NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Erwin Eduardo Rayo Lopez

Neurological Surgery Physician in San Juan, PR · enumerated 2011.

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

National Provider Identifier

1790074904

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Registry record

Entity type Individual (Type 1)
Name Mr. Erwin Eduardo Rayo Lopez
Sex Male
Practice address San Juan, PR, 00936
Phone (787) 754-0101
Enumeration date Mar 29, 2011
Last updated in NPPES Mar 29, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 179-E (PR) Primary

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

How do I verify Erwin Rayo Lopez's NPI record?
Cross-check NPI 1790074904 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1790074904 active?
Yes, as of the latest NPPES snapshot, NPI 1790074904 is active (record last updated 2011-03-29).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-29.