Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Jack Mark, CPO

Prosthetist in Los Angeles, CA · enumerated 2016.

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

National Provider Identifier

1699228619

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Registry record

Entity type Individual (Type 1)

Name Mr. Jack Mark

Credential CPO

Sex Male

Practice address 3160 Geneva St, Los Angeles, CA, 90020

Phone (213) 368-3374

Enumeration date Jul 26, 2016

Last updated in NPPES Jul 26, 2016

Taxonomy & licenses

222Z00000X Orthotist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License CPO01066 (DE) Secondary

224P00000X Prosthetist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License CPO01066 (DE) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1699228619 active?

Yes, as of the latest NPPES snapshot, NPI 1699228619 is active (record last updated 2016-07-26).

How do I verify Jack Mark's NPI record?

Cross-check NPI 1699228619 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 2016-07-26.