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Garden City

Our Clinicians

Looking to become a Coastal patient? Click here to view a list of our practices accepting new patients.

Please Note: The "Book an Appointment" option is for existing patients only.

Kathryn Coolidge, MD

Dr. Kathryn Coolidge is a graduate of Temple University School of Medicine in Philadelphia, PA.  She completed her residency in Internal Medicine at Rhode Island Hospital and The Miriam Hospital in Providence, RI.  Prior to joining Coastal Medical, Dr. Coolidge was a hospitalist at Rhode Island Hospital for 7 years and also served as a clinical instructor at The Warren Alpert Medical School of Brown University.

Alex Costa, PA

Alex Costa graduated from Johnson & Wales University in Providence, Rhode Island with a Master of Science in Physician Assistant Studies.  Prior to joining Coastal, he worked in emergency medicine at both Rhode Island and Miriam Hospitals. 
Languages: Alex is conversational in Portuguese


Yul David Ejnes, MD, M.A.C.P.

Yul D. Ejnes, MD, MACP, is an internal medicine specialist who received his medical degree from Brown Medical School in Providence, Rhode Island in 1985 and completed his internal medicine residency training, followed by a year as Chief Medical Resident, at Rhode Island Hospital. He is board-certified by the American Board of Internal Medicine.

A founding partner of Coastal Medical, Inc., Dr. Ejnes is a former member of its Board of Directors and current member of its Pharmacy and Therapeutics Committee and Governance Committee. He is on the affiliate staff of Rhode Island Hospital, where he served on several committees including the Medical Executive Committee, Credentialing Committee, and the Medical Record Committee, which he chaired. He is Clinical Associate Professor of Medicine at Brown Medical School, where he teaches medical students and residents, including training medical residents in the private practice setting. Dr. Ejnes has written and lectured on medical use of the Internet and was one of the first physicians in Rhode Island to use electronic mail for patient-physician communication.

Dr. Ejnes is Past Chair of the Board of Regents of the American College of Physicians (ACP), the nation’s largest medical specialty organization.  He served as Chair in 2011-2012. Dr. Ejnes was Governor of the Rhode Island Chapter of ACP from 2002-2006 and chaired the national Board of Governors from 2006-2007. He also served on or chaired numerous ACP national committees and has spoken nationally and internationally at ACP meetings. He currently writes a monthly column for ACP on the blog (

In April 2012, Dr. Ejnes became a Master of the American College of Physicians (MACP) at the Internal Medicine meeting in New Orleans.  Levels of membership in ACP are Medical Student, Associate, Member, Fellow, Honorary Fellow, and Master. Election to Mastership recognizes outstanding and extraordinary career accomplishments. Masters must have made a notable contribution to medicine. This includes, but is not limited to: teaching, outstanding work in clinical medicine (research or practice), contributions to preventive medicine, improvements in the delivery of health care, and/or contributions to the medical literature.

In addition to his national activity, Dr. Ejnes is Past President of the Rhode Island Medical Society and Past President of the Rhode Island Society of Internal Medicine. Dr. Ejnes was a member of the Board of Directors of the Rhode Island Quality Institute, which operates the state wide health information exchange (CurrentCare) from 2002 to 2016, including serving as Chair from 2012 to 2015.

Presently, Dr. Ejnes serves on the Internal Medicine Specialty Board of the American Board of Internal Medicine, which certifies and recertifies internal medicine specialists and subspecialists.

Vanessa R. Greenier, MD

Dr. Vanessa Greenier is a graduate of Brown University School of Medicine and completed her residency at Emory University School of Medicine and the University of Pennsylvania.  She is a member of American College of Physicians, the American Medical Association and the Rhode Island Medical Society.

Kimberly Propert, MSN, NP

Kimberly Propert received her Masters of Science in Nursing from Simmons College. Before joining Coastal Medical, she worked at Massachusetts General Hospital and in White 10’s General Medicine Inpatient Unit. Kimberly currently works in Coastal Medical’s Garden City office.

Kathleen Ricci, PA

Kathleen Ricci graduated from the Massachusetts College of Pharmacy and Health Sciences with a Master of Science in Physician Assistant Studies (MPAS).  Katie comes to Coastal Medical with a strong background in emergency and urgent care.

Karen H. Stevenson, MD

Dr. Karen Stevenson received her medical education from New Jersey Medical School in 1984. She completed her residency at Rhode Island Hospital in 1987, and prior to joining Coastal, practiced at Park Internal Medicine Group.

Jeffry C. Winters, MD

Dr. Jeffry Winters is a graduate of St. Louis University School of Medicine and completed his residency in Internal Medicine at Rhode Island Hospital.  He was a founding member of Coastal Medical, joining in 1995.