Respiratory Virus and Vaccine Information

HealthBeat

How ‘Lungs in a Box’ and ‘Lungs in a Fridge’ Are Advancing Transplantation

More time and more options make more life-saving surgeries possible.

More HealthBeat Articles

Practice Focus Areas

This medical professional has a particular interest or expertise in:

Education

Medical Education:: MD, Sri Ramachandra Medical College and Research Institute - 2010
Residency:: Mount Auburn Hospital - 2015
Fellowships:: Cleveland Clinic Foundation - 2018

Tufts Medical Center - 2020

Languages Spoken

Tamil

Board Certifications

American Board of Internal Medicine/Critical Care Medicine - Critical Care Medicine (Certified)
American Board of Internal Medicine/Pulmonary Disease - Pulmonary Disease (Certified)

Faculty Profile

Assistant Professor, Feinberg School of Medicine

View Faculty Profile

Practice Groups and Affiliations

Medical Group:: Northwestern Medical Group
Alignment Category:: Northwestern Medicine Physician Network

Northwestern Medicine Regional Medical Group
On Medical Staff At:: Central DuPage Hospital

Northwestern Memorial Hospital

Ratings and Reviews

At Northwestern Medicine, our patient’s feedback is important to us. While different care providers have their own unique strengths, we strive to be as transparent as possible with our quality of care.

Read Ratings FAQs

Overall Rating

4.9

4.9

278 Ratings

Reviews from Patients

22 Reviews

Reviews from Patients

22 Reviews

February 19, 2026

5.0

Excellent - overall.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 11, 2026

5.0

Explained everything and really looked at the issues

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 15, 2026

5.0

Explained treatment and requirements fully

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 15, 2026

5.0

He is amazing. Truly cares for his patients

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 12, 2026

5.0

Very knowledgeable and professional

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 15, 2025

5.0

Good doctor

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 08, 2025

5.0

Thorough approach.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 26, 2025

5.0

Great talk. Patient, friendly and understanding.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 30, 2025

5.0

Always concerned and professional

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 27, 2025

5.0

He is an incredible pulmonologist, but no one is perfect. Very pleased with his attention my care and well being.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 24, 2025

5.0

Dr. Arunachalam was very understanding of my situation. He talked about next steps in the process

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 10, 2025

5.0

He cares about his patients and he follow up to make sure they okay.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 08, 2025

5.0

very informative, gives confidence to the patient

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

August 18, 2025

5.0

Very good medical care from the entire nursing team

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 31, 2025

5.0

Great doctor. He listened patiently and provided detailed information on the processes. He was very thorough.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 30, 2025

5.0

Knowledgeable and thorough

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 26, 2025

5.0

Same as above....very thorough

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 23, 2025

5.0

He listened and understood my concerns.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 18, 2025

5.0

Took his time. Explained everything. Listen and answered all our questions.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

July 04, 2025

5.0

He explained things clearly so that I understood all my options

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 18, 2025

5.0

He was very informative.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

May 13, 2025

5.0

Dr. Arunachalam listen to you with all his attention and goes above and beyond to help where he can

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

Disclosures

Industry Relationships

Consulting

Faculty member and/or their immediate family have engaged in activities such as speaking, advising, consulting, or providing educational programs for the following companies or other entities

Natera, Inc.

External Professional Relationships

Pharmaceutical, device, and biotechnology companies frequently collaborate with basic scientists and physicians within an academic medical center to help advance science and improve patient care. These relationships are important in achieving scientific breakthroughs and in establishing the effectiveness and safety of promising new therapies. In order to assure objectivity in clinical research and patient care, the Northwestern University Feinberg School of Medicine (Feinberg), Northwestern Memorial HealthCare, Children's Hospital of Chicago Medical Center, and the Shirley Ryan AbilityLab have adopted integrity policies that require research and clinical faculty (in full-time, part-time, and unpaid/voluntary categories) to report compensated and uncompensated external industry relationships. Patients are encouraged to discuss these disclosures with their physician as well as to inquire as to how these relationships are overseen by Feinberg. To learn more about our Disclosure and Professional Integrity Policy, and the conflict of interest policies of our joint affiliate survey partners, please go to our Office for Regulatory Affairs Policies page.

View More Disclosures

HealthBeat

How ‘Lungs in a Box’ and ‘Lungs in a Fridge’ Are Advancing Transplantation

More time and more options make more life-saving surgeries possible.

More HealthBeat Articles