Provider Profile
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License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
HC 04 BOX 15114-2
Arecibo, PR 00612
Guillermo Montero is listed at Hc 04 Box 15114-2, Arecibo, PR 00612. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (787) 309-6142. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Guillermo Montero's National Provider Identifier is 1821830282. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Guillermo Montero has 2+ years experience. Registered with an NPI since 2024. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Not yet. This profile is built from public federal data and has not been confirmed by Guillermo Montero. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.