As a board-certified allergist in Downtown, Los Angeles, CA, Dr. Johnson is experienced in evaluating the immune system and providing supportive and treatment options that can help support the immune system and reduce symptoms like chronic infections.


What are immunodeficiencies?

Immunodeficiencies (or immune deficiencies) are conditions and diseases that cause the immune system to function abnormally, typically causing chronic infection and illness. Immunodeficiencies that are present at birth are called primary immunodeficiencies. Those that are acquired later are called secondary immunodeficiencies.

What symptoms do immunodeficiencies cause?

Symptoms of immunodeficiencies can vary significantly from person to person, but the most common symptoms include:

  • multiple sinus infections within a 12-month period
  • Multiple ear infections within a 12-month period
  • Two or more serious infections such as blood-borne infections
  • chronic swelling beneath the skin
  • growth delays in infancy
  • chronic throat or mouth infections that may cause white patches to form

How are immunodeficiencies diagnosed?

Because many immunodeficiencies may be inherited, Dr. Johnson will take a comprehensive family medical history in addition to a personal health history. She'll also ask about your symptoms and whether you have any other immune-related conditions like allergies or diabetes. When an immunodeficiency is suspected, a blood test can be used to measure your level of immunoglobulins (Igs), proteins in the blood that play a major role in the body's natural immune response system. People who have immunodeficiency disorders have low levels of immunoglobulins, and the Ig blood test can be used to measure these levels to confirm the presence of an immune deficiency disorder.

How are immunodeficiencies treated?

Treatments for immunodeficiencies are based on the underlying cause of the disorder and are aimed at supporting immune system health and minimizing symptoms. Some types of immunodeficiencies respond to immunoglobulin replacement therapy, an intravenous therapy that is given over time to support immune system function. Other immunodeficiency disorders may require ongoing medication, treatment with a protein called gamma interferon or bone marrow transplant procedures. Dr. Johnson will discuss these and other treatment options during your office visit.

Office Hours

Our Regular Schedule


9:00 AM-5:00 PM


9:00 AM-5:00 PM


8:30 AM-5:00 PM


9:00 AM-5:00 PM


9:00 AM-5:00 PM






Find us on the map

  • "Dr. Johnson was very thorough and knowledgeable."
  • Yoda and Yoga

    In the film classic "The Empire Strikes Back," the iconic Jedi master Yoda inscrutably refers to "the Force" during training sessions with his disciple, Luke Skywalker. Yoda informs Luke that he "must feel the Force around you." Yoda himself is frequently seen assuming what may only be described as intergalactic ...

    Read More
  • Hip and Knee Security

    Everyone knows someone who has undergone hip or knee replacement. These surgeries are no longer exclusively performed on older persons and are now not uncommon procedures for many patients with persistent, significant hip or knee pain. Problems that lead people to be willing to undergo joint replacement ...

    Read More
  • Making the Grade

    The recent school year has long been over, but the echoes of learning, striving, and achieving persist. We may, if we choose, apply these remembrances of ourselves when we were in school to the circumstances of our health and well-being. We all want good health for ourselves and the members of our families, ...

    Read More
  • The Sounds of Summer

    The variegated songs of the mockingbird. The crack of the bat on the baseball diamond. The screaming of little children at play in the community pool. Wherever we turn, the sounds of summer surround us in a joyful uplifting cacophony. Summertime may mean barbecue and it may mean the beach, but it also ...

    Read More
  • Double Indemnity

    In the classic 1944 film noir, "Double Indemnity", insurance salesman Walter Neff (played by Fred MacMurray), gets into some pretty hot water involving his client (Barbara Stanwyck) and his co-worker (Edward G. Robinson). Neff tries to misuse the concept of double indemnity and he pays a heavy price. ...

    Read More
  • Health Statistics and You

    We are awash in numbers, thanks in large part to the proliferation of personal mobile devices and the wrong-headed use of so-called big data.1 But applying statistical tools to the same set of data can support competing theories and lead to contradictory results. Such conflicting outcomes, known as antinomies ...

    Read More
  • Helping Your Chiropractor Help You

    Your chiropractor has many powerful tools at his or her disposal to help you get well. These powerful tools include chiropractic care itself and specialized knowledge in nutrition, exercise, and rehabilitation. There are some things that you, too, can bring to the chiropractor-patient relationship in ...

    Read More
  • Meditation and Me

    For many of us, the practice of meditation seems like a totally foreign notion. In an era of full-time, morning-to-night distractions and distractibility, the concept of quietly sitting with nothing else to do seems impossibly ridiculous. Why would anyone do that, we ask, as we text message with one ...

    Read More
  • New Beginnings

    The time is always right to begin returning to good health. Regardless of whether your issues involve weight, exercise, diet, blood pressure, diabetes, or chronic pain, now is the time to begin taking action on your own behalf. You are not alone. Literally hundreds of millions of people worldwide have ...

    Read More
  • Remember to Schedule Your Spinal Screening

    Most of us have undergone some type of screening exam in the last several years. Depending on your age, personal history, and family history, you may have needed to go for a periodic mammography, colonoscopy, or cardiac stress test. If everything was fine, you have probably been instructed to follow-up ...

    Read More