Dr. James Robert Regan MD, Internist
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Dr. James Robert Regan MD


200 W County Line Rd Suite 370 Littleton CO, 80129



Dr. James Regan is an internist practicing in Littleton, CO. Dr. Regan specializes in the medical treatment of adults. Internists can act as a primary physician or a consultant to a primary physician. They manage both common and rare diseases. Dr. Regan provides comprehensive care and manages treatment with surgeons as well. Internists establish long-term relationships with their patients and incorporate disease prevention and mental health care into their practice.

Education and Training

Wayne State Univ Sch of Med, Detroit Mi 1982

Wayne State University School of Medicine 1982

Board Certification

Internal MedicineAmerican Board of Internal MedicineABIM

Provider Details

Male English
Dr. James Robert Regan MD
Dr. James Robert Regan MD's Expert Contributions
  • Is nausea normal with migraines?

    Nausea is a common symptom of migraine headaches. Indeed. Some suffer to the extent of actually vomiting. There are times when I prescribe a migraine med as well as a medicine for nausea. If you are a migraine sufferer I am not surprised that you have some nausea. This presumes you are already diagnosed with migraine headaches. So, if you suffer from migraines, nausea is not unexpected.If the migraines are different in location, frequency, or intensity, and if the nausea is a new symptom, I would recommend you see your regular physician. Also, I am not aware of your gender; are you male or female? Also, do you have any vision changes or any weakness or any tingling in your extremities during your headaches? All these questions are important and should be discussed with your regular physician. If a female and using birth control, I often discontinue this among certain migraine sufferers. I am not rendering any diagnosis with this answer. I am, however, agreeing with your mother in that migraine headaches are often accompanied by nausea. (https://migraineagain.com/migraine-nausea-vomiting/) Not having examined you I cannot be confident that your nausea is actually from a migraine headache, as other types of headaches can include nausea. I do recommend seeing your regular physician to address your headaches. I hope this answer is helpful. James R. Regan, MD, FACP READ MORE

Areas of expertise and specialization

Internal Medicine, adult outpatient healthcare

Faculty Titles & Positions

  • Associate Clinical Professor of Medicine University of Colorado School of Medicine 1995 - 2017
  • President Denver Medical Society 1999 - 2000
  • Board of Directors Colorado Medical Society 2004 - 2009
  • Treasure, Colorado Medical Society Colorado Medical Society 2008 - 2009
  • Chair of the BOD Colorado Foundation for Medical Care 2010 - 2011
  • Advisory Board Connect for Colorado 2016 - 2017
  • Board member, Drug Utilization Review Board, State of Colorado Colorado 1997 - 2016
  • Member Medicare Carrier Advisory Committee Colorado region 1998 - 2002


  • Fellowship 2005 American College of Physicians 
  • Best Doctors 2016 Best Doctors 


  • High Cholesterol
  • Sleep Apnea
  • Sleep Disorders
  • Herniated Disc
  • Learning Disabilities
  • Tremors
  • Indigestion
  • Pain
  • Prostatitis
  • Attention Deficit Hyperactivity Disorder (adhd)
  • Vascular Disease

Professional Memberships

  • American Medical Association  
  • American College of Physicians  
  • Colorado Medical Society  
  • Denver Medical Society  

Charities and Philanthropic Endeavors

  • Bethesda Lutheran Communities, medical director since 1987, Littleton, Colorado
  • Operation Walk, orthopedic mission to third world countries, doing medical clearance.
  • Cubmaster, Denver Area Council Pack 376, 2005-2011
  • Skyline Soccer Association, Board of Directors, 2007-2010
  • Governing Board, The Cherry Creek Challenge School, 2009-2011

Dr. James Robert Regan MD's Practice location

Practice At 200 W County Line Rd Suite 370

200 W County Line Rd Suite 370 -
Littleton, CO 80129
Get Direction
New patients: 303-791-8346

Get Direction
New patients: 303-791-8346
Fax: 303-683-5773

Dr. James Robert Regan MD's reviews

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Patient Experience with Dr. Regan


Based on 34 reviews

Dr. James Robert Regan MD has a rating of 4 out of 5 stars based on the reviews from 34 patients. FindaTopDoc has aggregated the experiences from real patients to help give you more insights and information on how to choose the best Internist in your area. These reviews do not reflect a providers level of clinical care, but are a compilation of quality indicators such as bedside manner, wait time, staff friendliness, ease of appointment, and knowledge of conditions and treatments.

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Head east on West County Line Road 768 ft
Turn left onto South Broadway 3641 ft
Turn right 392 ft
You have arrived at your destination, on the left



Head east on West County Line Road 768 ft
Turn left onto South Broadway 6.0 mi
Turn right onto East Hampden Avenue 1972 ft
Turn left 235 ft
You have arrived at your destination, on the right



Head east on West County Line Road 720 ft
Turn right onto South Broadway 1430 ft
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Keep in the middle 1.8 mi
Continue straight onto East Lincoln Avenue 1.6 mi
Turn right onto RidgeGate Parkway 1992 ft
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Enter the roundabout and take the 2nd exit onto RidgeGate Parkway 595 ft
Turn left 49 ft
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