NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

April Anne Castillo, M.D.

General Practice Physician in New York, NY · enumerated 2013 · practices at Union Square Urgent Medical Care PC.

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

National Provider Identifier

1619314259

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Registry record

Entity type Individual (Type 1)
Name April Anne Castillo
Credential M.D.
Sex Female
Practice address 110 W 14th St, Apt 230, New York, NY, 10011
Phone (212) 242-4333
Enumeration date May 22, 2013
Last updated in NPPES Nov 4, 2016

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 258001-1 (NY) Primary
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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1619314259 active?
Yes, as of the latest NPPES snapshot, NPI 1619314259 is active (record last updated 2016-11-04).
How do I verify April Castillo's NPI record?
Cross-check NPI 1619314259 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 2016-11-04.