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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
Biological Dentistry and Oral Surgery
All dentists are taught to extract teeth. Some hone their skills with advanced training in residencies and internships, and others are mentored by experienced practitioners. However, biological dentistry brings different principles to the oral surgery procedure and there is a distinction between what is done conventionally vs. holistically to optimize healing following the removal of teeth.
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Insomnia and Natural Ways to Improve It
Insomnia is common but there are effective, natural ways to help insomnia. Insomnia can be defined as a problem falling sleep, maintaining sleep, waking up early or poor quality of sleep despite adequate opportunity for sleep. This usually results in some form of daytime challenge or impairment such as sleepiness, low energy or poor concentration. Various studies worldwide have shown the prevalence of insomnia is 10%–30% of the population, with some studies even as high as 50%–60%!
You Just Received a Cancer Diagnosis- What’s Next?
You have just received a diagnosis of cancer. It is normal to feel overwhelmed and experience mood swings. Your emotions might range widely from fear and sadness to anger and disbelief. However, working through your emotions and making a plan may help you in your journey toward healing.
Functional Medicine Testing for Food Sensitivities
Food sensitivity is often a major risk factor for systemic inflammation immune stress and it can distract your immune system from more important tasks such as destroying cancer cells, parasites, fungus, viruses and invasive fungus. As part of a functional medicine...
Analysis of a Natural Killer Cell As a Modifiable Factor for Cancer Prevention and Treatment
Natural Killer Cells and Cancer Natural killer cells are a type of lymphocyte, or white blood cell, that is an important component of our immune system. Natural killer (NK) cells play an important role in immune defense against cancer, viral infection and...



