HealthQuality2 Inc.
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Chen JY, Kang N, Juarez DT, Yermilov I, Braithwaite RS, Hodges KA, Legorreta AP, Chung RS, Heart failure patients receiving ACEIs/ARBs were less likely to be hospitalized or to use emergency care in the following year. J Healthc Qual. July, 2011.

Chen JY, Tian H, Juarez DT, Yermilov I, Braithwaite RS, Hodges KA, Legorreta AP, Chung RS, Does pay for performance improve cardiovascular care in a "real-world" setting? Am J Med Qual. September, 2011.


Chen JY, Kang N, Juarez DT, Hodges KA, Chung RS, Legorreta AP, Impact of a pay-for-performance program on low performing physicians. J Healthc Qual. January 2010.

Chen JY, Tian H, Taira Juarez D, Hodges KA Jr, Brand JC, Chung RS, Legorreta AP, The effect of a PPO pay-for-performance program on patients with diabetes. Am J Manag Care. January, 2010.

Helderman JH, Kang N, Legorreta AP, Chen JY, Healthcare costs in renal transplant recipients using branded versus generic ciclosporin. Appl Health Econ Health Policy. August 2010.


Min JK, Kang N, Shaw LJ, Devereux RB, Robinson M, Lin F, Legorreta AP, Gilmore A, Costs and clinical outcomes after coronary multidetector CT angiography in patients without known coronary artery disease: comparison to myocardial perfusion SPECT. Radiology. October, 2008.

Min JK, Robinson M, Shaw LJ, Lin F, Legorreta AP, Gilmore A, Differences in episode-based care costs for multidetector computed tomographic coronary angiography versus myocardial perfusion imaging for the diagnosis of coronary artery disease.. J Med Econ. 2008.


Gilmore AS, Zhao Y, Kang N, Ryskina KL, Legorreta AP, Taira DA, Chung RS. Patient Outcomes and Evidence-Based Medicine in a Preferred Provider Organization Setting: A Six-Year Evaluation of a Physician Pay-for-Performance Program. Health Services Research. December, 2007.

Gilmore AS, Helderman JH, Ricci JF, Ryskina KL, Feng S, Kang N, Legorreta AP. Linking the US Transplant Registry to Administrative Claims Data: Expanding the Potential of Transplant Research. Medical Care. June, 2007.


Legorreta AP, Clark S, Marehbian J, Ryskina K, Cerulli A, Barghout V, Shetzline M Work Productivity and Activity Impairment in Patients with Common Gastrointestinal Motility and Sensory Disorders. American College of Gastroenterology, Annual Scientific Meeting and Postgraduate Course, Poster Presentation P733. October, 2006.

Berthiaume JT, Chung RS, Ryskina KL, Walsh J, Legorreta AP. Aligning Financial Incentives with Quality of Care in the Hospital Setting. Journal for Healthcare Quality. March, 2006.


O'Connor RD, Carranza Rosenzweig JR, Stanford RH, Gilmore AS, Ryskina KL, Legorreta AP, Stempel DA. Asthma-related exacerbations, therapy switching, and therapy discontinuation: a comparison of three commonly used controller medications. Annals of Asthma, Allergy, and Immunology. December, 2005.

Legorreta AP, Yu A, Chernicoff H, Gilmore A, Jordan J, Rosenzweig JC. Adherence to Combined Lamivudine & Ziodovudine Versus Individual Components: A Community Based Retrospective Medicaid Claims Analysis. AIDS Care. November, 2005.

Stempel DA, Stoloff SW, Carranza Rosenzweig JR, Stanford RH, Ryskina KL, Legorreta AP. Adherence to asthma controller medication regimens. Respiratory Medicine. October, 2005.


Berger WE, Legorreta AP, Blaiss MS, Schneider EC, Luskin AT, Stempel DA, Suissa S, Goodman DC, Stoloff SW, Chapman JA, Sullivan SD, Vollmer B, Weiss KB . The Utility of the Health Plan Employer Data and Information Set (HEDIS) Asthma Measure to Predict Asthma-related Outcomes. Annals of Allergy, Asthma & Immunology. December, 2004.

Legorreta AP, Metz R, Nelson CF, Ray S, Chernicoff HO, DiNubile NA. Comparative Analysis of Individuals With and Without Chiropractic Coverage: Patient Characteristics, Utilization, and Costs. Archives of Internal Medicine. October, 2004.

