Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary-Jean Fanelli, MD, MBA
Pediatrics Physician in Newton, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1780650267
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Registry record
Entity type Individual (Type 1)
Name Mary-Jean Fanelli
Credential MD, MBA
Sex Female
Practice address 2014 Washington St, Newton-Wellesley Hospital, Newton, MA, 02462
Phone (617) 243-6565
Fax (617) 243-6981
Enumeration date Feb 24, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Where does Mary-Jean Fanelli practice?
The practice location on file with NPPES is in Newton, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mary-Jean Fanelli?
The National Provider Identifier (NPI) for Mary-Jean Fanelli is 1780650267, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Jennifer Balukonis Nurse Practitioner · Newton, MA NPI 1144210261 Judy Yang Internal Medicine Physician · Newton, MA NPI 1205818721 David Wyler Internal Medicine Physician · Newton, MA NPI 1689657686 Tarik Alkasab Diagnostic Radiology Physician · Newton, MA NPI 1154305803 Mary Jane Estrada-Lyder Nurse Practitioner · Newton, MA NPI 1427033257 Teresa Cahill Body Imaging Physician · Newton Lower Falls, MA NPI 1417935214 Daniel Mcdonald Diagnostic Radiology Physician · Newton, MA NPI 1053399857 Joseph Ferrucci Diagnostic Radiology Physician · Newton, MA NPI 1831177617
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.