NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Evelin Guillen Leon, MD

Pediatrics Physician in Perth Amboy, NJ · enumerated 2020.

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

National Provider Identifier

1861011231

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Evelin Guillen Leon
Credential MD
Sex Female
Practice address 321 State St, Perth Amboy, NJ, 08861
Enumeration date Apr 15, 2020
Last updated in NPPES Jun 25, 2026

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License W5806 (TX) Secondary
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 25MA11794900 (NJ) 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

Where does Evelin Guillen Leon practice?
The practice location on file with NPPES is in Perth Amboy, NJ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Evelin Guillen Leon?
The National Provider Identifier (NPI) for Evelin Guillen Leon is 1861011231, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-25.