Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Stephen Baird, MD

Internal Medicine Physician in Glen Ellyn, IL · enumerated 2008.

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

National Provider Identifier

1851555619

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Registry record

Entity type Individual (Type 1)

Name Dr. John Stephen Baird

Credential MD

Sex Male

Practice address 885 Roosevelt Rd, Glen Ellyn, IL, 60137

Phone (630) 384-6330

Fax (630) 384-6339

Enumeration date Jul 10, 2008

Last updated in NPPES Feb 6, 2018

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 125050970 (IL) 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
487450	Other	IL	MEDICARE GROUP PTAN
036122379	Medicaid	IL	-

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

Is NPI 1851555619 active?

Yes, as of the latest NPPES snapshot, NPI 1851555619 is active (record last updated 2018-02-06).

How do I verify John Baird's NPI record?

Cross-check NPI 1851555619 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-02-06.