Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Subramony Subramonia Iyer, MD

Individual provider Internal Medicine Physician · NPI 1558551952

Dr. Subramony Subramonia Iyer, MD is a Hematology/Oncology in Springfield, Massachusetts. Qualified in 1994, 32 years ago. Practices with Mercy Medical Group Inc, a 17-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
32
Licensed in
MA
In the registry since
2007
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

271 Carew St
Springfield, MA 01104
Phone: (413) 794-8120
Fax: (413) 794-1767
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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 253528 (MA)

Record details

NPI number1558551952
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 31, 2007
Last updated in NPPESApril 10, 2014

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolOTHER
Graduated 1994 (32 years in practice)
Group practice Mercy Medical Group Inc — 17 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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