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

Mr. Avinash Kashyap Viswanathan, MD

Individual provider Internal Medicine Physician · NPI 1639487911

Mr. Avinash Kashyap Viswanathan, MD is an Internal Medicine in Springfield, Illinois. Qualified in 2010, 16 years ago. Practices with Memorial Physician Services, a 158-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
16
Licensed in
IL
In the registry since
2010
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3132 Old Jacksonville Rd Ste 150
Springfield, IL 62704-7400
Phone: (217) 862-0741
Fax: (217) 862-0858
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036.133495 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 336.094733 (IL)

Record details

NPI number1639487911
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 20, 2010
Last updated in NPPESMay 23, 2014

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2010 (16 years in practice)
Group practice Memorial Physician Services — 158 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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