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

Dr. Neilayan Sen, MD

Individual provider Radiation Oncology Physician · NPI 1407101314

Dr. Neilayan Sen, MD is a Radiation Oncology in Chicago, Illinois. Qualified in 2012, 14 years ago. Practices with Radiation Oncology Associates, PA, a 2-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
14
Licensed in
IL
In the registry since
2012
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

1653 W Congress Pkwy
Chicago, IL 60612-3833
Phone: (312) 942-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 125.061125 (IL)

Record details

NPI number1407101314
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 17, 2012
Last updated in NPPESJuly 17, 2012

Medicare enrollment

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

Medicare specialtyRADIATION ONCOLOGY
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice Radiation Oncology Associates, Pa — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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