Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Richard Do Nguyen, M.D.

Internal Medicine Physician in Mattoon, IL · enumerated 2015.

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

National Provider Identifier

1053793174

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Registry record

Entity type Individual (Type 1)

Name Richard Do Nguyen

Credential M.D.

Sex Male

Practice address 1000 Health Center Dr, Mattoon, IL, 61938

Phone (217) 235-4325

Fax (217) 238-4290

Enumeration date Jun 25, 2015

Last updated in NPPES Oct 25, 2018

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 036-147563 (IL) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 4301108106 (MI) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036.147563 (IL) 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

What is the NPI number for Richard Nguyen?

The National Provider Identifier (NPI) for Richard Nguyen is 1053793174, a Type 1 (individual) record in the CMS NPPES registry.

Where does Richard Nguyen practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-25.