Subramony Subramonia Iyer

Subramony Subramonia Iyer, MD

Hematology, Hematology & Oncology, Medical Oncology

Provider Groups

  • Trinity Health Of New England Care Alliance

  • Trinity Health Of New England Medical Group

Primary Contact

413-748-7370
Provider Groups
  • Trinity Health Of New England Care Alliance

  • Trinity Health Of New England Medical Group

Primary Contact
413-748-7370

Services & Specialties

Areas of Specialization

  • Hematology
  • Hematology & Oncology
  • Medical Oncology

Clinical Interests

Conditions Treated

  • Caritas
  • Medical Oncology
  • Hematology and Oncology

Locations & Contact

Primary Location

Mercy Medical Center - Oncology/Hematology

271 Carew St
Springfield, MA 01104

Mercy Medical Center - Sister Caritas Cancer Center

271 Carew St
Springfield, MA 01104

About

Subramony Subramonia-Iyer, MD, is a board-certified medical oncologist and hematologist who brings a wealth of experience from across multiple specialties and work settings, including a stint with the World Health Organization and several years in public health administration in England and Wales. He has been in practice at Pioneer Valley Oncology and Hematology for more than a decade and feels privileged to have helped hundreds of patients and families face the challenges of cancer treatment. He is a member of the American Society of Clinical Oncology and is board-certified in three specialties.

Dr. Subramonia-Iyer's goal is to be present for his patients when they need him the most, assist them in their understanding of their disease, and to make smart decisions that work for them by improving longevity and quality of life.

Additional Resources

Education & Certifications

Education

Education:
University of Kerala (1995)

Residency:
Hurley Medical Center (2010)

Fellowship:
Grand Rapids Area Medical Education Center (2012)

Fellowship:
University of Massachusetts Medical School (2013)

Fellowship:
UMass Chan Medical School (2013)

Board Certifications

Hematology, American Board of Internal Medicine Subspecialty Hematology (2013)

Medical Oncology, American Board of Internal Medicine Subspecialty Medical Oncology (2013)

American Board of Internal Medicine (2010)

Provider Groups

Trinity Health Of New England Care Alliance

Trinity Health Of New England Medical Group

Provider Ratings

The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy. Learn More >

4.9 out of 5

(281 ratings)

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

30 Reviews

10/19/2026

He's attentive funny and very professional

10/08/2026

I wish all doctors were like him. He’s always explain things about my condition where my treatment was going. He’s followed up on every single thing and my test that he’s had me take. He’s really a very kind caring man with doctor in front of his name.

10/08/2026

Very experienced doctor in his field

10/07/2026

Excelente profesional

10/05/2026

Can't imagine a better person to have as my doctor!

10/05/2026

He inspires confidence.

09/29/2026

Dr. Is very thorough

09/24/2026

When he goes, I go with him.

09/14/2026

Thoughtful and through

09/14/2026

Dr Iyer is excellent and very knowledgeable

09/11/2026

Outstanding provider

09/11/2026

Dr Iyer is fantastic

09/10/2026

well knowledged doctor and comfortable to speak and understand the situation, including ensuring the process and outcome.

09/08/2026

Compassion and trust !!

09/04/2026

He is the definition of what a doctor should be.

09/04/2026

Dr Yer its been taking care of me for the last 7 years! I could not ask for better.

08/17/2026

Excellent doctor

06/03/2026

Great visit.

03/13/2026

Excellent

02/20/2026

Gran doctor mejor yo creo que difícil de encontrar

01/28/2026

Would like to have additional information regarding my appointment and discussion on the " after visit summary ".

01/09/2026

Very good

12/22/2025

Very professional

12/16/2025

Excellent doctor. Would recommend.

12/16/2025

Compassionate, caring and very knowledgeable provider .

12/09/2025

Cold not ask for a better Doctor.

12/09/2025

He is a compassionate and empathetic doctor who treats his patients with respect.

12/05/2025

I highly recommend Dr. Iyer I am so grateful he is my oncologist

12/05/2025

I feel The doctor is very attentive and considerate to my concerns.

11/19/2025

Been seeing SUBRAMONIA-IYER SUBRAMONY for 3 years and always excellemt support along with Nurse Shauna
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