Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Thompson

Physical Therapy Assistant in Greenwich, CT · enumerated 2020 · practices at Greenwich Adult Day Care, Inc..

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

National Provider Identifier

1013541481

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Registry record

Entity type Individual (Type 1)

Name Mark Thompson

Sex Male

Practice address 70 Parsonage Rd, Greenwich, CT, 06830

Phone (203) 618-4200

Enumeration date Feb 25, 2020

Last updated in NPPES Feb 25, 2020

Taxonomy & licenses

225200000X Physical Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 000679 (CT) 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 NPI 1013541481 active?

Yes, as of the latest NPPES snapshot, NPI 1013541481 is active (record last updated 2020-02-25).

How do I verify Mark Thompson's NPI record?

Cross-check NPI 1013541481 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 2020-02-25.