Emeritus Professor of Medicine

Perelman School of Medicine, University of Pennsylvania, PA, USA

Professor of Medicine

Perelman School of Medicine, University of Pennsylvania, PA, USA

Director, Infectious Diseases Clinical Services

Hospital of the University of Pennsylvania

Associate Professor of Medicine

Perelman School of Medicine, University of Pennsylvania, PA, USA

Adjunct Professor of Medicine

Perelman School of Medicine, University of Pennsylvania, PA, USA

Professor of Clinical Medicine

UMDNJ-Robert Wood Johnson Medical School at Camden

Visiting Professor

Indian Health Service Chinle, Arizona

Attending Physician

Philadelphia Veterans Administration Hospital

Consultant in Internal Medicine

Wills Eye Hospital

American Board of International and Travel Medicine

ABIM

1996

American Board of Infectious Disease

ABIM

1976

American Board of Internal Medicine

ABIM

1974

MD

Columbia University College of Physicians and Surgeons

1971

American Association for the Advancement of Science

American College of Physicians

American College of Emergency Physicians

American Society for Microbiology

Infectious Disease Society of America

American Federation for Clinical Research

American Venereal Disease Association

National Foundation for Infectious Diseases

Wilderness Medical Society

American Society for Tropical Medicine and Hygiene

Association of Program Directors in Internal Medicine

International AIDS Society

Society for General Internal Medicine

HIV Medicine Association

Infectious Diseases Society of New Jersey

Pennsylvania Medical Society

Academy of Medicine of New Jersey

https://pubmed.ncbi.nlm.nih.gov/8521369/

https://pubmed.ncbi.nlm.nih.gov/12637136/

https://pubmed.ncbi.nlm.nih.gov/15259524/

https://pubmed.ncbi.nlm.nih.gov/14567489/

https://pubmed.ncbi.nlm.nih.gov/12924833/

https://pubmed.ncbi.nlm.nih.gov/18628219/

https://pubmed.ncbi.nlm.nih.gov/24075223/