Skip to Main Content

Peter Ellis, MD, MPH

Associate Professor; Clinical Coordinator, Mental Health Collaborative Care program, Yale Internal Medicine Associates, Yale TCC; Co-Director, Yale Primary Care and Psychiatry Clerkship, Internal Medicine

Contact Information

Peter Ellis, MD, MPH

Patient Care Location

Mailing Address

  • General Internal Medicine

    PO Box 208056, 333 Cedar Street

    New Haven, CT 06520-8056

    United States



I am a practicing General Internist with additional training in Public Health (MPH, 1995, Johns Hopkins) and Medical Education (General Internal Medicine Fellowship, Johns Hopkins 1992-1995). I haven been working as a Yale Faculty member since 1995. I provide comprehensive medical care to my own panel of 1000 patients at Yale Internal Medicine Associates including preventive care, and I co-direct a required clinical clerkship for all Yale Medical Students, the Biopsychosocial Approach to Health - Primary Care Psychiatry Clerkship. Additionally, I serve on the Board of a local non-profit organization to improve access to medical care to New Haven area residents lacking health insurance, Project Access- New Haven (

Following is a more detailed biographical sketch:
I was born in 1961 in Milton, MA, graduated from Princeton University in 1983, UMDNJ-Robert Wood Johnson Medical School in 1987, and earned a Masters in Public Health from Johns Hopkins University School of Hygiene and Public Health in 1995. I joined the Yale Faculty in 1995 as Assistant Professor of Internal Medicine with an interest in teaching medical education and in caring for underserved individuals.
Together with my Yale colleagues , we launched a successful outreach project providing medical care to homeless persons at the St Vincent DePaul Homeless Shelter in Waterbury CT. I worked as Interim Director of Public Health, City of Waterbury CT during 2002 which propelled me to thinking about community health. I discovered Project Access, a coordinated system of charity medical care started in Asheville, NC to improve access and quality of care for uninsured, low income patients. In 2004 we obtained a Federal HRSA grant and successfully launched Project Access in Waterbury. As Medical Director, I helped recruit over 300 physicians who agreed to provide voluntary care. The project donated over $3,000,000 in medical care.

In 2006 I joined Yale Internal Medicine Associates where I provide primary care to a panel of approximately 1000 patients. In 2010, working together with medical specialist colleagues, we launched Project Access New Haven ( to improve access to specialty medical care for low-income, uninsured persons living in New Haven. We have donated over $50 million worth of care to patients to date.

In June 2016 I became co- Director of the Biopsychosocial Approach to Health - Primary Care Psychiatry Clerkship. The Clerkship are to equip Yale students with clinical skills needed to provide excellent Primary Care e.g., interviewing, physical examination, clinical reasoning. Students learn from dedicated, experience office-based preceptors while providing hands-on care managing patient's acute, chronic and preventive care needs. Students not learn not only about important medical and psychiatric conditions, but how to manage conditions that overlap specialties such as substance abuse, smoking cessation, somatic symptom disorder, delirium, and how to address social determinants of health. We want students to thinking holistically about health using a biopsychsocial approach.

I am proudest of these three awards:
1. Volunteerism and Community Service Award, Connecticut Chapter of the American College of Physicians, 2003.
2. George Thornton Community Teacher of the Year, Yale Primary Care Internal Medicine Residency Program 2005.
3. Distinguished Service Award, New Haven County Medical Association, 2009.

I live in New Haven together with my wife Merceditas Villanueva, MD, Director of the Yale HIV Program. We have two children, Maliya age 19 and Oceane, age 17, who inspire and humble us!

Education & Training

  • Fellow
    Johns Hopkins University School of Medicine (1995)
  • MPH
    Johns Hopkins School of Hygiene and Public Health (1995)
  • Resident
    Rhode Island Hospital (1990)
  • MD
    UMDNJ - Robert Woods Johnson (1987)
  • BS
    Princeton University (1983)


