Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jenny Y Yoo, M.D.

Surgery Physician in Mchenry, IL · enumerated 2009.

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

National Provider Identifier

1912133836

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Registry record

Entity type Individual (Type 1)

Name Jenny Y Yoo

Credential M.D.

Sex Female

Practice address 4309 W Medical Center Dr Ste B202, Mchenry, IL, 60050

Phone (815) 338-6600

Enumeration date Jun 5, 2009

Last updated in NPPES Mar 18, 2019

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 4301094463 (MI) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 036141711 (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
036141711	Other	IL	STATE LICENSE

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 Jenny Yoo?

Jenny Yoo is registered in NPPES with the primary taxonomy of Surgery 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 2019-03-18.