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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. ROBERT JOSEPH LEON GUERRERO M.D.
NPI 1972564219
Specialist in Tamuning, GU

Active since March 28, 2006
548 SOUTH MARINE CORPS DRIVE, TAMUNING, GU 96913(671) 646-5824(671) 647-3546 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Robert Joseph Leon Guerrero M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ROBERT JOSEPH LEON GUERRERO M.D. (NPI 1972564219) is an individual specialist in Tamuning, Guam and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1972564219
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameDR. ROBERT JOSEPH LEON GUERREROCredential: M.D.
Location Address548 SOUTH MARINE CORPS DRIVETamuning, GU 96913
Mailing AddressPo Box 6578Tamuning, GU 96931-6578 · (671) 646-6956 · Fax (671) 647-3546
Phone(671) 646-5824
Fax(671) 647-3546
Sole ProprietorNo
Enumeration DateMarch 28, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1972564219 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

Other Providers at the Same Location NPPES 16

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. DENNIS ANTONIO A SARMIENTO M.D.
Pediatrics
548 SOUTH MARINE CORPS DRIVE
TAMUNING, GU 96913
Guam (671) 646-5825
MR. WALTER EDWARD STRATTON PA-C
Physician Assistant
548 SOUTH MARINE CORPS DRIVE
TAMUNING, GU 96913
Guam (671) 646-5824
DR. DAVID MICHAEL MUDD M.D.
Radiologic Technologist (Radiography)
548 SOUTH MARINE CORPS DRIVE
TAMUNING, GU 96913
Guam (671) 646-5824
TAKECARE INSURANCE COMPANY INC
Durable Medical Equipment & Medical Supplies (Parenteral & Enteral Nutrition)
548 SOUTH MARINE CORPS DRIVE
TAMUNING, GU 96913
Guam (671) 646-5825
DR. MARIA EDNA VILLACORTA SANTOS M.D.
Specialist
548 SOUTH MARINE CORPS DRIVE
TAMUNING, GU 96913
Guam (671) 646-5824
MRS. CATHLEEN A. DISTOR CNM
Advanced Practice Midwife
548 SOUTH MARINE CORPS DRIVE
TAMUNING, GU 96913
Guam (671) 646-5824
MR. JAY JOSEPH MCDONALD O.D.
Optometrist
548 SOUTH MARINE CORPS DRIVE
TAMUNING, GU 96913
Guam (671) 646-5824
DR. JAMES GREGORY FLEMING M.D.
Specialist
548 SOUTH MARINE CORPS DRIVE
TAMUNING, GU 96913
Guam (671) 646-5824

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Robert Leon Guerrero's NPI number?

The NPI number for Robert Leon Guerrero is 1972564219. It was assigned to this individual provider in the NPPES registry on March 28, 2006.

Where is Robert Leon Guerrero located?

Robert Leon Guerrero practices at 548 South Marine Corps Drive, Tamuning, GU 96913. The listed phone number is (671) 646-5824.

What is Robert Leon Guerrero's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

When was this NPI record last updated?

The NPPES record for Robert Leon Guerrero was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.