












Participating Providers


Providence Office
Adult Medicine: (401) 793-8400
Warwick Office
Adult Medicine: (401) 793-8520









Heidi Dorris, MD
Providence Internal Medicine
Education
Brown University, Providence, RI
1984 ~ B.A., Engineering
1991 ~ Postbaccalaureate
1996 ~ M.D.
Postgraduate Education
Internship/Residency
Brown University, Providence, RI
1996-1999 ~ General Medicine
Hospital Privileges
The Miriam Hospital, Providence, RI
1999 - Present
Rhode Island Hospital, Providence, RI
1999 - Present
Professional Licensure
Medical License, State of RI
Board Certified ~ Internal Medicine
Joan Goddard. MD
Providence Internal Medicine
Education
Brown University, Providence, RI
1976 ~ B.S
1979 ~ M.D.
Postgraduate Education
Internship/Residency
Berkshire Medical Center, Pittsfield, MA
PGY - 1, 2, 3
1972-1982 ~ Internal Medicine
Hospital Privileges
The Miriam Hospital, Providence, RI
1986 - Present
Rhode Island Hospital, Providence, RI
1986 - Present
Professional Licensure
Medical License, State of RI
Board Certified ~ Internal Medicine
William Mason, MD
Providence Internal Medicine
Education
Harvard College, Cambridge, MA
1967 ~ B.S.
University of Cincinnati, Cincinnati, OH
1974 ~ M.D.
Postgraduate Education
Internship/Residency
Rhode Island Hospital, Providence, RI
1974-1977 ~ General Medicine
Fellowship
Roger Williams Hospital, Providence, RI
1977-1979 ~ Rheumatology
Hospital Privileges
The Miriam Hospital, Providence, RI
1986 - Present
Rhode Island Hospital, Providence, RI
1986 - Present
Professional Licensure
Medical License, State of RI
Board Certified ~ Internal Medicine
Board Certified ~ Rheumatology
Robert Mathieu, MD
Providence Internal Medicine
Education
Tufts University, Medford, MA
1979 ~ B.S.
Tufts Univ. School of Medicine, Boston, MA
1984 ~ M.D.
Postgraduate Education
Internship
The Miriam Hospital, Providence, RI
1984-1985 ~ Internal Medicine
Davie's Medical Center, Sacromento, CA
1986-1988 ~ Internal Medicine
Residency
Tufts NE Medical Center Hosp., Boston, MA
1985-1986 ~ Anesthesiology
Hospital Privileges
The Miriam Hospital, Providence, RI
1993 - Present
Rhode Island Hospital, Providence, RI
1993 - Present
Professional Licensure
Medical License, State of RI
Board Certified ~ Internal Medicine
Robyn Ostapow, PA-C
Providence Internal Medicine
Education
Sacred Heart University, Fairfield, CT
2002 ~ B.S., Psychology
Lockhaven Univ. of Pennsylvania., PA
2005 ~ P.A.-C.
Professional Licensure
National Commission of Certified
Physician Assistants
Rhode Island State Registered
Elizabeth Buckley, PA-C
Providence Internal Medicine
Education
University of North Carolina, Greensboro, NC
1970 ~ B.A.
Wake Forest University, Winston-Salem, NC
1974 ~ M.A., Biology
Bowman Gray School of Medicine, NC
1977 ~ P.A.-C
Professional Licensure
National Commission of Certified
Physician Assistants
Rhode Island State Registered

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Diane Siedlecki, MD
Providence Internal Medicine
Education
Niagara University, Niagara Falls, NY
1976 ~ B.S., Nursing
Rutgers University, Newark, NJ
1983 ~ Pre-Med
Georgetown School of Medicine, Wash., DC
1983 ~ M.D.
Postgraduate Education
Internship/Residency
Albert Einstein College of Medicine, Bronx, NY
1983-1986 ~ Internal Medicine
Hospital Privileges
The Miriam Hospital, Providence, RI
1991 - Present
Rhode Island Hospital, Providence, RI
1991 - Present
Professional Licensure
Medical License, State of RI
Board Certified ~ Internal Medicine
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Caroline Troise, MD
Providence Internal Medicine
Education
St. John's University, Jamaica, NY
1971 ~ B.S., Chemistry
Harvard University, Cambridge, MA
1978 ~ Ph.D. Organic Chemistry
Miami School of Medicine, Miami, FL
1980 ~ M.D.
Postgraduate Education
Internship/Residency
Rhode Island Hospital, Providence, RI
1980-1983 ~ Internal Medicine
Hospital Privileges
The Miriam Hospital, Providence, RI
1983 - Present
Rhode Island Hospital, Providence, RI
1983 - Present
Professional Licensure
Medical License, State of RI
Board Certified ~ Internal Medicine






