Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Jason Gnasigamany, DO

Individual provider Nephrology Physician · NPI 1598388308

Jason Gnasigamany, DO is a Nephrology in Longview, Texas. Graduated from University of Texas Medical School at San Antonio in 2015, 11 years ago. Practices with Southern Kidney Associates PLLC, a 6-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
11
Trained at
University of Texas Medical School at San Antonio
Licensed in
TX
In the registry since
2020
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

3535 N Fourth St Ste 301
Longview, TX 75605-0037
Phone: (903) 234-9992
Fax: (903) 234-8287
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence V7890 (TX)

Record details

NPI number1598388308
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 27, 2020
Last updated in NPPESJuly 3, 2025
Certification dateJuly 3, 2025
Mailing address3535 N Fourth St Ste 301, Longview, TX 75605-0037

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEPHROLOGY
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT SAN ANTONIO
Graduated 2015 (11 years in practice)
Group practice Southern Kidney Associates Pllc — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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