Legorreta AP, Chernicoff HO, Trinh J, Parker RG. Diagnosis, Clinical Staging, and Treatment of Breast Cancer: A Retrospective Multi-Year Study of a Large Controlled Population. American Journal of Clinical Oncology. April, 2004.


Chung RS, Chernicoff HO, Nakao KA, Nickel RC, Legorreta AP. A PPO Quality-of-Care Driven Physician Compensation Model: Four-year Follow Up Study. Journal for Healthcare Quality. November, 2003.

Berthiaume J, Chernicoff HO, Kim JJ, Chung RS, Pang RC, Legorreta AP. Antibiotics for Viral Respiratory Infections: Results of a Physician-Based Intervention in a Predominantly PPO Setting. Disease Management & Health Outcomes. October, 2003.

Legorreta AP. Letter to the Editor: Changing Health Insurance Trends. New England Journal of Medicine. January, 2003.


Legorreta AP, Ricci JF, Wiener DJ, Markowitz M, Jhingran P. Patients Diagnosed with Irritable Bowel Syndrome: Medical Record Validation of A Claims-Based Algorithm. Disease Management & Health Outcomes. November, 2002.

Legorreta AP. Costs Associated with Common Dual-Controller Therapies for Treating Asthma in Several Managed-Care Populations. Journal of Managed Care Pharmacy. September, 2002.

O'Connor RD, O'Donnell JC, Pinto LA, Wang SW, Wiener DJ, Legorreta AP. Two-Year Retrospective Economic Evaluation of Three Dual-Controller Therapies Used in the Treatment of Asthma. Chest Journal. April, 2002.


Lin Z, Meng Y, Leung KM, Jatulis DE, Welsh NJ, Legorreta AP. Cardiovascular Disease Risk Stratification and Comparison in a California Population. Preventive Cardiology. December, 2001.

Wang S, Liu X, Wiener DJ, Sennett C, Bowers BW, Legorreta AP. Comparison of Prevalence, Cost, and Outcomes of Combination of Salmeterol and Fluticasone Therapy to Common Asthma Treatments in a Managed Care Environment. The American Journal of Managed Care. September, 2001.

Liu X, Farinpour R, Sennett C, Bowers BW, Legorreta AP. Improving the Quality of Care of Patients with Asthma: The Example of Patients with Severely Symptomatic Disease. Journal of Evaluation in Clinical Practice. August, 2001.

Gines MD, Pinto LA, Gocka IT, Legorreta AP. Relationship between Chronic Conditions and Patient Satisfaction: The Managed Care Experience. The Managed Care Experience. August, 2001.

Liu X, Sennett C, Legorreta AP. Mammography Utilization Among California Women Age 40- 49 in a Managed Care Environment. Breast Cancer Research and Treatment. May, 2001.


Legorreta AP, Liu X, Parker RG. Examining the Utilization of Breast-Conserving Treatment for Women With Breast Cancer in a Managed Care Environment. American Journal of Clinical Oncology. October, 2000.

Legorreta AP, Leung KM, Berkbigler D, Evans R, Liu X. Outcomes of a Population-Based Asthma Management Program: Quality of Life, Absenteeism and Utilization. Annals of Allergy, Asthma, & Immunology. July, 2000.

Legorreta AP, Liu X, Zaher CA, Jatulis D. Variation in Managing Asthma: Experience at Medical Group Level in California. The American Journal of Managed Care. The American Journal of Managed Care. April, 2000.


Meng Y, Gocka I, Leung KM, Elashoff RM, Legorreta AP. Disenrollment from an HMO and Its Relationship with the Characteristics of Medicare Beneficiaries. Journal of Health Care Finance. December, 1999.

Parker RG, Leung KM, Rees KS, Bassett LW, Legorreta AP. Mammographic Screening Downstages Breast Carcinomas at Time of Diagnosis: A Community-Based Experience. The Breast Journal. November, 1999.

Legorreta AP, Meng Y, Leung KM, Lin Z, Davidson MB. Diabetes and Disenrollment in an HMO Setting? Four-Year Longitudinal Study with a Matched Cohort. Diabetes Care. September, 1999.

Halbert RJ, Leung KM, Nichol JM, Legorreta AP. Effect of Multiple Patient Reminders in Improving Diabetic Retinopathy Screening: A Randomized Trial. Diabetes Care. May, 1999.

Meng Y, Leung KM, Schocket AL, Halbert RJ, Legorreta AP. Compliance with U.S. Asthma Management Guidelines and Specialty Care: A Regional Variation or National Concern?. Journal of Evaluation in Clinical Practice. May, 1999.

