Benjamin T. Galen, MD, FACP

Dr. Galen is currently the Director of Ultrasound and Procedure training as well as Associate Program Director in The Einstein/Montefiore Internal Medicine Residency Program.

He graduated from Brown University with honors in the biological sciences and earned an M.D. from Tufts University School of Medicine. He trained in internal medicine at Yale University where he was elected to the Gold Humanism Honor Society and was the class speaker at residency graduation. He joined Montefiore and Einstein in the Bronx, NY in 2013 as an inpatient teaching attending.

In 2015 Dr. Galen received the Sharon R. Silbiger Faculty Teaching Award from the Einstein residents. He has led hundreds of resident teaching conferences and has worked to formalize curricula for point-of-care ultrasound (POCUS) and bedside procedures, such as lumbar puncture (LP). Dr. Galen has published his research related to quality improvement in ultrasound-guided vascular access and is also passionate about medical case reports. He has published nearly 50 articles in peer reviewed journals as well as an intern survival guide.

Twitter | ORCID

Casey Glass, MD FACEP

Dr. Casey Glass, MD is an Associate Professor of Emergency Medicine at Wake Forest School of Medicine.

He is the director of the Ultrasound Integrated Curriculum for the Wake Forest School of Medicine and Director of Ultrasound Education for Wake Forest’s Center for Experiential and Applied Learning. His primary interests are in ultrasound education and applications of point of care ultrasound in the acute care environment.

Twitter | Linkedin | ORCID | Email

Marta Berrio, MD

Dr. Marta Berrio is a cardiac and transplant-trained anesthesiologist. She is a faculty member of the Department of Anesthesiology and Perioperative Medicine at the University of Ottawa and the Vascular and POCUS teams. She is a Fellow of the American Society of Echocardiography (FASE). She is certified in Point-of-Care Ultrasound by the American College of Chest Physicians and is a recognized American Society of Anesthesiologists POCUS Local Mentor. She has been privileged to work as an anesthesiologist, teaching and leading POCUS/TEE/TTE workshops in different countries (Canada, Colombia, and Spain). Her interests are education and research on POCUS and TEE. Her fellowship in knowledge translation equips her with tools for patient-oriented and perioperative outcomes research.

LinkedIn | ORCID iD | Email

Wilfredo Puentes, MD

Dr. Wilfredo Puentes is Anesthesia staff at the London Health Sciences & St. Joseph’s Health Care, and as of July 1st 2025, holds the position of Associate Professor in the Department of Anesthesia and Perioperative Medicine at Western University, London, Ontario.

He attended medical school at the National University of Colombia – Bogota and completed his residency in anesthesiology at El Bosque University – Bogota. He completed fellowships in Canada at the Toronto General Hospital – University of Toronto (Thoracic Anesthesia, Cardiac Anesthesia and Intensive Care, and Advanced Clinical Practice). He obtained the Certification of Completion in Critical Care Ultrasonography from the American College of Chest Physicians – ACCP and Advanced Perioperative Echocardiography from the National Board of Echocardiography -NBA, USA. Currently, he is a candidate for the Master of Education in the Health Professions at the John Hopkins University School of Education.

LinkedIn | ORCID | Email

Rob Tanzola, MD

Dr. Rob Tanzola is an Associate Professor of Anesthesiology at Queen’s University.

He is a cardiac anesthesiologist who is formally trained in transesophageal echocardiography. His interests includes the use and teaching of POCUS in the perioperative setting.

Nidhish Tiwari, MD

Dr. Nidhish Tiwari is currently working as Assistant Professor at Albert Einstein College of Medicine and is also an Associate Director of Cardiovascular Service at North Central Bronx Hospital at Bronx, New York, USA.

