NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

John J. Weiter, M.D., Ph.D.

Ophthalmology Physician in Peabody, MA · enumerated 2008 · authorized official John Weiter, President.

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

National Provider Identifier

1811145923

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name John J. Weiter, M.D., Ph.D.
Practice address 39 Cross St Ste 201, Peabody, MA, 01960
Fax (978) 854-5755
Enumeration date Sep 3, 2008
Last updated in NPPES Apr 9, 2024

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 37856 (MA) Primary

Authorized official

Name John Weiter
Title President

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2024-04-09. Verify at npiregistry.cms.hhs.gov.
Where is John J. Weiter, M.D., Ph.D. located?
The practice location on file with NPPES is in Peabody, MA.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-09.