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

Thomas J Larson, MD

Orthopaedic Surgery Physician in Middletown, CT · enumerated 2006 · practices at Orthopedic Associates of Middletown, PC.

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

National Provider Identifier

1588747349

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Registry record

Entity type Individual (Type 1)

Name Thomas J Larson

Credential MD

Sex Male

Practice address Middletown, CT, 06457

Phone (860) 347-7636

Fax (860) 894-1882

Enumeration date Oct 23, 2006

Last updated in NPPES Jan 11, 2010

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

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 042136 (CT) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
001421362	Medicaid	CT	-

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 1588747349 active?

Yes, as of the latest NPPES snapshot, NPI 1588747349 is active (record last updated 2010-01-11).

How do I verify Thomas Larson's NPI record?

Cross-check NPI 1588747349 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 2010-01-11.