  • Early Flu Treatment May Be Critical (published comments in 2020)
    Westport, United States 2020
  • Career Options for Medical Students Interested in Primary Care
    North Haven, United States 2018
  • Impact of Patient Navigators and Community Health Workers on High Utilizers of Emergency Department
    San Antonio, United States 2017
  • Assessing the Impact of Patient Navigation on Reducing Emergency Visits for Adult Medicaid Frequent ED Users: A Randomized Controlled Trial
    Minneapolis, United States 2015
  • Impact of Patient Navigation on Patient-Reported Access/Barriers to Care among Medicaid-Insured, Frequent Emergency Department Users
    Minneapolis, United States 2015
  • Choosing Wisely: Interventions for Outpatients
    Southington, United States 2014
  • Randomized Controlled Trial of Patient Navigation for Medicaid-Insured Frequent Users of the Emergency Department
    Detroit, United States 2014
  • Reasons for frequent emergency department use: A qualitative study
    Dallas, United States 2014
  • Improving Access to Specialty care for Medicaid Insured in CT
    Hartford, United States 2011
  • Rationale for Implementing an Organized System of Charity Medical care for Uninsured in Fairfield County CT
    Fairfield, United States 2008
  • Health Care for the Homeless: A Multidisciplinary Approach
    Cromwell, United States 2003
  • Health Care for the Homeless
    Middletown, United States 2002
  • Designing and Implementing a Successful Weekly Ambulatory Core Curriculum
    Philadelphia, United States 2000
  • The Art of Inquiry: How to Identify, Classify, Articulate, and Teach Clinical Questions"
    Boston, United States 2000
  • Barriers to Providing Health Care using Resident Physicians for Homeless Persons"
    Providence, United States 2000
  • Teaching Medical Residents How to Care for Homeless Persons"
    New London, United States 1999

Honors & Recognition

AwardAwarding OrganizationDate
Excellence in Medical Education Research AwardYale School of Medicine2015
Connecticut Magazine Top Docs 2016-presentConnecticut Magazine2015
Community Service AwardConnecticut Hospital Association2014
Fellow, American College of PhysiciansAmerican College of Physicians2010
Fellow, American College of PhysiciansAmerican College of Physicians2010
Physician Humanitarian AwardNew Haven County Medical Association2009
Yale-Robert Wood Johnson International ScholarYale University School of Medicine2007
George Thornton Community Teacher of the YearYale Primary Care Internal Medicine Residency Program2005
Volunteerism and Community Service AwardConnecticut Chapter of the American College of Physicians2003
Associates Oral Abstract AwardSociety of General Internal Medicine1994
Full-time Attending Teaching AwardBrown University School of Medicine1992
Senior Resident Teaching AwardBrown University School of Medicine1990
Alpha Omega AlphaUMDNJ-Robert Wood Johnson Medical School1986

Professional Service

Yale Voluntary Faculty Appointments and Promotions CommitteeDiscuss and review applications for appointment and promotions among voluntary faculty2019 - 2022
Society for General Internal MedicinePoster Judge, Vignette Competition, March 2016. New Haven CT2016
Primary Care-Psychiatry Clerkship CommitteeI served first as Member and then Chair2015 - 2019
Community Health Worker Advisory Committee for CT State Innovation Model, State of CTMember2015 - 2018
Yale Figure Skating Club BoardMember2014 - 2021
Yale Primary Care/Mental health Clerkship Redesign CommitteeCo-Chair2014 - 2015
Yale Figure Skating Club, Yale Figure Skating ClubBoard Vice President2014 - Present
Yale School of Medicine Curriculum Rebuild CommitteeMember2013 - 2015
Social Justice Committee, Yale Internal Medicine Residency ProgramMember2012 - 2014
Longitudinal Clinical Experience Design CommitteeMember2012 - 2014
CT Governor's Commission on Heath Equity, CT Governor's Commission on Heath EquityMember2011 - 2014
Curriculum Design CommitteeMember2011 - 2013
EPIC Clinical leadership CommitteeMember2011 - 2012
Pre-Clinical Skills CommitteeMember2010 - 2021
Clerkship Directors CommitteeMember2010 - 2021
HAVEN Steering CommitteeMember2010 - 2021
Board of Directors, Communities Joined in Action, Communities Joined in ActionBoard Member for national non-profit organization2010 - 2019
Clinical Skills Assessment CommitteeMember2010 - 2014
Yale HAVEN Steering Committee, HAVEN, Yale Medical school's student-run free clinicI participate in regular meetings to guide student's operation of HAVEN, the student run free clinic2010 - Present
Board of Directors, Project Access New HavenI have served in various capacities as Member, Vice President, and Board Chair2008 - 2020
Project Access New HavenI am co-Founder and Past-President, Board of Directors for this non-profit organization. Our mission is to improve access to high quality medical care for under-insured in New Haven area.2008 - 2020
Yale Medical Group Credentials CommitteeMember2008 - 2016
Board of Directors, Girls, Inc. Waterbury CTMember2003 - 2005
Society of General Internal MedicineAbstract Review Committee1999
Johns Hopkins School of MedicineCrisis Review Committee, Multicenter Study of Hydroxyurea1992 - 1995
Johns Hopkins School of MedicinePhysician Interviewer, African American Study of Hypertension and Kidney Disease1992 - 1994

Departments & Organizations