thank you for supporting us with your words and donations and helping us contribute to this amazing organization.

Dr. Homa and Dr. Krasnoff

Upcoming Event:  Saturday, June 18, 2016 - Cycle4Psoriasis Join Our Team click here


Everyday, the staff at Dermatology Associates of the Bay Area is helping patients battle psoriasis.  Using creative ways to combine topical therapy, systemic therapy and UV light, we are making a tremendous difference in patients' lives...Read More


Rosacea Update

New research, treatment and resources make it manageable. Read more

We encourage you to contact us whenever you have an interest or concern about our services.
Contact us with the form below

Please do not submit any Protected Health Information (PHI).



Our Office will be closed Monday, May 30th, in observance of Memorial Day

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
phone: 510-741-7299
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