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

John Steven Irons, M.D.

Allergy & Immunology Physician in Bethesda, MD · enumerated 2006.

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

National Provider Identifier

1932210366

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Registry record

Entity type Individual (Type 1)
Name John Steven Irons
Credential M.D.
Sex Male
Practice address Bethesda, MD, 20814
Phone (301) 564-4090
Fax (301) 564-1610
Enumeration date Aug 31, 2006
Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License D0044417 (MD) 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
220984 Other MD MDIPA
B605 Other DC CAREFIRST
0532473 Other MD AETNA
3469 Other MD CAREFIRST
05856 Other MD AMERIGROUP

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.

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Frequently asked questions

What is the NPI number for John Irons?
The National Provider Identifier (NPI) for John Irons is 1932210366, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Irons practice?
The practice location on file with NPPES is in Bethesda, MD. 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 2007-07-08.