Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Thomas Martin Desimio, RN

Infusion Therapy Registered Nurse in Hercules, CA · enumerated 2006.

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

National Provider Identifier

1922102318

Verified

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Registry record

Entity type Individual (Type 1)

Name Mr. Thomas Martin Desimio

Credential RN

Sex Male

Practice address 2126 Drake Ln, Hercules, CA, 94547

Phone (510) 220-0706

Fax (510) 724-1576

Enumeration date Sep 7, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

163WI0500X Infusion Therapy Registered Nurse Nursing Service Providers · License 552866 (CA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

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

What is the NPI number for Thomas Desimio?

The National Provider Identifier (NPI) for Thomas Desimio is 1922102318, a Type 1 (individual) record in the CMS NPPES registry.

Where does Thomas Desimio practice?

The practice location on file with NPPES is in Hercules, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.