Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Helena Yoo, MD

Emergency Medicine Physician in Brookeville, MD · enumerated 2007.

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

National Provider Identifier

1790831451

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Registry record

Entity type Individual (Type 1)

Name Helena Yoo

Credential MD

Sex Female

Practice address 20509 Riggs Hill Way, Brookeville, MD, 20833

Phone (443) 310-5435

Enumeration date Jan 26, 2007

Last updated in NPPES Jan 29, 2022

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License D0060581 (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
403526700	Medicaid	MD	-
75859903	Other	MD	BLUE SHIELD
75859901	Other	MD	BLUE SHIELD
P00174417	Other	MD	RAILROAD MED

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 1790831451 active?

Yes, as of the latest NPPES snapshot, NPI 1790831451 is active (record last updated 2022-01-29).

How do I verify Helena Yoo's NPI record?

Cross-check NPI 1790831451 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-29.