NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stuart Jordan Klein, MD

Internal Medicine Physician in Foxboro, MA · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1275744633

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Stuart Jordan Klein
Credential MD
Sex Male
Practice address 20 Patriot Pl, 4th Florr, Foxboro, MA, 02035
Phone (508) 718-4050
Enumeration date May 25, 2007
Last updated in NPPES May 22, 2009

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 231901 (MA) Primary
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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Stuart Klein practice?
The practice location on file with NPPES is in Foxboro, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Stuart Klein?
The National Provider Identifier (NPI) for Stuart Klein is 1275744633, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-05-22.