Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Joseph Marcel-Saint-Louis Demertine, MD

Individual provider General Practice Physician · NPI 1427007822

Dr. Joseph Marcel-Saint-Louis Demertine, MD is a General Practice Physician in Boston, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts and New York.

Licensed in
MA, NY
In the registry since
2006
Specialties on file
7
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

581 Boylston St 800
Boston, MA 02116-3608
Phone: (617) 247-1400
Fax: (617) 247-1411
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Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 233842 (NY)
General Practice Physician Taxonomy 208D00000X · Licence 76898 (MA)
Public Health & General Preventive Medicine Physician Taxonomy 2083P0901X · Licence 76898 (MA)
Geriatric Medicine (Family Medicine) Physician Taxonomy 207QG0300X · Licence 76898 (MA)
Hospitalist Physician Taxonomy 208M00000X · Licence 76898 (MA)
Family Medicine Physician Taxonomy 207Q00000X · Licence 76898 (MA)
Emergency Medical Services (Emergency Medicine) Physician Taxonomy 207PE0004X · Licence 76898 (MA)

Record details

NPI number1427007822
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 10, 2006
Last updated in NPPESFebruary 22, 2017

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