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Availability last updated 07/17/2026
Board Certified in Integrative & Holistic Medicine as well as Family Medicine, Certified Functional Medicine physician Dr. Calihan brings decades of experience to her work with patients, whom she helps achieve optimal health and wellness through a variety of techniques.
Dr. Calihan has spent many years studying and obtaining credentials in holistic, functional, and integrative medicine. Her practice has been awarded the Best of Loudoun prize for alternative medicine each year since 2007.
Dr. Calihan graduated from Smith College in Northampton, Massachusetts, before obtaining her medical degree from Georgetown University Medical School in Georgetown, Washington, DC.
Dr. Calihan trained and precepted at the Center for Mind-Body Medicine in Washington, DC, and she also trained in acupuncture with Dr. Joseph Helms at UCLA.
In 2000, Dr. Calihan earned her board-certification in Holistic Medicine, and in 2014 became a member of the first class of Certified Functional Medicine Physicians through the Institute of Functional Medicine.
Dr. Calihan was a founding owner and former medical director at Loudoun Medical Group, one of the largest multi-specialty physician practices in the mid-Atlantic region. She was also their Board Chair from 2000 to 2005.
Dr. Calihan specializes in the treatment of chronic, complex conditions, including autoimmune disease, thyroid and hormonal imbalances, biotoxin illness, chronic fatigue, and fibromyalgia. Using the Functional medicine approach, she searches for the cause of a condition and then works to help rebalance the system.
Visit Dr. Calihan for compassionate, comprehensive health care with a personal touch. She’s currently welcoming new patients.
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Dr. Martha Calihan, MD
Family Physician
116-Q Edwards Ferry Rd NE
Leesburg, VA 20176
Shemicka Asom, CRNP
Family Physician
12799 Buttercup Court
West Friendship, MD 21794
Tavershima Asom
Family Physician
12799 Buttercup Court
West Friendship, MD 21794
Shemicka Asom, CRNP
Family Physician
9950 Oak Lea Ct
Ellicott City, MD 21042
Tavershima Asom
Family Physician
9950 Oak Lea Ct
Ellicott City, MD 21042
Dr. Chantal Lewis, MD
Family Physician
16001 Loves Mill Lane
Gainesville, VA 20155
Colleen Goode, DNP, MA, FNP-BC, CNE
Family Physician
517 Benfield Rd
Severna Park, MD 21146
Ms. Shannon Martin, FNP-C
Family Physician
1406-B Crain Highway S
Suite 304
Glen Burnie, MD 21061
Shemicka Asom, CRNP
Family Physician
28928 Ridge Road
Mount Airy, MD 21771
Tavershima Asom
Family Physician
28928 Ridge Road
Mount Airy, MD 21771
Shemicka Asom, CRNP
Family Physician
2913 Greenway Dr
Ellicott City, MD 21042
Tavershima Asom
Family Physician
2913 Greenway Dr
Ellicott City, MD 21042
Shemicka Asom, CRNP
Family Physician
2839 Country Lane
Ellicott City, MD 21042
Tavershima Asom
Family Physician
2839 Country Lane
Ellicott City, MD 21042
Ms. Shannon Martin, FNP-C
Family Physician
Do Not Use
Glen Burnie, MD 21061
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