Director, Heredity Clinic      

     Freedman's Hospital

     Howard University

     College of Medicine

     Washington, D.C.

     March 1966 - June 1968

Assistant Chief     

     Department of Medicine

Internal Medicine      

     U.S. Public Health Service Hospital

Senior Physician-in-Charge      

     Baltimore, Maryland

of Primary Care Clinic      

     July 1970 - December 1970

Consultant in Medical Genetics      

     New York State 

     Psychiatric Institute,

     Columbia-Presbyterian Medical Center,

     Department of Medical Genetics

     New York, N.Y

     July 1973 - 1975

Assistant Attending Pediatrician      

     Babies Hospital

     Columbia-Presbyterian Medical Center

     New York, N.Y.

     July 1975 - June 1979

Associate Attending in      

     Roosevelt Hospital

Medical Genetics      

     Department of Pediatrics

     New York, N.Y.

     July 1976 - 1978

Co-Director      

     Birth Defects and Genetic Disease Center

     Saint Mary's Hospital for Children

     Bayside, New York

     July 1976 - August 1977

Consultant in Genetics      

     Birth Defects and Genetic Disease Center 

     Saint Mary's Hospital for Children

     Bayside, New York

     September 1977 - June 1978

Assistant Attending Pediatrician      

     Babies Hospital

     Columbia-Presbyterian Medical Center

     New York, N.Y.

     April 1986 - June 1990

Attending Physician     

     Doctors Hospital

     Department of Medicine

     New York, N.Y.

     March 1987 -  March 1990

Assistant Attending Pediatrician     

     Babies Hospital

     Columbia-Presbyterian Medical Center

     New York, N.Y.

     November 1, 1991 - June 30, 1996