Rex Appenfeller, MD
Lincoln Internal Medicine
Education
Universary of Kansas, Lawrence, KS
1976 ~ B.A., Microbiology
Kansas School of Medicine, Kansas City, KS
1979 ~ M.D.
Postgraduate Education
Internship/Residency
Roger Williams General Hospital, Prov., RI
1979-1982 ~ Internal Medicine
1982-1983 ~ Chief Residency Internal Med.
Hospital Privileges
The Miriam Hospital, Providence, RI
1994 - Present
Rhode Island Hospital, Providence, RI
1994 - Present
Professional Licensure
Medical License, State of RI
Board Certified ~ Internal Medicine
Robert Cohen, MD
Lincoln Internal Medicine
Education
Brown University, Providence, RI
1976 ~ B.A., Biochemistry
New York Medical College, Valhalla, NY
1980 ~ M.D.
Postgraduate Education
Internship/Residency
Rhode Island Hospital, Providence, RI
1980-1983 ~ Internal Medicine
Hospital Privileges
The Miriam Hospital, Providence, RI
1986 - Present
Rhode Island Hospital, Providence, RI
1986 - Present
Professional Licensure
Medical License, State of RI
Board Certified ~ Internal Medicine
Kathleen Henderson, MD
Lincoln Internal Medicine
Education
College of Holy Cross, Worcester, MA
1980 ~ B.A.
Robert Wood Johnson School of Med., Piscataway, NJ
1985 ~ M.D.
Postgraduate Education
Internship/Residency
Medical College of Virginia, Richmond, VA
1985-1988 ~ Internal Medicine
Hospital Privileges
The Miriam Hospital, Providence, RI
1988 - Present
Rhode Island Hospital, Providence, RI
1988 - Present
Professional Licensure
Medical License, State of RI
Board Certified ~ Internal Medicine
Jennifer Raney, MD
Lincoln Internal Medicine
Education
Williams College, Williamstown, MA
1993 ~ B.A., Biology
Jefferson Medical College of
Thomas Jefferson University, Philadelphia, PA
1999 ~ M.D.
Postgraduate Education
Internship/Residency
Memorial Hospital of RI, Pawtucket, RI
1999-2002 ~ Family Practice Medicine
Hospital Privileges
The Miriam Hospital, Providence, RI
2006 - Present
Rhode Island Hospital, Providence, RI
2006 - Present
Professional Licensure
Medical License, State of RI
Board Certified ~ Family Practice Medicine
George Connors, PA-C
Lincoln Internal Medicine
Education
University of Rhode Island, Kingston, RI
1976 ~ B.S., Nursing
Yale Univ. School of Med., New Haven, CT
1983 ~ PA-C
Professional Licensure
National Commission of Certified
Physician Assistants
Rhode Island State Registered



Robert Ellison, MD
Warwick Internal Medicine
Education
New York University, Bronx, NY
1968 ~ B.A., History
Albany Medical College, Albany, NY
1972 ~ M.D.
Postgraduate Education
Internship/Residency
Nausau County Medical Center, East Meadow, NY
1972-1975 ~ Internal Medicine
Fellowship
Rhode Island Hospital, Providence, RI
1975-1977 ~ Clinical Hematology
Hospital Privileges
The Miriam Hospital, Providence, RI
1978 - Present
Rhode Island Hospital, Providence, RI
1978 - Present
Professional Licensure
Medical License, State of RI
Board Certified ~ Internal Medicine
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Nicholas Grumbach, MD
Warwick Internal Medicine
Education
Bowdoin College, Brunswick, NE
1988 ~ B.A., Biology and History
Mount Sinai School of Medicine, New York, NY
1996 ~ M.D.
Postgraduate Education
Internship/Residency/Chief Residency
Brown University School of Medicine, Providence, RI
Rhode Island Hospital/Hasbro Children's Hospital
1996-2000 ~ Combined Internal Medicine/Pediatrics
Hospital Privileges
The Miriam Hospital, Providence, RI
2006 - Present
Rhode Island Hospital, Providence, RI
2006 - Present
Professional Licensure
Medical License, State of RI
Board Certified ~ Internal Medicine
Board Certified ~ General Pediatric Medicine
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Gregg Oehler, PA-C
Warwick Internal Medicine
Education
State University of NY and Stony Brook, NY
1980 ~ B.S., Health Sciences
1983 ~ PA-C
Professional Licensure
National Commission of Certified
Physician Assistants
Rhode Island State Registered
John Kochanski, PA-C
Warwick Internal Medicine
Education
Rutgers University, New Jersey
1970 ~ B.A., Biology
Northeastern University, Boston, MA
1976 ~ PA-C
Professional Licensure
National Commission of Certified
Physician Assistants
Rhode Island State Registered
Associates by location: Providence | Lincoln | Warwick
Associates by location: Providence | Lincoln | Warwick
Associates by location: Providence | Lincoln | Warwick