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John Z. Ayanian, M.D., M.P.P.
Harvard Medical School
Department of Health Care Policy
Phone: (617) 432-3455   Fax: (617) 432-0173
E-mail: ayanian@hcp.med.harvard.edu

Education

Research and Projects

Dr. Ayanian’s research focuses on the effect of patients’ race, ethnicity, gender, insurance coverage, and socioeconomic characteristics on access to care and clinical outcomes, as well as the impact of physicians’ specialty and organizational characteristics on the quality of care.   He is the principal investigator of the Harvard/Northern California research team in the Cancer Care Outcomes Research and Surveillance (CanCORS) Consortium, a multi-regional initiative funded by the National Cancer Institute to evaluate the experiences and outcomes of patients with colorectal cancer and lung cancer.  He leads two other NCI-funded studies evaluating randomized interventions to improve systems for colorectal cancer screening.

In Dr. Ayanian’s recent research, he has studied trends in quality of care and racial disparities in Medicare managed care plans, the effect of Medicare coverage on previously uninsured adults, the impact of ambulatory care from primary care physicians and cardiologists on the outcomes of Medicare beneficiaries who have survived a heart attack, the relation of surgical volume to outcomes of colorectal cancer, and patients’ perceptions of the quality of cancer care by race, ethnicity, and language.  His previous research includes studies of the effects of race and gender on access to kidney transplants and cardiac procedures, and the quality of care for common medical conditions in teaching and non-teaching hospitals.

Representative Publications:

Ayanian JZ, Zaslavsky AM, Guadagnoli E, Fuchs CS, Yost KJ, Creech CM, Cress RD, O’Connor LC, West DW, Wright WE.  Patients’ perceptions of quality of care for colorectal cancer by race, ethnicity, and language.  J Clin Oncol 2005; 23:6576-86.

Trivedi AN, Zaslavsky AM, Schneider EC, Ayanian JZ.  Trends in the quality of care and racial disparities in Medicare managed care.  N Engl J Med 2005; 353:692-700.

Jha AK, Perlin JB, Steinman MA, Peabody JW, Ayanian JZ.  Quality of ambulatory care for women and men in the Veterans Affairs healthcare system.  J Gen Intern Med 2005; 20:762-5.

Persell SD, Maviglia S, Bates DW, Ayanian JZ.  Ambulatory hypercholesterolemia management in patients with atherosclerosis: sex and race differences in processes and outcomes.  J Gen Intern Med 2005; 20:123-30.

Ayanian JZ, Chrischilles EA, Fletcher RH, Fouad MN, Harrington DP, Kahn KL, Kiefe CI, Lipscomb J, Malin JL, Potosky AL, Provenzale DT, Sandler RS, van Ryn M, Wallace RB, Weeks JC, West DW.  Understanding cancer treatment and outcomes: the Cancer Care Outcomes Research and Surveillance Consortium.  J Clin Oncol 2004; 15:2992-6.

Sequist TD, Narva AS, Stiles SK, Carp SK, Cass A, Ayanian JZ.  Access to renal transplantation among American Indians and Hispanics.  Am J Kidney Dis 2004; 44:344-52.

McWilliams JM, Zaslavsky AM, Meara E, Ayanian JZ.  Health insurance coverage and mortality among the near-elderly.  Health Aff 2004; 23(4):223-33.

Ayanian JZ, Cleary PD, Keogh JH, Noonan SJ, David-Kasdan JA, Epstein AM.  Physicians’ beliefs about racial differences in referral for renal transplantation.  Am J Kidney Dis 2004; 43:350-7. 

Ayanian JZ, Zaslavsky AM, Weissman JS, Schneider EC, Ginsburg JA.  Undiagnosed hypertension and hypercholesterolemia among uninsured and insured adults in the Third National Health and Nutrition Examination Survey (NHANES III).  Am J Public Health 2003; 93:2051-4.

McWilliams JM, Zaslavsky AM, Meara E, Ayanian JZ.  The impact of Medicare coverage on basic clinical services for previously uninsured adults.  JAMA 2003; 290:757-64.

Hodgson DC, Zhang W, Zaslavsky AM, Fuchs CS, Wright WW, Ayanian JZ. Relation of hospital volume to colostomy rates and survival for patients with rectal cancer.  J Natl Cancer Inst 2003; 95:708-16.

Ayanian JZ, Zaslavsky AM, Fuchs CS, Guadagnoli E, Creech CM, Cress RD, O’Connor LC, West DW, Allen ME, Wolf RE, Wright WE. Use of adjuvant chemotherapy and radiation therapy for colorectal cancer in a population-based cohort. J Clin Oncol 2003; 21:1293-1300.

Ayanian JZ, Landrum MB, Guadagnoli E, Gaccione P.  Specialty of ambulatory care physicians and mortality among elderly patients after myocardial infarction.  New Eng J Med 2002; 347:1678-86.

Ayanian JZ, Landrum MB, McNeil BJ.  Use of cholesterol-lowering therapy by elderly adults after myocardial infarction.  Arch Intern Med 2002; 162:1013-9.

Federman AD, Adams AS, Ross-Degnan D, Soumerai SB, Ayanian JZ.  Supplemental insurance and use of effective cardiovascular drugs among elderly Medicare beneficiaries with coronary heart disease.  JAMA 2001; 286:1732-9.

Ayanian JZ, Weissman JS, Schneider EC, Ginsburg JA, Zaslavsky AM.  Unmet health needs of uninsured adults in the United States.  JAMA 2000; 284:2061-9.

Ayanian JZ, Cleary PD, Weissman JS, Epstein AM.  The effect of patients’ preferences on racial differences in access to renal transplantation.  N Engl J Med 1999; 341:1661-9.

Keating NL, Cleary PD, Rossi AS, Zaslavsky AM, Ayanian JZ.  Use of hormone replacement therapy by postmenopausal women in the United States.  Ann Intern Med 1999; 130:545-53.

Ayanian JZ, Cleary PD.  Perceived risks of heart disease and cancer among cigarette smokers.  JAMA 1999; 281:1019-21.

Keating NL, Zaslavsky AM, Ayanian JZ.  Physicians’ experiences and beliefs regarding informal consultation.  JAMA 1998; 280:900-4.

Ayanian JZ, Landrum MB, Normand S-LT, Guadagnoli E, McNeil BJ.  Rating the appropriateness of coronary angiography: do practicing physicians agree with an expert panel and with each other?  N Engl J Med 1998; 338:1896-1904.

Ayanian JZ, Guadagnoli E, Cleary PD.  Physical and psychosocial functioning of women and men after coronary artery bypass surgery.  JAMA 1995; 274:1767-70.

Ayanian JZ, Hauptman PJ, Guadagnoli E, Antman EM, Pashos CL, McNeil BJ. Knowledge and practices of generalist and specialist physicians regarding drug therapy for acute myocardial infarction.  N Engl J Med 1994; 331:1136-42.

Ayanian JZ, Kohler BA, Abe T, Epstein AM.  The relation between health insurance coverage and clinical outcomes among women with breast cancer.  N Engl J Med 1993; 329:326-31.

Ayanian JZ, Udvarhelyi IS, Gatsonis CA, Pashos CL, Epstein AM.  Racial differences in the use of revascularization procedures after coronary angiography.  JAMA 1993; 269:2642-6.

Ayanian JZ, Epstein AM.  Differences in the use of procedures between women and men hospitalized for coronary heart disease. N Engl J Med 1991; 325:221-5.