Parker RG, Rees KS, Leung KM, Legorreta AP. Expression of Risk Factors for Breast Cancer in Females Under 49 Years of Age. American Journal of Clinical Oncology. April, 1999.

Leung KM, Hasan AG, Rees KS, Parker RG, Legorreta AP. Patients with Newly Diagnosed Carcinoma of the Breast: Validation of a Claim-Based Identification Algorithm. Journal of Clinical Epidemiology. January, 1999.


Jatulis DE, Meng Y, Elashoff RM, Schocket AL, Evans RM, Hasan AG, Legorreta AP. Preventive Pharmacologic Therapy Among Asthmatics: Five Years After Publication of Guidelines. Annals of Allergy, Asthma, & Immunology. July, 1998.

Parker RG, Berkbigler D, Rees KS, Leung KM, Legorreta AP. Axillary Node Dissection in Ductal Carcinoma In Situ. Axillary Node Dissection in Ductal Carcinoma In Situ. American Journal of Clinical Oncology. April, 1998.

Legorreta AP, Christian-Herman J, O?onnor RD, Hasan MM, Evans R, Leung KM. Compliance With National Asthma Management Guidelines and Specialty Care: . Archives of Internal Medicine. March, 1998.

Leung KM, Elashoff RM, Rees KS, Hasan MM, Legorreta AP. Hospital-and-Patient-related Characteristics Determining Maternity Length of Stay: A Hierarchical Linear Model Approach. American Journal of Public Health. March, 1998.


Meng Y, Jatulis DE, Elashoff RM, Liu E, Leung KM, Legorreta AP. Validity of Clinical Information from a Maternity Survey. American Journal of Medical Quality. September, 1997.

Meng Y, Jatulis DE, McDonald JP, Legorreta AP. Satisfaction With Access to and Quality of Health Care Among Medicare Enrollees in a Health Maintenance Organization. The Western Journal of Medicine. April, 1997.

Legorreta AP, Hasan MM, Peters AL, Pelletier KR, Leung KM. An Intervention for Enhancing Compliance With Screening Recommendations for Diabetic Retinopathy: . Diabetes Care. April, 1997.

Jatulis DE, Bundek NI, Legorreta AP. Identifying Predictors of Satisfaction with Access to Medical Care and Quality of Care. American Journal of Medical Quality. March, 1997.


Legorreta AP, Brooks RJ, Leibowitz AN, Solin LJ. Cost of Breast Cancer Treatment: A 4-Year Longitudinal Study. Archives of Internal Medicine. October, 1996.

Peters AL, Legorreta AP, Ossorio RC, Mayer DB. Quality of Outpatient Care Provided to Diabetic Patients. Diabetes Care. June, 1996.


Legorreta AP, Brooks RJ, Staroscil RN, Xuan Y, Costantino GN, Zatz SL. Increased ERCP Rate Following the Introduction of Laparoscopic Cholecystectomy. Increased ERCP Rate Following the Introduction of Laparoscopic Cholecystectomy. Journal of Laparoendoscopic Surgery. October, 1995.


Solin LJ, Legorreta AP, Schultz DJ, Zatz S, Goodman RL. The Importance of Mammographic Screening Relative to the Treatment of Women With Carcinoma of the Breast. Archives of Internal Medicine. Archives of Internal Medicine. April, 1994.

Solin LJ, Legorreta AP, Schultz DJ, Levin HA, Zatz S, Goodman RL. Analysis of a Claims Database for the Identification of Patients with Carcinoma of the Breast. Journal of Medical Systems. February, 1994.

Morel MG, Anyaegbunam AM, Mikhail MS, Legorreta AP, Whitty JE. Oxytocin Augmentation in Arrest Disorders in the Presence of Thick Meconium: Influence on Neonatal Outcome. . Gynecologic and Obstetric Investigation. January, 1994.


Legorreta AP, Silber JH, Costantino GN, Kobylinski RW, Zatz SL. Increased Cholecystectomy Rate After the Introduction of Laparoscopic Cholecystectomy. The Journal of the American Medical Association. September, 1993.

Sennett C, Legorreta AP, Zatz SL. Performance-based Hospital Contracting for Quality Improvement. The Joint Commission Journal on Quality Improvement. September, 1993.

Legorreta AP, Mikos J, Sullivan A, Delany HM. The High Cost of Hospital Trauma Care: An Analysis of Hospital Length of Stay, Injury Severity Score, Case Mix Index, and Reimbursement-to-Cost Ratio. Journal of the Association for Academic Minority Physicians. January, 1993.