Pulmonary + Critical Care Fellowship Program

Meet our current fellows

At Tufts Medical Center, our current residents and alumni form the backbone of our pulmonary and critical care family. Our fellows bring fresh perspectives and enthusiasm as they train with us, while our alumni represent the program’s lasting legacy—leading, innovating, and shaping the future of lung health and critical care.

This page celebrates both the present and the past—highlighting the journeys of current trainees and showcasing the diverse paths our graduates take. We’re committed to fostering strong connections that support professional growth and lifelong collaboration.

Current fellows

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Elizabeth Han, MD

PGY-6

Training + education

Undergraduate School

Barnard College

Medical School

Tufts University School of Medicine

Residency

Tufts Medical Center Internal Medicine

About me

Clinical Interests

Asthma and Sleep Medicine

Hobbies

Hiking, boxing, cooking, traveling, basketball, biking, and cheering on the Celtics

Timothy Laux, MD

PGY-6

Training + education

Graduate School

MPH – University of California Berkeley

Medical School

University of Pittsburgh School of Medicine

Fellowship

The HEAL Initiative (Global Health Equity Fellowship), University of California San Francisco

About me

Biography

Tim Laux, MD MPH, completed medical school at the University of Pittsburgh and subsequently Internal Medicine residency at Washington University in St. Louis/Barnes Jewish Hospital. Thereafter, he completed a global health equity fellowship (the HEAL Initiative) at the University of California San Francisco, splitting time between rural India and the Navajo (Diné Nation) while completing his MPH. He enjoyed this work so much he continued splitting time between these two nations until the COVID-19 pandemic made this no longer practically possible. His pandemic experiences convinced him to pursue pulmonary critical care training despite being a little older than average. He continues to be a small part of a research collaborative focused on preventing TB deaths in critically ill TB patients in south India. In the future, he hopes to return to similar lower resource settings with his new clinical skills. In his free time, he enjoys spending time with his wife and their young son.

Career Interests

Perhaps return to the Indian Health Service (IHS) in the southwestern USA or return to working overseas (India) as I have done previously.

Hometown

Yorktown Heights, NY

Clinical Interests

Provision of high-quality critical care in low/lower resource settings. Tuberculosis.

Hobbies

Outdoorsy activities

Leandro Ramirez, MD, MHA

PGY-6

Training + education

Undergraduate School

Stony Brook University

Graduate School

Walden University – Master’s in Healthcare Administration

Medical School

Universidad Iberoamericana (UNIBE) School of Medicine, Santo Domingo, DR

Residency

Roger Williams Medical Center/Boston University - Internal Medicine

Fellowship

Roger Williams Medical Center/Boston University - Internal Medicine

About me

Biography

Dr. Leandro Ramirez is a first-generation American born to Dominican parents. He completed medical school in the Caribbean before returning to New York City, where he worked on NIH-funded research and earned a Master’s in Healthcare Administration. He went on to complete his internal medicine residency in Providence, RI, where his experience as an intern during the peak of the COVID-19 pandemic solidified his interest in pulmonary and critical care medicine. He co-founded a non-profit volunteer group aimed at public health awareness and community outreach. Dr. Ramirez is currently in his final year of fellowship at Tufts Medical Center in Boston. He will be joining the faculty at Roger Williams Medical Center in Rhode Island, balancing his professional pursuits with life as a new father with a growing family.

Career Interests

Dr. Ramirez is preparing to join the faculty at an academic community hospital as a pulmonary and critical care attending. He is passionate about mentoring the next generation of physicians and fostering a collaborative learning environment for fellows, residents, and students.

Hometown

Bronx, NY

Clinical Interests

Dr. Ramirez's clinical interests include a broad range of pulmonary and critical care conditions, with particular attention to procedural medicine, diagnostic evaluation, institutional policy, and longitudinal patient care.

Hobbies

In his free time, Leo enjoys playing basketball, tennis, and golf, experimenting in the kitchen, and spending quality time with family as a proud dad.

Edward Shi, MD

PGY-6