DR. MATTHEW SAMUEL LOEWENSTEIN MD
NPI 1215904982
Internal Medicine - Gastroenterology in Cambridge, MA
About Dr. Matthew Samuel Loewenstein Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MATTHEW SAMUEL LOEWENSTEIN MD (NPI 1215904982) is an individual gastroenterology provider in Cambridge, Massachusetts, licensed in Massachusetts (35973) and active in the NPI registry since March 2006.
NPPES Registry Identity
Specialties & Licenses
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Other Identifiers 3
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Matthew Loewenstein's NPI number?
The NPI number for Matthew Loewenstein is 1215904982. It was assigned to this individual provider in the NPPES registry on March 2, 2006.
Where is Matthew Loewenstein located?
Matthew Loewenstein practices at 300 Mt Auburn St Suite 507, Cambridge, MA 02238. The listed phone number is (617) 876-5674.
What is Matthew Loewenstein's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
When was this NPI record last updated?
The NPPES record for Matthew Loewenstein was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.
