NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Adam Greenberg

Physical Therapist in La Mesa, CA · enumerated 2021 · practices at J Nelson Chiropractic Corporation.

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

National Provider Identifier

1649841412

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Registry record

Entity type Individual (Type 1)
Name Adam Greenberg
Sex Male
Practice address La Mesa, CA, 91942
Phone (619) 460-0137
Fax (619) 460-0139
Enumeration date Jul 2, 2021
Last updated in NPPES Jul 2, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 300412 (CA) Primary

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.

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Frequently asked questions

How do I verify Adam Greenberg's NPI record?
Cross-check NPI 1649841412 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1649841412 active?
Yes, as of the latest NPPES snapshot, NPI 1649841412 is active (record last updated 2021-07-02).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-02.