Guillermo Lazo-Diaz, MD

Medical oncologist in McAllen, Texas · NPI 1760421101

Guillermo Lazo-Diaz is one of 4 medical oncologists practicing in McAllen, Texas. See all medical oncologists in Texas. Guillermo Lazo-Diaz practices with Texas Oncology PA.

Registry record (NPPES)

NPI
1760421101
Type
Type 1 · Individual
Primary taxonomy
Internal Medicine, Medical Oncology · 207RX0202X
Address on file
1901 S 2nd St
McAllen, TX 78503-1271
(956) 687-5150
Enumerated
Jun 4, 2006
Record last updated
Dec 11, 2008
License states listed
TX

Medicare (CMS)

Enrollment
Medicare-enrolled in TX
Medical Oncology
Revalidation due
No date set by CMS

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Practice locations

More medical oncologists in McAllen

Updated August 2026. Practice locations and specialty come from the CMS Doctors and Clinicians file, the registry record from NPPES, and enrollment from CMS Medicare enrollment files. NPI records are corrected at the source, through NPPES.