Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Jonathan Merritt Weber, PA

Physician Assistant in New Haven, CT · enumerated 2007.

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

National Provider Identifier

1245357391

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Registry record

Entity type Individual (Type 1)

Name Mr. Jonathan Merritt Weber

Credential PA

Sex Male

Practice address 55 Lock Street, Ynh Medical Services PC, New Haven, CT, 06520

Phone (203) 432-0076

Fax (203) 432-7289

Enumeration date Mar 23, 2007

Last updated in NPPES Apr 20, 2011

Taxonomy & licenses

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 000821 (CT) Secondary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 000559 (CT) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA 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

Is NPI 1245357391 active?

Yes, as of the latest NPPES snapshot, NPI 1245357391 is active (record last updated 2011-04-20).

How do I verify Jonathan Weber's NPI record?

Cross-check NPI 1245357391 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-20.