An allergic reaction occurs when the immune system produces chemicals called histamines to fight off allergens. Many common substances can be triggers, including pollen, food, mold, dust, feathers, animal dander, chemicals, drugs, and environmental pollutants.

Our allergy tests are conducted by Diana Pettis. R.N. Diana Pettis is a trained allergy specialist and registered nurse at UCLA where she works in the neuro-intensive care unit.

Types of Allergy Testing We Provide:

Allergy skin testing to determine which environmental allergens to which the patient is sensitive.
Allergy treatment including immunotherapy which could be weekly allergy injections or sublingual allergy drops, administered by the patient at home.
Food allergy testing to determine which foods are causing reactions to then determine proper treatment.

Allergy tests are done under the guidance of an allergy specialist. These specialists are trained in the best methods for testing and treating allergies. Meet our specialists and get more details regarding Dr. Pettis, causes of ear neck and throat pain and more.

1. "Dr. Pettis and his staff in his Irvine location were the most kind and easy going folks."
2. Michael B. Yelp
1. "Very nice office and staff were very pleasant."
2. Nancy L. Yelp
1. "Simply outstanding. Caring, compassionate and thorough."
2. Michael B. Facebook

Welcome to OC Ear, Nose, Throat, Head & Neck Surgery.

Leading Specialized Head and Neck Surgeons in Irvine and all of Orange County

MOST COMPASSIONATE AND PATIENT FOCUSED ENT MEDICAL OFFICE

We provide comprehensive medical and surgical ear, nose, and throat care for adults and children. Our in-office services include balloon sinuplasty to immediately relieve sinusitis, CT scans of the ears and sinuses, as well as allergy testing and immunotherapy. We also offer complete state-of-the-art hearing evaluations and hearing aid fittings. We perform surgeries at Hoag Hospital in Irvine and Newport Beach, Mission Hospital, CHOC Children’s Hospital, and Long Beach Memorial Hospital.

We focus on individualized care and on developing trusting relationships with our patients. We never rush an appointment and we empower our patients with full understandings of each diagnosis. We look forward to meeting you!

✔ Diagnose and treat all medical ear, nose, and throat concerns

✔ Perform all specialized surgical procedures to address medical head, neck, ear, nose, and throat issues

✔ Conduct all diagnostic and advanced hearing test with individualized hearing and fitting

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Major Insurance Providers Accepted

Please contact our office if you have any questions regarding your insurance plan.

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Testimonials

Words from our patients

"Dr. Pettis goes above and beyond for all his patients. He has helped me tremendously. His entire staff is professional and so friendly."

Michelle J.
"He is intelligent, compassionate, easy to talk to and understand, and never makes you feel rushed during your appointment."

Jeffrey C.
"Dr. Pettis and his staff in his Irvine location were the most kind and easy going folks I have ever experienced."

Michael B.
"Dr. Pettis was not only kind and thorough but knowledgeable and he conducted basic exams that somehow escaped previous analysis at multiple doctors offices."

Olivia L.
"Dr. Pettis takes his time with his patients. He is thorough and explains everything so you have a good understanding of the procedure. We are very pleased"

Verified Patient
"Dr. Pettis literally saved my life with a very difficult surgery on a massive thyroid tumor that reached internally, inside my chest. "

Kat

Allergy Testing

Welcome to OC Ear, Nose, Throat, Head & Neck Surgery.

Leading Specialized Head and Neck Surgeons in Irvine and all of Orange County

MOST COMPASSIONATE AND PATIENT FOCUSED ENT MEDICAL OFFICE

Major Insurance Providers Accepted

Testimonials

Words from our patients

Michelle J.

Jeffrey C.

Michael B.

Olivia L.

Verified Patient

Kat

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