He completed his medicine residency and chief residency at Jacobi Medical Center followed by the fellowship in cardiology from Montefiore Medical Center, both under Albert Einstein College of Medicine at Bronx, New York, USA. He has been trained as level III Echocardiographer which implies mastery of novel and innovative cardiac imaging techniques. He has been given many awards for teaching medical students and residents. In a short period, he has been endowed with fellowships in prestigious organizations such as FACC (American College of Cardiology), FASE (American Society of Echocardiography) and FACP (American College of Physicians). He is very active in ASE in various committees, invited faculty and reviewer for international conferences, and involved in planning committee of the annual scientific meeting of New York chapter of American College of Physician (ACP).

Ritu Thamman, MD

Dr. Thamman is an Assistant Clinical Professor of Medicine at the University of Pittsburgh School of Medicine. She is a Fellow of the American College of Cardiology (FACC) and of the American Society of Echocardiography (FASE) . She is on the Board of Directors of the American Society of Echocardiography.

Her research focuses on cardiovascular disease in women, mitral valve prolapse, mitral annular disjunction and innovative implementation tools for cardiovascular disease. She is the chair of the Echocardiography Twitter Journal club, a formal journal club on Twitter for which she has developed CME, writing all the questions for the American Society of Echocardiography. She is also a Board Member of the ASE. She is the ASE’s Social Media Strategist.

Dr. Thamman is participating in multiple national and international society guidelines and position statements. She is a member of the writing committee for the 2021 American College of Cardiology (ACC) Disparities of Care Guidelines and is currently a committee member for the upcoming 2020 ASE Burnout Prevention Guidelines. She is member of the ACC Women in Cardiology Leadership Council and started the PA chapter of Women in Cardiology.

Dr. Thamman is the Social Media Editor for Circulation Cardiovascular Quality and Outcomes and the Journal of American Society of Echocardiography. Her writing and interpretation of scientific articles has led to her being a top influencer for the ACC,AHA,ASE and European Congress of Cardiology. She is a national and international figure for social media for advocacy and education for cardiologists.

Wilma Chan, MD/EdM, FACEP

Dr. Chan joined the Department of Emergency Medicine at Penn in July 2015 and is the inaugural Director of Ultrasound Education at the University of Pennsylvania School of Medicine. Dr. Chan’s clinical expertise includes point-of-care ultrasound, emergency medicine, critical care medicine, and trauma care.

She is originally from Cranston, Rhode Island and completed her EM residency at the University of Chicago and her ultrasound fellowship at Brigham and Women’s Hospital in Boston. She has a master’s in Education from the Harvard Graduate School of Education in the program of Technology, Innovation and Education. She obtained her medical and undergraduate degrees at Tufts University. 

Robert I. Allen

Dr. Robert I. Allen is an emergency physician at Los Angeles General Medical Center, where he directs the Emergency Observation Unit and Point-of-Care Ultrasound (POCUS) research. He also serves on faculty in the Division of Emergency Ultrasound and as Ultrasound Section Editor for WestJEM. A leader in procedural innovation, he developed and leads the ED nerve block program and has championed system-wide improvements for Deaf and Hard of Hearing (DHH) patient care.

An active educator and researcher, Dr. Allen has published extensively in emergency medicine, authored textbook chapters, and taught ultrasound and procedural skills at institutions nationwide. His work reflects a strong commitment to advancing clinical care, health equity, and medical education.

ORCID | Email

Michelle Fleshner, MD

Michelle Fleshner is an Academic Hospitalist and Assistant Professor at the University of Colorado Anschutz Medical Center. She completed her Internal Medicine Residency training and a Chief Resident year at the University of Pittsburgh Medical Center (UPMC), where she created and directed a residency-wide POCUS curriculum. She was part of the global health track at UPMC, where she spent a total of 5 months working in Malawi, using and teaching POCUS on a daily basis, coming up with innovative ways to create POCUS portfolios and obtain quality assurance from abroad. She joined the faculty at University of Colorado in August 2020 and is the Co-Director of the Internal Medicine Residency POCUS curriculum, Co-Director of the Residency POCUS elective, and Director of POCUS Faculty Development. She is particularly interested in the intersection of diagnostic POCUS and clinical reasoning at the bedside, procedural use of POCUS, and application of POCUS in global health settings.

