Ann Mass M.D.

Ann Mass M.D. received her B.A. from Barnard College.  She graduated A.O.A. (honor medical society) from Harvard Medical School.  Dr. Mass completed her training in Internal Medicine at Harbor General U.C.L.A. where she was chief resident in medicine and did fellowship work in infectious diseases.  She has had a long-standing practice in internal medicine and is on the active medical staff at Aspen Valley Hospital.  Dr. Mass is certified in clinical densitometry and is the only private practitioner in Aspen who reads bone density studies at Aspen Valley Hospital. Dr. Mass has been appointed to and serves on the Performance Review Committee at Aspen Valley Hospital.  Dr. Mass is certified in BLS, ACLS and FCCS. 

Her special interests include early detection and prevention with specific focus on cardiovascular health, infectious diseases and metabolic bone disease with an emphasis on the diagnosis and treatment of osteoporosis.  Foremost, she likes the challenge of differential diagnosis in addressing and solving complex medical presentations with a commitment to the compassionate and respectful care of her patients.

Dr. Mass is an assistant clinical professor at the University of Colorado Medical School and is active in teaching medical students. She was instrumental in developing a relationship that has brought sub-specialists from the University of Colorado to Aspen Valley Hospital.   Our teaching program, which hosts third year medical students in our office, has been well received by our patients and has engendered high reviews at the medical school. 

Aspen Internal Medicine Consultants is one of a select number of practices on the western slope of Colorado to have been awarded a Colorado Primary Care Initiative grant from the state of Colorado.This grant provides funds for the practice to explore innovative ways of communicating with and caring for our patients.


Emma Grindler PA-C

Emma Grindler, MS, PA-C is a board certified Physician Assistant. She is originally from Northern Michigan and graduated with a Bachelors of Science in Kinesiology at Michigan State University. Throughout her undergraduate years, Emma obtained her clinical hours working for adults and children with special needs in home health care. She then went on to attend Rosalind Franklin University where she received her Masters degree in Physician Assistant Studies.

 Emma’s training included rotations in internal medicine, family medicine, general surgery, pediatrics, women’s health, emergency medicine, and she completed an elective in orthopedic surgery and sports medicine. She has a special interest in preventative medicine and is passionate about providing education to patients regarding the impact that small lifestyle changes can have on health outcomes. She is motivated to partner with patients to create individualized treatment plans to achieve the common goal of a happy, healthier life.