About
D. A. from Harvard Medical School, one of that institution's highest honors. , where she served as Chief Resident, and followed that with a fellowship in Infectious Diseases at the same institution. Her career in internal medicine has spanned many years, and she holds active medical staff privileges at Aspen Valley Hospital.
Dr. Mass holds certification in clinical densitometry and stands as the only private practitioner in Aspen who reads bone density studies at Aspen Valley Hospital. She serves on the Performance Review Committee at Aspen Valley Hospital and holds certifications in BLS, ACLS, and FCCS. Her clinical passions include cardiovascular disease prevention, infectious diseases, and metabolic bone disease, with particular focus on osteoporosis diagnosis and treatment. She thrives on the challenge of complex differential diagnoses and approaches every patient with compassion. As an assistant clinical professor at the University of Colorado Medical School, she actively teaches third-year medical students and helped establish a referral relationship bringing University of Colorado sub-specialists to Aspen Valley Hospital.
Education & Training
Undergraduate
Barnard College, B.A.
Medical School
Harvard Medical School (graduated A.O.A. - honor medical society)
Residency
Internal Medicine, Harbor General U.C.L.A. (Chief Resident in Medicine)
Fellowship
Infectious Diseases, Harbor General U.C.L.A.
Additional Training
Assistant Clinical Professor at the University of Colorado Medical School
Certifications
Languages
English, French
Conditions Treated
Who is Dr. Mass right for?
Dr. Mass is a strong fit for adults managing complex or hard-to-diagnose internal medical conditions. Patients dealing with cardiovascular risk, osteoporosis, metabolic bone disease, or infectious diseases benefit directly from her clinical focus. She works well with patients who want a thorough, investigative approach to their health. Adults seeking bone density evaluation will find her expertise especially relevant, as she is the only private practitioner in Aspen reading those studies at Aspen Valley Hospital.
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Frequently Asked Questions
Dr. Mass specializes in cardiovascular disease prevention, osteoporosis, metabolic bone disease, and infectious diseases. She also focuses on early detection of complex adult medical problems through thorough differential diagnosis. Her broad internal medicine training makes her well suited for patients with multi-system or difficult-to-diagnose conditions.
Dr. Mass holds certifications in clinical densitometry, BLS, ACLS, and FCCS. A. and completed a fellowship in Infectious Diseases at the same institution. Her academic appointment as an assistant clinical professor at the University of Colorado Medical School reflects her clinical standing.
A. from Harvard Medical School after earning her undergraduate degree at Barnard College. , where she was selected as Chief Resident. A.
Yes. Dr. Mass serves on the active medical staff at Aspen Valley Hospital. She also sits on the hospital's Performance Review Committee. She is the only private practitioner in Aspen who reads bone density studies at Aspen Valley Hospital.
Dr. Mass focuses on early detection and prevention across cardiovascular health, infectious diseases, and metabolic bone disease. She is especially drawn to solving complex medical presentations through careful differential diagnosis. She approaches every patient with respect and compassion.
Yes. Dr. Mass serves as an assistant clinical professor at the University of Colorado Medical School and actively teaches third-year students. The practice hosts those students in the office, and the teaching program has received strong reviews from both patients and the medical school.
Yes. Osteoporosis diagnosis and treatment is one of Dr. Mass's primary clinical interests. She holds certification in clinical densitometry and is the only private practitioner in Aspen who reads bone density studies at Aspen Valley Hospital. Patients with metabolic bone disease or osteoporosis risk factors are well served by her focused expertise.
Doctor profile last updated April 4, 2026