LinkedIn | Email

Gordon Johnson, MD

Dr. Johnson is the medical director of point of care ultrasound for Legacy Health.

He graduated from the University of Washington School of Medicine in 1994 and completed a residency in Internal Medical in 1997. He spent 8 months of medical school in India and Thailand and has been interested in global health since that time. He practiced traditional internal medicine from 1997 to 2007 with a large part of his practice doing inpatient as well as HIV medicine. He also spent time moonlighting in Emergency Rooms and Urgent Care. From 2005 to 2007 he practiced part time at Oregon Health and Science University as an HIV consultant. In 2007 he switched to full time hospital medicine and, as his children were growing older, he started to spend more time working overseas again. Most of his experience at that time was in India, but later in Haiti, Uganda and most recently in South Sudan. His interest in point of care ultrasound began during his residency but there were no mentors and he was not aware of any formal training for internists at that time, so struggled using it, trying to teach himself. Finally in 2016 he decided to embark on a year long fellowship with the Ultrasound Leadership Academy. This program focuses on people that not only want to learn point of care ultrasound, but also ones interested in being instructors and leaders in the field. POCUS help his practice tremendous, especially in many of the resource limited settings he was practicing in.

LinkedIn | ORCID | Email

Andre Kumar, MD, MEd

Dr. Andre Kumar is an academic hospitalist at Stanford University School of Medicine. He is the director for the medicine procedure service and co-director of POCUS governance for the Stanford Department of Medicine. 

His research focuses on the clinical and educational applications of POCUS, including the use of deep learning and artificial intelligence to augment existing clinical integrations. Dr. Kumar is also an NIH-funded investigator with extensive experience in clinical trials (long-COVID), research operations, and multi-center studies.

LinkedIn | ORCID | Email

Manpreet Malik, MBBS, SFHM

Dr. Manpreet Malik is an academic hospitalist at Emory University in Atlanta. He is an Associate Professor of Medicine at Emory and clinically works at Grady Memorial Hospital.  He is the program director for the Transitional Year program at Emory and core faculty for the J. Willis Hurst Emory Internal Medicine Residency Program. 

He has created and led multiple bedside ultrasound guided procedure services including the one at Grady. He provides faculty mentorship to residents on the POCUS Distinction pathway at Emory. He teaches and directs bedside ultrasound and procedure workshops for various professional societies.

Tanping Wong, MD

Dr. Tanping Wong is the Medical Director of the hospital medicine POCUS fellowship at Weill Cornell, and course director for the SHM 5-Day POCUS Course at Weill Cornell.

She organizes POCUS education for medicine residents and medicine faculty.

ORCID | Email

Abhilash Koratala, MD

Abhilash Koratala is an academic nephrologist and currently the Director of Clinical Imaging for Nephrology at the Medical College of Wisconsin.

He started his academic career at University of Florida, where he developed a nephrology-oriented POCUS program for internal medicine residents and nephrology fellows. Dr. Koratala has also designed a comprehensive POCUS video curriculum encompassing all the diagnostic applications, currently considered to be within the scope of nephrology practice. In addition, he promotes POCUS on various online platforms and authors a series of posts for a feature called Focus on POCUN on the Renal Fellow Network, a nephrology blog that partners with the American Society of Nephrology (ASN). His online POCUS teaching tool NephroPOCUS.com has won the ASN innovations in kidney education award in 2020. Apart from POCUS, he enjoys all aspects of nephrology and has authored over 150 scientific publications in peer-reviewed journals to date.

LinkedIn | ORCID | Email

Nathaniel Reisinger, MD

Dr. Reisinger is Assistant Professor of Clinical Medicine at the University of Pennsylvania where he serves as the co-director of the internal medicine ultrasound fellowship and director of point-of-care ultrasound for the internal medicine residency and nephrology fellowship as well as medical director of DaVita Cedar Grove Hemodialysis Unit.

