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

Chacko John Sr.

Registered Respiratory Therapist in Washington, DC · enumerated 2023.

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

National Provider Identifier

1457134041

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Registry record

Entity type Individual (Type 1)

Name Chacko John Sr.

Sex Male

Practice address Washington, DC, 20420

Phone (202) 745-8000

Enumeration date Aug 16, 2023

Last updated in NPPES Aug 16, 2023

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

Taxonomy & licenses

227900000X Registered Respiratory Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License L0002207 (MD) 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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Chacko John?

Chacko John is registered in NPPES with the primary taxonomy of Registered Respiratory Therapist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-16.