Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Joel Joseph Feldman, MD
Surgery Physician in Cambridge, MA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1780674804
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Registry record
Entity type Individual (Type 1)
Name Dr. Joel Joseph Feldman
Credential MD
Sex Male
Practice address 300 Mount Auburn St, Ste 304, Cambridge, MA, 02138
Phone (617) 661-5998
Fax (617) 661-6438
Enumeration date Oct 28, 2005
Last updated in NPPES Sep 11, 2025
Taxonomy & licenses
208200000X Plastic Surgery Physician Allopathic & Osteopathic Physicians · License 39237 (MA) Secondary
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
What is the NPI number for Joel Feldman?
The National Provider Identifier (NPI) for Joel Feldman is 1780674804, a Type 1 (individual) record in the CMS NPPES registry.
Where does Joel Feldman practice?
The practice location on file with NPPES is in Cambridge, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Frederick Ruymann Gastroenterology Physician · Cambridge, MA NPI 1568466316 Eva Gassiraro Internal Medicine Physician · Cambridge, MA NPI 1598762833 Charles Hatem Internal Medicine Physician · Cambridge, MA NPI 1528065877 Lisa Fitzgerald Rheumatology Physician · Cambridge, MA NPI 1881691160 Thomas Caughey Hematology & Oncology Physician · Cambridge, MA NPI 1063419398 Beth Goldman Internal Medicine Physician · Cambridge, MA NPI 1457358798 James Ku Urology Physician · Cambridge, MA NPI 1730188038 Cambridge Urological Associates, Inc. Urology Physician · Cambridge, MA NPI 1164421467
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.