He completed med school at UT Southwestern, IM residency at Columbia, and nephrology fellowship at Penn. Nathaniel is a researcher and educator for POCUS in nephrology.

Twitter

Jon Rosenberg, MD

Dr. Rosenberg is a Neurology trained Neurointensivist in New York. He completed his medical school at Albert Einstein College of Medicine followed by Neurology Residency at the University of Pennsylvania. Following residency he returned to New York City to complete his Neurocritical Care Fellowship at New York Presbyterian Hospital System-Columbia University/Weill Cornell Medical Center.  Dr. Rosenberg’s primary interests include medical education, point of care ultrasound, and caring for critically ill patients.  He is an assistant Professor at Westchester Medical Center, where he serves as the Associate Program Director for the Neurocritical Care Fellowship. Dr. Rosenberg has authored multiple peer-reviewed articles and book chapters on Neurocritical Care, and he has received multiple teaching awards.

Beryl Greywoode, MD

Dr. Beryl Greywoode is an Attending Physician at Children’s Hospital of Philadelphia and an Assistant Professor at the University of Pennsylvania.

Born in West Africa, she received her medical degree with Honors from the University of Florida College of Medicine where she founded the non-profit Project RAIN (Relieving Areas In Need) which focuses on advancing sustainable health initiatives in Sierra Leone her home country. She then completed her pediatric training in the Boston Combined Residency Program (Boston Children’s/Boston Medical Center) and thereafter pursued a Pediatric Infectious Disease Fellowship at Imperial Health in the United Kingdom developing her clinical skills in both tropical health and international relief work. Though her global health work encompasses a broad range of issues, Dr. Greywoode has a keen interest in developing innovative solutions for low resource settings that impact and augment health outcomes.

Dr. Greywoode is currently the Director for General Pediatrics Point of Care Ultrasound at the Children’s Hospital of Philadelphia, a program she developed from its inception. Through her ultrasound work she has pioneered one of the first general pediatric inpatient ultrasound programs in the nation training front line hospitalist, residents, and medical students in the use of bedside ultrasound. She leads on a national level influencing the use of ultrasound in the pediatric inpatient setting, serves on the leadership team for FUSEd (Focused Ultrasound in Educaton) an interdepartmental initiative for bedside education and research, and is a Course Director for CHOP’s Bedside Ultrasound Course, an internationally renowned training course in bedside ultrasound. 

LinkedIn | Email

Andrea Matho, MD

Dr. Andrea Matho is a hospitalist at Children’s Hospital Los Angeles and LA General Medical Center. She holds a joint position as Assistant Professor of Pediatrics and Internal Medicine at the University of Southern California Keck School of Medicine.  

Originally from Grenoble France, she received her BA in Molecular & Cell Biology and English Literature from Cornell University and medical degree from the State University at Buffalo School of Medicine. She completed residency and chief residency in Internal Medicine/Pediatrics at Albany Medical Center, and fellowship in clinical ultrasound at the University of Pennsylvania. 

Her current academic efforts are aimed at developing guidelines for POCUS in pediatric hospital medicine (PHM), establishing a “train the trainer” POCUS faculty curriculum, and innovations in phantom models and ultrasound simulation. 

Additionally, she is a member of the medical & health committee for Engeye, a nonprofit organization that provides health care, education, and community development initiatives in rural Uganda. 

Twitter | LinkedIn

Cameron Baston, MD MSCE

Dr. Cameron Baston is an Assistant Professor of Clinical Medicine (Pulmonary, Allergy and Critical Care) at the University of Pennsylvania. He serves as the Department of Medicine Director of Clinician Performed Ultrasound, Assistant Program Director of the Pulmonary and Critical Care Medicine Fellowship, and Faculty Associate Director of Penn Health Tech.

He developed an interest in POCUS after global health experiences in Rwanda demonstrated the value of the technology. He has trained with CEURF, and was the inaugural IM fellow at the EM/IM POCUS fellowship with a Masters in Clinical Epidemiology at the University of Pennsylvania. He is most fascinated by the developing applications for pulmonary ultrasound, and currently works as a pulmonary and critical care attending.

