COVID-19 (Coronavirus) Advisory:

We are open for appointments, biologic and allergy injections at our regular business hours.  We have become a hands-free office where you are not required to touch any surfaces.  Masks are required in accordance with county regulations.

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Welcome to North Bay Allergy and Asthma Associates, Inc

North Bay Allergy and Asthma Associates, Inc in Napa and Sonoma was founded in 1989 by Larry S. Posner. Our physicians and staff at NBAAA strive to deliver excellent patient care and improved quality of life for our patients in the specialized fields of Allergy and Clinical Immunology. Our clinical practice focuses on educating our patients about allergic and immunological diseases. It is an exciting time to be in our field as there are many recent groundbreaking research and treatments in allergy and asthma. We look forward to taking care of you!

Pollen Count: May 22, 2020

Airborne sampling weekly from the roof of the
Queen of the Valley Medical Center, Napa, CA.

  • Tree Pollen:   14- low
  • Grass Pollen: 35- moderate
  • Dominant species: Oak (9), Olive (4)
  • Outdoor mold: Low

Pollen Scale:

  • 1-15:  Low (sensitive people affected)
  • 16-40:  Moderate (most allergic people affected)
  • over 40: High (all sensitized people affected)

The pollen has just reached its peak, allergy symptoms should improve each week through June.


What’s Happening:

May  29, 2020

This grass season has peaked and was a bit milder than average. This is a bit of relief following our record breaking tree pollen season in February through April.

Most people should remain on their meds until the Fourth of July, when pollen deeps to a nadir.

NBAAA is proud to have had the priviledge to take care off our Napa and Sonoma communities for the past 31 years!    

We are having our front desk in Napa reinstalled with erogonomics in mind this weekend.  Have to take care of our special ladies at NBAAA.

We continue to see patients with a priority on your safety.  Options available for in-person visits, Telehealth and phone consultations as well as advice  through our patient portal for established patients..

Be safe!



Monday - 9:00 am - 5:00 pm

Tuesday - 9:00 am - 5:00 pm

Wednesday - 9:00 am - 7:00 pm

Thursday - 9:00 am - 5:00 pm

Friday - 9:00 am - 12:00 pm


Napa Allergy Shot Hours

Monday - 9:00am - 12:00pm; 2:00pm - 6:00pm

Tuesday - 9:00 am - 12:00pm

Wednesday - 2:00 pm - 7:00 pm

Thursday - 2:00 pm - 6:00 pm

Friday - 9:00 am - 12:00 pm


Sonoma Allergy Shot Hours

Monday - Closed

Tuesday - 2:00pm - 5:30pm

Wednesday - Closed

Thursday -  9:00 am-12:30 pm          2:00 pm - 5:30 pm

Friday - Closed