Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Greg Edward Sharon, M.D.,

Allergy & Immunology Physician in Bloomingdale, IL · enumerated 2005.

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

National Provider Identifier

1619950250

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Registry record

Entity type Individual (Type 1)

Name Dr. Greg Edward Sharon

Credential M.D.,

Sex Male

Practice address 303 E Army Trail Rd, Ste # 403, Bloomingdale, IL, 60108

Phone (630) 894-7083

Fax (630) 894-9472

Enumeration date Nov 29, 2005

Last updated in NPPES Oct 1, 2007

Taxonomy & licenses

207KA0200X Allergy Physician Allopathic & Osteopathic Physicians · License 036067184 (IL) Secondary

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 036067184 (IL) Primary

207RA0201X Allergy & Immunology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 036067184 (IL) Secondary

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
036067184	Medicaid	IL	-
5254328	Other	IL	AETNA
0280127	Other	IL	UNITED
0300003362	Other	IL	RAILROAD MEDICARE
363765151	Other	IL	FEIN
2215630	Other	IL	BCBS

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

How do I verify Greg Sharon's NPI record?

Cross-check NPI 1619950250 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1619950250 active?

Yes, as of the latest NPPES snapshot, NPI 1619950250 is active (record last updated 2007-10-01).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-01.