LinkedIn | ORCID | Email

Segun Olusanya, Bsc BM MRCP (UK) FRCA FFICM

Segun is quite possibly the UK’s longest serving Intensive Care trainee, and currently works at University College Hospital, London.

A University of Southampton graduate, he has spent his many years as a registrar in the Thames Valley and London regions. His clinical interests are social media, medical education, point of care ultrasound, and wellbeing in medicine. He’s been privileged to explore these interests by being part of the UK Focused Ultrasound in Intensive Care Committee, an associate editor of the Journal of the Intensive Care Society, an Intensive Care Society Digital Committee member, a founding member of the Tea and Empathy Facebook group, and a co-opted member of the Editorial and Publishing committee for the European Society of Intensive Care Medicine. 

His single great achievement is being able to run a wedding cake business with his wife, Fehintola. You can find their creations at monanniecakes.com.

Marjan Islam, MD

Dr. Marjan Islam is an Assistant Professor of Medicine at the Albert Einstein College of Medicine and an attending physician in the Division of Critical Care Medicine at Montefiore Medical Center in the Bronx, New York. He completed his fellowship in Pulmonary and Critical Care Medicine at Montefiore, where he also served as Chief Fellow.

A dedicated educator and clinician, Dr. Islam has focused much of his academic work on point-of-care ultrasound (POCUS), with particular interest in thoracic ultrasound in respiratory failure. He is the author of multiple peer-reviewed publications on POCUS, including original research on the evaluation of dyspnea in ARDS survivors and contributions to the CHEST Ultrasound Corner. His 2023 study, “Thoracic Ultrasound in COVID-19: Use of Lung and Diaphragm Ultrasound in Evaluating Dyspnea in Survivors of ARDS,” was recognized with a Young Investigator Research Award at the CHEST Annual Meeting and supported by a CHEST Foundation research grant.

Dr. Islam serves annually as invited teaching faculty for the Greater New York Critical Care Ultrasonography Conference, a regional course for first-year pulmonary and critical care fellows. He has also contributed to national ultrasound education as co-author of “Lung Ultrasound: The Basics,” in the forthcoming Critical Care Ultrasound – 2nd Edition textbook.

He is the Medical Director of the Montefiore Post-ICU Clinic and has previously led both the Montefiore COPD Center and the COVID-19 Recovery Clinic. He served as a site investigator in several NIH-sponsored studies through the PETAL Network and remains an active contributor to national post-ICU recovery initiatives.

Dr. Islam is board-certified in Internal Medicine, Pulmonary Disease, and Critical Care Medicine. He has served as a peer reviewer for journals including the Journal of Intensive Care Medicine, American Journal of Critical Care, and Journal of Clinical Medicine.

Amer M. Johri, MD MSc FRCPC FASE

Dr. Amer Johri is a Professor at Queen’s University in the Department of Medicine, and a member of the echocardiography group at Queen’s University. He is the Founder and Director of the Cardiovascular Imaging Network at Queen’s (CINQ; cinqlab.com), CINQUILL Medical Publishers Inc., and the @POCUSJournal. He was co-chair of Canada’s first recommendations on the Cardiovascular Screening of Competitive Athletes, a Joint Position Statement by the Canadian Heart Rhythm Society and Canadian Cardiovascular Society, and he currently leads an international writing group for the ASE Guideline for the assessment of carotid arterial plaque by ultrasound.

Dr. Johri’s CINQ Lab serves as an innovative hub for residents, medical students, undergraduate and graduate students in the sciences and engineering. His research focus is patient-oriented research projects and the innovation of non-invasive techniques to predict and diagnose atherosclerotic cardiovascular disease. This includes: point of care vascular ultrasound for risk stratification, cardiovascular screening of competitive athletes, analysis of vulnerable atherosclerotic plaque through 3D, composition, or machine learning methods, and development of novel ultrasound contrast applications in the field of theranostics.

Twitter