• 1627 Citations
1999 …2025
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Personal profile

Research Interests

Ravi Kalhan, MD, MS is Director of the Northwestern Asthma and Chronic Obstructive Pulmonary Disease (COPD) Program where comprehensive care is provided to patients with asthma and COPD at all stages of severity. Dr. Kalhan additionally serves as medical director of the lung volume reduction program leading the multidisciplinary evaluation of patients for both bronchoscopic and surgical approaches to severe COPD. Dr. Kalhan attended college at Brown University in Providence, RI where he majored in modern American history. He subsequently entered medical school at Case Western Reserve University School of Medicine and completed his internal medicine residency at the Hospital of the University of Pennsylvania. He then came to Chicago where he pursued his fellowship training in Pulmonary and Critical Care Medicine at Northwestern Memorial Hospital, and has been on the Northwestern faculty since 2006. Dr. Kalhan's clinical interests are in the care of patients with both asthma and COPD. His research interests relate to respiratory epidemiology, in particular identification of early risk factors that impact the vulnerability of some individuals to develop chronic respiratory disease. He is also involved in clinical trials of new therapies for both asthma and COPD.

Respiratory epidemiology; Clinical trials in COPD and asthma

COPD; Emphysema; Asthma

Certifications and Licenses

Internal Medicine
Critical Care Medicine
Pulmonary Disease

Training Experience

2003Residency, Hospital of the University of Pennsylvania
2006Fellowship, Northwestern University, McGaw Medical Center (Northwestern Memorial Hospital)

Education/Academic qualification

MD, Case Western Reserve University

… → 2000

Research interests

  • Asthma
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Epidemiology
  • Respiratory Diseases

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  • 4 Similar Profiles
Chronic Obstructive Pulmonary Disease Medicine & Life Sciences
Lung Medicine & Life Sciences
Emphysema Medicine & Life Sciences
Young Adult Medicine & Life Sciences
Spirometry Medicine & Life Sciences
Smoking Medicine & Life Sciences
Asthma Medicine & Life Sciences
Vital Capacity Medicine & Life Sciences

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Grants 1999 2025

Research Output 2001 2019

4 Citations (Scopus)

Albuminuria, lung function decline, and risk of incident chronic obstructive pulmonary disease the NHLBI pooled cohorts study

Oelsner, E. C., Balte, P. P., Grams, M. E., Cassano, P. A., Jacobs, D. R., Graham Barr, R., Burkart, K. M., Kalhan, R., Kronmal, R., Loehr, L. R., O’Connor, G. T., Schwartz, J. E., Shlipak, M., Tracy, R. P., Tsai, M. Y., White, W. & Yende, S., Feb 1 2019, In : American journal of respiratory and critical care medicine. 199, 3, p. 321-332 12 p.

Research output: Contribution to journalArticle

National Heart, Lung, and Blood Institute (U.S.)
Chronic Obstructive Pulmonary Disease
Cohort Studies
4 Citations (Scopus)

A randomized controlled trial of 24 weeks of varenicline for tobacco use among cancer patients: Efficacy, safety, and adherence

Schnoll, R., Leone, F., Veluz-Wilkins, A., Miele, A., Hole, A., Jao, N. C., Paul Wileyto, E., Carroll, A. J., Kalhan, R., Patel, J., Langer, C., Lubitz, S. F. & Hitsman, B., Mar 2019, In : Psycho-oncology. 28, 3, p. 561-569 9 p.

Research output: Contribution to journalArticle

Tobacco Use
Patient Safety
Patient Compliance
Randomized Controlled Trials
8 Citations (Scopus)
Chronic Obstructive Pulmonary Disease
Observational Studies
Blood Vessels
Longitudinal Studies

Assessment of Self-Management Treatment Needs Among COPD Helpline Callers

Mathew, A. R., Guzman, M., Bridges, C., Yount, S., Kalhan, R. & Hitsman, B. L., Feb 1 2019, In : COPD. 16, 1, p. 82-88 7 p.

Research output: Contribution to journalArticle

Self Care
Chronic Obstructive Pulmonary Disease
Smoking Cessation
8 Citations (Scopus)

Discriminative Accuracy of FEV1:FVC Thresholds for COPD-Related Hospitalization and Mortality

Bhatt, S. P., Balte, P. P., Schwartz, J. E., Cassano, P. A., Couper, D., Jacobs, D. R., Kalhan, R., O'Connor, G. T., Yende, S., Sanders, J. L., Umans, J. G., Dransfield, M. T., Chaves, P. H., White, W. B. & Oelsner, E. C., Jun 25 2019, In : JAMA - Journal of the American Medical Association. 321, 24, p. 2438-2447 10 p.

Research output: Contribution to journalArticle

Chronic Obstructive Pulmonary Disease
National Heart, Lung, and Blood Institute (U.S.)