Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Matthew Edward Johnson, M.D.

Radiation Oncology Physician in Saint Charles, MO · enumerated 2010.

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

National Provider Identifier

1952612020

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Registry record

Entity type Individual (Type 1)

Name Dr. Matthew Edward Johnson

Credential M.D.

Sex Male

Practice address 1475 Kisker Rd Ste 180, Saint Charles, MO, 63304

Phone (636) 442-7300

Enumeration date Jun 23, 2010

Last updated in NPPES Jun 26, 2024

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 036140409 (IL) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License MD446623 (PA) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 2015001562 (MO) 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
1952612020	Medicaid	MO	-

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 specialty is Matthew Johnson?

Matthew Johnson is registered in NPPES with the primary taxonomy of Radiation Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Osama Qubaiah Hematology & Oncology Physician · Saint Charles, MO NPI 1710027792 Christiane Zoghbi Hematology & Oncology Physician · Saint Charles, MO NPI 1528256237 Joseph Waller Radiation Oncology Physician · Saint Charles, MO NPI 1376778258 Filadelfiya Zvinovski Hematology & Oncology Physician · Saint Charles, MO NPI 1699206185 Kristin Callaway Oncology Pharmacist · Saint Charles, MO NPI 1083240857

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-26.