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National Integrated Health Associates (NIHA)
Holistic Integrative Medicine & Dental Center
Leaders in integrative and functional medicine and holistic dentistry, National Integrated Health Associates (NIHA) has been serving the Washington, D.C., Maryland, and Northern Virginia metropolitan area since 1995. Patients come from all over the United States to visit our cutting-edge holistic health care center.
NIHA’s integrative and functional medicine doctors and dentists blend the best of Western medicine and safe, natural therapies for comprehensive holistic treatment to help the body heal. Our practice is unique, offering a wide range of medical and dental services in one convenient location. Our professional health team includes integrative and functional medical physicians, holistic dentist, naturopathic physicians, and health professionals highly skilled in chiropractic, acupuncture, massage, IV therapies, and other healing therapies.
What Patients Say
Great office, best doctors. Dr Kalva is amazing to work with. Appreciate everyone here in the office, so helpful and kind.
Absolutely fabulous place. Best doctors ever.

I have been seeing Dr. Kannankeril for a few years and she is actively helping to get my body balanced and healthy. She listens, is knowledgeable, up to date with new treatments and excellent in her field. I always feel confident in her care that she is supporting me to great health in a personal way.
Dr. Kalva is an EXTRAORDINARY GEM of a doctor. HE IS ONE OF A KIND. He’s compassionate, warm, and highly skilled in functional medicine. He has great knowledge on thyroid issues and progressive treatment. He’s a wonderful communicator with teens and parents. We have been so blessed to find him. His care has been transformative for our family.
Dr. Coy Roskosky is the best Chiropractor I’ve ever been to! I even trusted him working on my children. My son played football and Dr. Coy help tremendously!
This is an excellent dentist office. After moving to the area, I struggled to find a great dentist. Most dentists in the area were still okay with mercury based fillings and routinely told me I had cavities when I suspected that was not true. NIHA provided a healthy experience and in my opinion are much more trustworthy.
Exclusive NIHA Articles
Colon Cancer Testing
Assessing patients for colon cancer is part of my functional medicine comprehensive gastrointestinal evaluation that all of my patients over 45 years old receive, especially those with a strong family history of colon cancer and those who have endured long-term severe symptoms of gastrointestinal/ GI dysfunction, such as irritable bowel syndrome (IBS), Crohn’s Disease and chronic constipation.
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Surprising Signs You May Have Obstructive Sleep Apnea
The main symptoms of obstructive sleep apnea, or OSA, are loud snoring, gasping or choking during sleep. However, there are many other less-familiar signs of sleep apnea, and they might surprise you. Obstructive sleep apnea is a sleep condition that causes the muscles in your throat to relax repeatedly during sleep.
How to Find Out About Your Genetic Risks
A human being’s genetic blueprint is housed in our 23 chromosomes which is where the name of the genetic test “23andMe” gets its name. Each of our 23 chromosomes has an average of about 1000 genes, and each gene has an average of about 100 quirky substitutions, which are sometimes referred to as mutations or polymorphisms. These millions of quirky substitutions partly explains why we are all so delightfully unique in the way we look, think, act and feel about life’s challenges. Most of these mutations or polymorphisms are not considered to be detrimental, but a handful could be important under certain circumstances and cause serious diseases and other health problems, which is why it is important to know about them.
Depression and the Joy of Life: a Functional Medicine Approach
In functional medicine, depression is not viewed as an isolated, unfortunate situation that can be fixed quickly with a pill and some talk. Functional medicine recognizes that in the human body, every cell affects other cells. As a physician, I want to know what is...
Opioid and Painkiller Abuse: Replace What is Needed in the Brain
Sadly, opioid abuse and painkiller addiction are rising dramatically and are now exceeding the mortality rates of auto accidents and gunshot wounds combined. Restoring Natural Opioids to the Brain The new healthcare budget may pump 45 billion dollars into opioid abuse...




