San Francisco Dermatology

Dermatologists located in Union Square, San Francisco, CA

At San Francisco Dermatology in downtown San Francisco near Union Square, Michael J. Dans, MD, PhD, and his team offer the care patients need for healthier, and better appearing  skin. The providers develop effective treatment plans based on scientific evidence and their many years of experience, so patients can feel confident in the care they receive. The team cares for a wide range of skin conditions such as rosacea, psoriasis, skin cancer, acne, eczema, and warts, using the latest medical treatments to improve these conditions and relieve uncomfortable or unsightly symptoms.

Dr. Dans and his team also provide surgical dermatology treatment to carefully remove moles, warts, skin cancer, and other growths. They take a conservative approach, leaving as much healthy skin in place as possible to minimize scarring.

In addition to medical and surgical care, patients at San Francisco Dermatology can receive the latest aesthetic treatments, including injectables such as BotoxⓇ and Juvèderm. These cosmetic therapies help patients feel more confident in their appearance by erasing signs of aging and giving skin a more youthful appearance.

With comprehensive services and a welcoming, relaxing environment, San Francisco Dermatology offers safe and effective care for healthy, beautiful skin.


490 Post Street, Suite 320, San Francisco, California 94102 Phone (415) 781-1932 • Fax (415) 781-1947

We are conveniently located in the 490 Post Street medical building, which is on the corner of Post and Mason Street and is one block from Union Square in downtown San Francisco. The main entrance to the building is on Post Street between Mason and Powell.

Parking Options:

  • • Our building has valet parking. The entrance is on Mason Street, between Post and Sutter. The rate is about $15 per hour.

  • •The Union Square garage is one block from our building. Enter on Post between Powell and Stockton. The rate is about $3 per hour.

  • •We also recommend a lot one block west of our office, on Taylor between Post and Sutter. The rate is about $5 per hour. To enter this lot, take Post St., turn left on Taylor and make an immediate left turn into the lot in an alley called Cosmo Pl.

  • There are also various other lots within a few blocks of our office, including the Sutter-Stockton garage, which is generally the least expensive.

Public Transportation Options:

The office is easily accessible by public transportation, such as BART (, bus, cable car and light rail ( From BART, exit at Powell Street, walk up Powell toward Union Square, turn left on Post Street, and the entrance to the building will be on your right hand side toward the end of the block.



patient portal





    Our online patient portal allows both new and existing patients to email us, schedule or request appointments, fill out medical history forms, update personal information, check lab results and more.

    If you are a current patient and need to be seen urgently and cannot find an appointment soon enough on the portal, then please call us or click "request an appointment" in the portal. We will get back to you, usually within one business day.

    Patient Portal





Major Insurances Accepted

We do not accept all plans for these insurance companies, so please call your insurance company to verify if we are in network with your particular plan. Thank you!

Anthem Blue Cross Blue Shield
Brown & Toland
GWH-Cigna (formerly Great West Healthcare)
Meridian Health Plan
United Healthcare

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Words from our patients

  • Google

    "Dr. Dans is a very knowledgeable, and professional, yet personable doctor. I can ask many questions, and he answers them with care."

    Emiko K.
  • Google

    "I've been coming here for years and can't recommend highly enough the knowledge, skill, and excellent patient care that both Dr. Dans and Dr. Reisman have provided."

    Martin H.
  • Google

    "Excellent, caring dermatological service, with an attentive clerical team. I have relied on the expertise of Dr. Dans for years, and recommend his practice."

    Al Z.
  • Google

    "Got an appointment reasonably quickly, staff is efficient and pleasant, and Dr. Reisman took time and answered my questions."

    Kaye R.
  • Google

    "I highly recommended both these doctors and also the staff. Everyone is courteous , professional, and knowledgeable."

    Helen G.
San Francisco Dermatology
490 Post St
Suite 320
San Francisco, CA 94102