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"I have been a patient of Dr Linda Davis for many years now and remained with her practice once if became a concierge practice. Dr Davis is a knowledgeable and well qualified physician who strives to give 100% to her patients.

She is personable and a compassionate  individual who listens to her patients and comes up with a plan of care that not only will take care of whatever issue they have but, that the patient is comfortable with. Dr Davis has hired staff that compliment her gentle and caring ways of practicing medicine.

The practice stands behind their mission statement of a family atmosphere and uses well trained and well qualified caring staff. I have had a few emergencies over the years and Dr Davis is easy to reach and quick to be attentive to whatever the issue is to resolve it. Dr Davis keeps her learning current and has a wide range of specialists who are amazing that she refers to and collaborates with as needed. "   

 - Melissa P.


"Dr. Zeller and his entire staff are extraordinary in providing medical services to my husband and me in an extremely personal, sensitive, and friendly manner.  It is very comforting to know that when we need to see a doctor because we are ill, Dr. Zeller always responds in a timely manner, and we are able to get an appointment the same day of our call.  Dr. Zeller is very professional and knowledgeable. He has a casual but caring personality, and he takes the time to listen to us and make us feel like we are not just patients but friends. 
Dr. Zeller's office manager, Becky, and the medical staff are very welcoming and competent.
They have helped to developed good communication between the doctor and patients. Thank you Kolvita for making our medical visits so positive."   
- Gloria R.


Hello Kolvita Family,

We hope everyone had a nice, relaxing Labor Day weekend!  A couple quick updates:


Numbers keep rising in California and Orange County, but luckily very little evidence of serious infection.
- OC Covid Positivity rate is 17.3%  (up from 13.7% two weeks ago)
- unvaccinated positivity rate of 13.6% and vaccinated positivity rate of 4.1%
- only one reported death due to Covid-19 in OC for the past week
- in the State of California, the positivity rate is 14.0% (up from 6.3% one month ago)
- California hospitalizations on 8/25 were 432 patients (up from 171 on 7/23)


the FDA is expected to approve the new, updated Covid-19 booster vaccine sometime in the next week; then the CDC committee on vaccines are scheduled to meet on Sept 12th to determine who should get the new booster.  Most experts estimate the vaccine will be available sometime the end of September.
- CDC is currently stating that anyone who has never been vaccinated should NOT wait for the new booster and should get the current vaccine available
- those who have been previously vaccinated and who recently received the current booster may have to delay getting the new booster
- if not at high risk, but due for the booster, it may be better to wait for the new one when it is available
- the difference between the boosters is the new one will be targeting newer variance of the Omicron strain that are causing 5-14% of the current cases.  There is a brand-new variant (BA.2.86) the CDC is tracking that is not in the new booster that is causing up to 20% of all new cases!


RSV (Respiratory Syncytial Virus) is a viral infection of the respiratory tract that is common in young infants, but can also affect adults who may be at higher risk. Peak season is from late Fall through Winter (similar to peak flu season).  It is estimated that RSV can cause 60,000-160,000 hospitalizations and 6,000 to 10,000 deaths in adults >65 per year.  There is a new vaccine available for adults to prevent this infection from causing serious health issues.  The FDA has approved a single shot vaccine for individuals > 60 years of age.  The CDC is currently recommending it for those that may be at higher risk, such as patients who may have: COPD/emphysema, asthma, heart disease, stroke history, diabetes, kidney disease or those healthy individuals >75.  If you are not sure if you are someone that would benefit from this vaccine, please consult with your doctor.


Reminder: we have flu shots at the office and are recommending everyone get their flu shot this month!  Please call us to schedule a time to come get yours soon!!


Just a reminder, if you have an urgent issue during our normal office hours, please call the office first.  Your issue will be able to be addressed in a timelier manner.  During office hours, your doctor may or may not be able to check their text messages as they are working with other patients or working on other office-related tasks.  For any non-urgent emails or text messages you send your doctor, please do not expect an immediate response.  They will respond when they have completed their daily responsibilities.

Please let us know if you have any questions.  Stay Healthy!

Dr. Davis, Dr. Zeller and the Kolvita Staff

"I have been a patient of Dr. Davis’ for over 20 years! Dr. Davis not only provides me with the BEST medical care, she knows me as a person and is a trusted friend. Our visits are never hurried and I always leave feeling so grateful for her care and advice.

She is constantly learning new ways to help her patients and is open to different methods of treatment depending on their needs. She has the special gift of connection that is rare to find in the medical field especially in these times.

Her staff is a reflection of her and they always make me feel comfortable and go above and beyond to accommodate my needs. Kolvita Medical is personalized medical care with the most dedicated staff you will ever encounter. I’m so thankful for Dr. Davis and her practice."

- Donna L.