NPI
Medical Oncologists in Mcallen, TX
8 medical oncologists in Mcallen, TX in the October 12, 2026 NPPES file, by primary taxonomy (Internal Medicine, Medical Oncology). Each row shows the credential, practice address, phone, and NPI.
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License: a US government work, in the public domain (Public Domain Mark 1.0).
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Every provider listed as Internal Medicine, Medical Oncology near your ZIP
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Medical Oncologists in Mcallen
1 to 8 of 8
- 1760421101Guillermo Lazo-Diaz, MD · 1901 S 2nd St, Mcallen TX 78503 · Phone (956) 687-5150 · Fax (956) 687-9546
- 1528067469Joseph Litam, MD · 1901 S Second St, Mcallen TX 78503 · Phone (956) 687-5150 · Fax (956) 687-9546
- 1346282209Billie Marek, MD · 1901 S 2nd St, Mcallen TX 78503 · Phone (956) 687-5150 · Fax (956) 687-9546
- 1023233756Diane Duyen Nguyen, DO · 205 E Toronto Ave, Mcallen TX 78503 · Phone (956) 296-3990 · Fax (956) 665-6837
- 1629843651Nova Oncology PLLC · 5533 N McColl Road, Mcallen TX 78504 · Phone (956) 317-7966 · Fax (956) 682-0018
- 1649217639Suresh Ratnam, MD · 1901 S 2nd St, Mcallen TX 78503 · Phone (956) 687-5150 · Fax (956) 687-9546
- 1992748586Alvaro Restrepo, MD · 1901 S 2nd St, Mcallen TX 78503 · Phone (956) 687-5150 · Fax (956) 687-9546
- 1689624405Nirupama Shekar, M.D. · 1901 S 2nd St, Mcallen TX 78503 · Phone (956) 687-5150 · Fax (956) 687-9546
Related
- All NPIs in Mcallen, TX
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- Taxonomy code 207RX0202X
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Questions
How many medical oncologists are in Mcallen, TX?
8 active NPI records in the October 12, 2026 NPPES file list Internal Medicine, Medical Oncology as their primary taxonomy and a practice location in Mcallen, TX.
How do I check a provider's NPI number?
Open the NPI number on a row. The record page shows the NPI, status, practice address, phone, specialties, and licenses as NPPES lists them.
Does this list show insurance or network status?
No. NPPES does not publish insurance or network status. This page lists public registry records only.
Source: NPPES NPI Registry, data as of October 12, 2026. Last updated October 12, 2026. How we source data. Corrections: hello@rivvi.ai.