Welcome to NorCal Dermatology

Our dermatologists and staff at NorCal Dermatology are committed to providing you the very best comprehensive skin care in Northern California. Dr. Khanh Truong and Dr. Henry DeGroot are Board-certified Dermatologists and each has over 20 years of experience in medical, surgical, and cosmetic dermatology.

The doctors and staff at Norcal Dermatology look forward to meeting all your skin care needs in the counties of Sonoma, Napa, Mendocino and Humboldt.

We accept most insurances. Come see us today!


Introducing 2 new services!

ULTHERAPY - the latest noninvasive skin tightening technology for tighter more vibrant skin!

REVLITE SI- a new-generation laser technology for effectively removing tattoos!


Check back soon for upcoming specials.


View our gallery of actual patients

Meet Our Staff

  • Dr. Khanh Truong

    Born in Vietnam, Dr. Truong grew up in Louisiana where she received her medical degree from Louisiana State University School of Medicine.Read More

  • Dr. Henry DeGroot

    Dr. DeGroot was raised in Chino, California. After high school he served in the United States Marine Corps both in the states and abroad.Read More


  • "Dr. DeGroot is great. He saved my life by looking at my face, seeing a cancerous lesion and removing it (not on the same day). I was not even his patient at the time, my husband was. On my last visit he removed three suspicious moles. He is always professional, pleasant, and on time."
    Sally G.
  • "This place is awesome. I have been coming here for a little over a year now and everyone in there is super friendly and helpful, especially the front desk ;) I go for the acne treatments and they have really helped clear up my face. Highly recommended. Best dermatologist I have been to in the northbay!"
    Darrell S.
  • "I am a new patient with NorCal Dermatology, and I was very impressed with the staff, office, and friendliness of everyone. I went in for a full body exam, and left as a laser hair removal patient. It is something I have wanted to do for years, and the office got a brand new laser, so I had to give it a try. Dr. Truong is so sweet, professional and has a great bed side manner. If you are in need of a Great Dermatologist, I highly recommend her. I am a fan!! Thanks so much to the whole staff..."
    Ken P.

Contact Us

Our Location

Find us on the map

Hours of Operation

Our Regular Schedule


9:00 am-4:30 pm


9:00 am-4:30 pm


9:00 am-4:30 pm


9:00 am-4:30 pm


9:00 am-4:30 pm






           PLEASE CHECK OUR OUR HOLIDAY SPECIALS AND NEW PRODUCTS IN OFFICE!                               ************************************************************************

We will be CLOSED for the holiday starting Wednesday November 24th at 12:00pm through Sunday November 28th. We will resume business as usual Monday November 29th at 9:00am.