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

Dr. Nishok Karthikeyan, MD

Individual provider Internal Medicine Physician · NPI 1376030049

Dr. Nishok Karthikeyan, MD is an Internal Medicine in Cleveland, Ohio. Graduated from Northeastern Ohio University College of Medicine in 2018, 8 years ago. Practices with Cleveland Clinic, a 6,935-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
8
Trained at
Northeastern Ohio University College of Medicine
Licensed in
OH
In the registry since
2018
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

9500 Euclid Ave
Cleveland, OH 44195
Phone: (440) 292-6404
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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 35.141897 (OH)
Internal Medicine Physician Taxonomy 207R00000X · Licence 35-141897 (OH)

Record details

NPI number1376030049
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 18, 2018
Last updated in NPPESJune 3, 2024
Certification dateJune 3, 2024

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolNORTHEASTERN OHIO UNIVERSITY COLLEGE OF MEDICINE
Graduated 2018 (8 years in practice)
Group practice Cleveland Clinic — 6935 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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