• Avista Internal Medicine

  • Contact Us

    Contact us with questions or to schedule an appointment.

    Phone: 303-269-2700 
    Fax: 303-269-2690

    90 Health Park Drive, Suite 350 
    Louisville, CO  80027

  • Welcome to Avista Internal Medicine

    Avista Internal Medicine provides primary care and internal medicine services to men and women age 14 and older. Our practice also welcomes seniors and we do accept Medicare.

    We understand the importance of preventative care and encourage healthy lifestyle choices that help our patients prevent or manage disease. We specialize in diagnosing and treating adult diseases including cardiovascular diseases, endocrinology and rheumatology.

    Our internal medicine specialists are all Board Certified in internal medicine and are also primary care physicians. Whether you are in need of a general check-up or have a more complex disease or condition, you can feel confident that we can provide the individual care you need, and often can complete lab work and other diagnostic testing right in our office.

    Services Available:

    • Adult Primary Care
    • Senior Care
    • Preventive Care


  • Dr_Ho.jpgDr. John Ho is a primary care physician who is specially trained to diagnose and treat adult diseases. He uses the latest in evidence-based medicine to help patients promote health and prevent disease, and provides primary care for both men and women.

    Dr. Ho is Board Certified in Internal Medicine and has special interests in cardiovascular diseases, endocrinology and rheumatology. He received is medical degree from the University of Missouri at Kansas City, where he was a Missouri Curators Scholar and was awarded a Merck Award for Excellence in Medical Education. He then went on to complete his internship and residency at Wilford Hall USAF Medical Center Lackland AFB in San Antonio.

    Dr. Ho has been practicing internal medicine since 1994. After serving at the US Air Force Academy Hospital and prior to moving to Boulder County, he practiced with Colorado Springs Health Partners for 11 years.

    He enjoys an active Colorado lifestyle with his wife and two daughters.

    new0297_AvistaAdventistHospital_DrTamblyn.jpgAs an internal medicine physician, Dr. Jennifer Tamblyn is specially trained to diagnose and treat adult diseases. She provides primary care for both men and women, is fluent in English and Spanish, and has a special interest in women's health, cardiovascular disease and rheumatology.

    Board certified by the American Board of Internal Medicine, she earned her Doctor of Medicine degree from the University of Colorado at Denver, where she also completed a Master of Science in Public Health degree. She completed her residency at Exempla Saint Joseph Hospital in Denver.

    Dr. Tamblyn has served as an assistant professor of medicine at the University of Colorado, and has a passion for teaching medical students. She has also served as assistant program director for the university's internal medicine residency program. She has won several awards for excellence in medical education, professionalism, and serving as a role model for practicing compassionate patient care.

    She enjoys mountain and road biking, hiking, alpine skiing and traveling, and spending time with her husband and daughter.

    Joshua RaufmanJoshua Raufman is a board-certified Adult Nurse Practitioner. He completed his training at Columbia University in New York City, where he received both a Bachelor’s degree and Master of Science in nursing. He is fluent in Spanish and English and, prior to becoming a Nurse Practitioner, taught high school Spanish for a number of years. 

    Josh provides full-scope primary and acute care services including chronic disease management, preventive medicine, and treatment of acute illness. He believes in prioritizing nutrition and other modifiable lifestyle factors in the promotion of overall wellness and the prevention and management of chronic disease.

    When he is not treating patients, Josh can be found enjoying vegetarian cooking, hiking, and biking with his wife, son, and dog.

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