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  • Associate Professor, Center for Health Innovations and Outcomes Research (CHIOR), Feinstein Institutes for Medical Research
  • Investigator, North Shore University Hospital
  • Director, Pulmonary Function Laboratory and Rehabilitation, North Shore University Hospital
  • Professor of Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell

About the investigator

Dr. Talwar received his medical training at the All India Institute of Medical Sciences, Delhi, India. He had further post graduate training in the United Kingdom and participated in a research fellowship at Northwell Health before his graduate medical education.

Dr. Talwar completed his residency training at Jamaica and Winthrop University Hospitals. He went on to complete his fellowship in Pulmonary Medicine in 1998 at Winthrop university Hospital. Dr. Talwar joined as an attending physician at North University soon thereafter. At North shore University Hospital, Dr. Talwar began his research interests in the field of pulmonary hypertension and interstitial lung disease.

Dr. Talwar is the author or co-author of over 90 peer-reviewed publications and 10 book chapters. He has presented his important research at numerous nation and international conferences.

Research focus

Dr. Talwar’s career over the years has included basic and clinical science research, front line academic practice, and directorship of an advanced lung disease program. This array of experience prepared him to appreciate and respect many facets of medical, organizational, and public policy issues in health care.

Dr. Talwar is a clinician who likes to take care of patients using his research and clinical knowledge. His specialty is advanced lung disease, patients with interstitial lung disease and pulmonary arterial hypertension who needs specialized care. This specialized, targeted care is provided in the advanced lung disease program that he has been directing for the last 13 years.

Dr. Talwar views himself as a clinical scientist. His work is on translational research in pulmonary medicine with a focus on pulmonary hypertension and advanced lung disease. He is an Associate Investigator with a clinical track for the Center for Heart & Lung Research at the The Feinstein Institutes for Medical Research. Dr. Talwar has been the recipient of ECRIP award thrice. At present, he is also co-investigator on a National Institutes of Health study entitled MIF-Thyroxine Interactions in the Pathogenesis of Pulmonary Arterial Hypertension.

Dr. Talwar’s research also focuses on the various comorbidities that affect patients with pulmonary hypertension and interstitial lung disease. He and his team take a close look at patients’ mental health as well as their health related quality of life.

His role in the division of pulmonary, critical care and sleep medicine is also that of an educator. Dr. Talwar has been involved with teaching residents and fellows since he began his career at Northwell Health. He has also taken an active role in the teaching of the summer research students and numerous volunteers.


Winthrop University Hospital, Mineola, NY
Degree: Fellow
Field of study: Pulmonary, Critical Care and Sleep Medicine

Jamaica Hospital Medical Center/Winthrop University Hospital, NY
Degree: Residency
Field of study: Internal Medicine

All India Institute of Medical Sciences, New Delhi, India
Degree: MD

Lab members

Sameer Verma, MD
Clinical Research Coordinator
Email: [email protected]

Honors & awards

  • 2016 American Thoracic Society [ATS] Abstract Scholarship
  • 2016 ATS Pulmonary Circulation Assembly Program, “Diagnostic performance of PA:A ratio combined with contrast reflux grade on CT for pulmonary hypertension” ( jointly awarded to Atul Palkar, MD)
  • 2014 American College of Chest Physicians Chest Foundation Award, Advanced lung Disease


  1. Talwar A, Sahni S, Talwar A, Verma S, Kohn N. “Socioeconomic Status Affects Pulmonary Hypertension Disease Severity at Time of First Evaluation.” Pulmonary Circulation 2016;6(2):191-195. (PMID: 27252845)
  2. Verma S, Sahni S, Vijayan VK, Talwar A. “Depression in Pulmonary Arterial Hypertension: An Undertreated Comorbidity.” Lung India. 2016;33(1):58-63. (PMID: 26933309)
  3. Sahni S, Ojrzanowski M, Majewski S, Talwar A. “Pulmonary Arterial Hypertension: A Current Review of Pharmacological Management.” Pneumonol Alergol Pol 2016; 84: 47–61. (PMID: 26693827)
  4. Sahni S, Verma S, Thomas RS, Capozzi B, Talwar A. “Clinical Relevance of the Incidentaloma: A Clinician’s Viewpoint.” SM J Clin Med. 2015;1(2):1006
  5. Talwar A, Sahni S, Kim EJ, Verma S, Kohn N. “Dyspnea, Depression, and Health Related Quality of Life in Patients With Pulmonary Arterial Hypertension.” J Exerc Rehabil. 2015;11(5):259-265. (PMID: 26535216)
  1. Agrawal A, Sahni S, Iftikhar A, Talwar A. “Pulmonary Manifestations of Renal Cell Carcinoma.” Respiratory Medicine. 2015;109(12);1505–1508. (PMID: 26525375)
  2. Palkar AV, Agrawal A,Verma S, Iftikhar A, Miller EJ, Talwar A. “Post Splenectomy Related Pulmonary Hypertension.” World Journal of Respirology 2015;5(2): 69-77. (PMID: 26949600)
  3. Cardenas-Garcia J, Talwar A, Mangala N, Malhotra P, Shah R. “Review of radiologic infectious and non-infectious pulmonary complications in Human Immunodeficiency Virus patients.” J Pulmonary respiratory medicine 2015; 5: 260
  4. Verma S, Vijayan VK Talwar A. “Caregivers Burden in Pulmonary Arterial Hypertension and Other Advanced Lung Diseases.” Journal of Exercise and Rehabilitation. Aug 2016. Publication Status: Submitted
  5. Talwar A, Sahni S, Verma S, He T, Kohn N. “Exercise Tolerance Improves After Pulmonary Rehabilitation in Pulmonary Hypertension Patients.” May 2016. JCRP. Publication Status: Under Review
  6. Sahni S, Khanijo S, Talwar A. “Socioeconomic Status in Pulmonary Diseases.” Respiratory Medicine. July 2016. Publication Status: Under Review
  7. Makaryus M, Sahni S, Kumar A, Cohen S, Mehrishi S, Talwar A. “IVC Filter Strut Fracture Migration Causing Right Ventricular Perforation and Subsequent Cardiac Tamponade.” North American Journal of Medical Sciences. May 2016. Publication Status: Under Review
  8. Agrawal A, Gupta A, Sahni S, Shah R, Talwar A. “Pulmonary Manifestations of Urothelial Carcinoma of the Bladder.” North American Journal of Medical Sciences. May 2016. Publication Status: Under Review
  9. Palkar AV, Agrawal A, Talwar A. “Orthodeoxia: A Review.” 2016 May. Publication Status: Under Preparation.
  10. Sahni S, Fein A, Postolov I, Shah RD, Talwar A. “Congenital Absence of the Pericardium: An Overview.” Annals of the American Thoracic Society. 2016 Feb; Publication Status: Under Preparation
  11. Sahni S, Iftikhar A, Kohn N, Verma S, Talwar A, Miller EM. “Change In Endothelin-1 On Cardiopulmonary Exercise Testing In Patients With Advanced Lung Disease.” May 2016. Lung. Publication Status: Under Preparation
  12. Talwar A, Sahni S, Verma S, Singh K, Kohn N. “Self Reported Fatigue Prevalence in Pulmonary Hypertension Patients.” July 2016. Publication Status: Under Preparation
  13. Athanasiou KA, Rana AS, Sahni S, Talwar A. “Systemic Sclerosis Associated Pulmonary Arterial Hypertension.” JAAPA. Aug 2016. Publication Status: Issue Preparation
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