NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joseph I Chartor, MD

Pediatrics Physician in Natick, MA · enumerated 2006.

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

National Provider Identifier

1649371931

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Joseph I Chartor
Credential MD
Sex Male
Practice address 233 W Central St, Natick, MA, 01760
Phone (508) 655-7936
Enumeration date Sep 26, 2006
Last updated in NPPES Sep 16, 2008

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 33421 (MA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
2027054 Medicaid MA -

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

Is NPI 1649371931 active?
Yes, as of the latest NPPES snapshot, NPI 1649371931 is active (record last updated 2008-09-16).
How do I verify Joseph Chartor's NPI record?
Cross-check NPI 1649371931 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-16.