Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Lynessa A Alonso, D.O.

Pediatrics Physician in Washington, IL · enumerated 2006.

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

National Provider Identifier

1679665020

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Registry record

Entity type Individual (Type 1)

Name Lynessa A Alonso

Credential D.O.

Sex Female

Practice address 10 Saint Clare Ct, Washington, IL, 61571

Phone (309) 886-4003

Enumeration date Sep 29, 2006

Last updated in NPPES Feb 24, 2012

Taxonomy & licenses

207RA0000X Adolescent Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 036-111658 (IL) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 036111658 (IL) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
P00736603	Other	-	RAILROAD MEDICARE
036111658	Medicaid	IL	-
000000597576	Other	-	NCMA/ANTHEM
7100079490	Medicaid	KY	-
000023044Z	Other	-	NCMA/HUM
101430	Other	-	NCMA/SIHO

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 specialty is Lynessa Alonso?

Lynessa Alonso is registered in NPPES with the primary taxonomy of Pediatrics 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-24.