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.
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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
Interventions to Slow Aging and Natural Decline of the Body
Aging is not a disease, yet it is accompanied by predictable, gradual declines in multiple physiological systems. These changes begin earlier than most people realize—often in the third or fourth decade of life—and accelerate with chronic stress, sedentary behavior,...
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Colon Cancer in Young Adults: Causes and Risk Factors
The Modern Gut Dilemma: From Backyard Chickens to Early-Onset Colon Cancer There is something inherently peaceful about keeping backyard chickens. You step outside in the morning, gather fresh eggs from birds that have spent their day pecking at grass, chasing bugs,...
Mold Exposure in Washington, D.C. and the Mid-Atlantic Region
For residents of Washington D.C., Maryland, and Virginia (the DMV region), mold exposure is not just an occasional household nuisance; it is a pervasive environmental hazard driven by geography and architecture. The region’s humid climate features high annual rainfall...
Natural Pain Relief Without Long-Term Medication Dependence
Many people living with chronic pain rely on medications for temporary relief, but these often do not address the underlying cause of discomfort. Once the root cause of pain is identified and treated, patients may experience long-term relief without relying on strong...
Allergy Sublingual Therapy for Whole-Body Allergy Symptoms
When Allergies Affect More Than Your Nose: Understanding Whole-Body Symptoms Most people think of allergies as sneezing, itchy eyes, or a stuffy nose. But for many, allergies can affect more than your nose. Allergies show up in ways that seem completely...




