Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alex H You, M.D.

Emergency Medicine Physician in Brooklyn, NY · enumerated 2012.

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

National Provider Identifier

1871854307

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Registry record

Entity type Individual (Type 1)

Name Dr. Alex H You

Credential M.D.

Sex Male

Practice address 121 Dekalb Ave, Brooklyn, NY, 11201

Phone (718) 250-8000

Enumeration date May 31, 2012

Last updated in NPPES Jul 10, 2026

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License A145534 (CA) Secondary

2083B0002X Obesity Medicine (Preventive Medicine) Physician Allopathic & Osteopathic Physicians · License 36.142014 (IL) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 036.142014 (IL) Primary

207RB0002X Obesity Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License A145534 (CA) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 25MA09601800 (NJ) Secondary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License A145534 (CA) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 2746551 (NY) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License MD451919 (PA) Secondary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 036142014 (IL) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

Is NPI 1871854307 active?

Yes, as of the latest NPPES snapshot, NPI 1871854307 is active (record last updated 2026-07-10).

How do I verify Alex You's NPI record?

Cross-check NPI 1871854307 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 2026-07-10.