Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Suresh Ratnam, MD

Medical Oncology Physician in Mcallen, TX · enumerated 2006 · practices at Oncology Pharmacy Services, Inc.

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

National Provider Identifier

1649217639

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Registry record

Entity type Individual (Type 1)

Name Dr. Suresh Ratnam

Credential MD

Sex Male

Practice address 1901 S 2nd St, Mcallen, TX, 78503

Phone (956) 687-5150

Fax (956) 687-9546

Enumeration date May 31, 2006

Last updated in NPPES Dec 9, 2021

Taxonomy & licenses

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License K0165 (TX) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
000L7773	Medicaid	NM	-
136454912	Medicaid	TX	-
134716304	Medicaid	TX	-
8R1530	Other	TX	BLUE CROSS OF TEXAS
134716305	Medicaid	TX	-
134716306	Other	TX	CSHCN

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

Where does Suresh Ratnam practice?

The practice location on file with NPPES is in Mcallen, TX. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Suresh Ratnam?

The National Provider Identifier (NPI) for Suresh Ratnam is 1649217639, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-09.