Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Steffi Sathiyaraj, MD

Nephrology Physician in Mcallen, TX · enumerated 2019 · practices at South Texas Kidney Specialists, P.A..

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

National Provider Identifier

1225590904

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Registry record

Entity type Individual (Type 1)

Name Steffi Sathiyaraj

Credential MD

Sex Female

Practice address 1901 S 1st St Ste 600, Mcallen, TX, 78503

Phone (956) 631-6136

Fax (956) 631-1250

Enumeration date Apr 2, 2019

Last updated in NPPES Jul 9, 2024

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License U8816 (TX) Primary

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

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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Steffi Sathiyaraj's NPI record?

Cross-check NPI 1225590904 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1225590904 active?

Yes, as of the latest NPPES snapshot, NPI 1225590904 is active (record last updated 2024-07-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-09.