Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas Craig Merchant, MD

Specialist in Roseville, CA · enumerated 2005.

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

National Provider Identifier

1437146255

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Craig Merchant

Credential MD

Sex Male

Practice address 151 N Sunrise Ave, Suite 1005, Roseville, CA, 95661

Phone (916) 782-1217

Enumeration date Oct 6, 2005

Last updated in NPPES Nov 26, 2013

Taxonomy & licenses

174400000X Specialist Other Service Providers Primary

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

Where does Thomas Merchant practice?

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

What is the NPI number for Thomas Merchant?

The National Provider Identifier (NPI) for Thomas Merchant is 1437146255, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-11-26.