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Meet Our Team of Adult Diabetes Care Providers at UMass Memorial Health

Working as a team to assist you with all aspects of diabetes management. Personalized care includes endocrinologists, behavioral psychologist, nurse practitioners, certified diabetes educators, registered dietitians, licensed practical nurses and patient care assistants.

Schedule or Cancel an Appointment; Urgent Diabetes Medical Issues
Call (508) 334-3206, Monday - Friday, 8am - 5pm  

After Hours, Weekends and Holidays
Call (508) 334-1000. Have operator page the adult endocrinologist on call 

New Patient Appointment

Endocrinologists & Specialists

  • Asem K. Ali

    Asem K. Ali, MD

    Director, Diabetes Services at Health Alliance and Community Diabetes Partnership Program

    Medical School: Omdurman Islamic University, Sudan
    Residency: Texas Tech University School of Medicine
    Fellowship: National Institutes of Health 
    Interest: Adipose Tissue Regulation in Diabetes

    Inpatient Diabetes Care

  • Julie R. Chan

    Julie R. Chan, MD

    Medical School: Tufts University School of Medicine

    Residency: Lahey Hospitals and Medical Center

    Fellowship: Lahey Clinic Medical Center

  • Leslie J. Domalik

    Leslie J. Domalik, MD

    Medical Director of Inpatient Diabetes Services

    Medical School: University of Pittsburgh School of Medicine
    Residency: Duke University Medical Center
    Fellowships: Duke University Medical Center 

    Inpatient Diabetes Care       

  • Richard A. Haas

    Richard A. Haas, MD, FACE

    Director of Gestational Diabetes

    Medical School: University of California at San Francisco
    Residency: Mount Sinai Medical Center & University Health Center of Pittsburgh
    Fellowship: Columbia Presbyterian Medical Center  

    Gestational Diabetes Care 

  • David M. Harlan

    David M. Harlan, MD

    William and Doris Krupp Chair in Diabetes, Co-Director, Diabetes Center of Excellence at UMass Chan Medical School

    Medical School: Duke University School of Medicine

    Residency & Fellowship: Duke University Medical Center

    Interests: Tolerance Mechanisms & Tissue Transplantation, Beta Cell Biology, Improving Diabetes Care Systems

    Harlan Research Lab

  • Andrea Kassai

    Andrea Kassai, MD, PhD

    Education: University of Debrecen, Hungary Medical & Health Sciences Centre
    Residency: Memorial Hospital of Rhode Island, Alpert Medical School of Brown University
    Fellowship: National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health

    Interest: Lipdystrophy 

  • Samir Malkani

    Samir Malkani, MD

    Clinical Chief, Division of Endocrinology & Diabetes, UMass Memorial Health and UMass Chan Medical School

    Medical School: All-India Institute of Medical Sciences
    Residency: Griffin Hospital, Yale University School of Medicine
    Fellowship: UMass Memorial Medical Center, UMass Graduate Medical Education 

    Interest: Diabetes and Population Health

  • Matthew A. Niemi

    Matthew A. Niemi, MD

    Medical School: Tufts University School of Medicine
    Residency: Beth Israel Deaconess Medical Center
    Fellowship: Beth Israel Deaconess Medical Center

    Diabetic Kidney Care


  • Mark O'Connor

    Mark O'Connor, MD

    Medical School: University of Massachusetts Medical School
    Residency: Mary Hitchcock Memorial Hospital
    Fellowship: Massachusetts General Hospital
    Interests: Clinical Research, Genetic Causes of Endocrine Disease
    Care Team Spotlight

  • Jason Samlin

    Jason Samlin, PsyD

    Education: Syracuse University, Rutgers University Graduate School of Applied and Professional Psychology
    Pre-doctoral Internship in Psychology: UMass Amherst
    Post-doctoral Fellowship in Behavioral Medicine: Chase Brexton Health Services, Baltimore

    Care Team Spotlight 

  • Vrushali Shah

    Vrushali Shah, MD

    Medical School: Pramukhswami Medical College, India
    Residency: University of Tennessee College of Medicine
    Fellowship:University of Pittsburgh School of Medicine 
    Interests: Diabetes & Cardiometabolic Health, Diabetes Technology, Neuroendocrinology 

  • Prateek Shukla

    Prateek Shukla, MD

    Medical School: Maulana Azad Medical College, India
    Residency: University of Connecticut
    Fellowship: Beth Israel Deaconess Medical Center and Joslin Diabetes Center
    Interests: Diabetes Technology,  Improving Diabetes Care Systems

    Care Team Spotlight 

  • Michael Thompson

    Michael Thompson, MD

    Medical School: University of Massachusetts Medical School
    Residency: UMass Memorial Medical Center, UMass Graduate Medical Education
    Fellowship: Duke University Medical Center 

    Interests: Clinical Trials & New Diabetes Treatment

  • Alicia L. Warnock

    Alicia L. Warnock, MD

    Medical School: Uniformed Services University of the Health Sciences
    Residency: Naval Medical Center Portsmouth
    Fellowship: National Capital Consortium, F. Edward Hébert School of Medicine
    Interests: Insulin Pumps, Obesity & Weight Management

    Care Team Spotlight

Licensed Practical Nurses

Patient Care Assistants

Masako Kawaji-Dubuisson Jennette Alexander
Melissa Schnauber Margaret Kwarteng
Betty Jo Shea Viviana Laracuente
Kelsey Vega Maribelys Lopez
  Felicia Mercier
  Vivian Nadutey
  Araba Ohene-Sakyi

Ambulatory Service Representatives

Senior Medical Administrative Secretaries

Lee Ann Cipro Elizabeth Collins
Nathen Ford Shioban Mariscal
Haneen Jawad Sonia Ortiz
Dawn Holloway Paula Yockel
Virgen Rivera  
Cynthia Ten  

Administrative Staff

Cheryl Barry, RN, CDCES, Diabetes Education Manager
Sandi Durand, Adult Clinic Manager  
Lisa Hubacz, Operations Supervisor