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Our Lady of Mercy

Parish Information

  • 9200 Kentsdale Drive Potomac, MD, 20854

Parish Staff

  • Pastor: Father Mark D. Knestout
  • Parochial Vicars: Father Kyle M. Vance, Father Stephen C. Wong
  • Business Manager: Mary Conlon
  • Administrative Assistant: Kelly Athey, Mary Kate Kassman
  • Facilities Manager: German Lopez
  • Adjutant Judicial Vicar of the Metropolitan Tribunal: Msgr. Charles V. Antonicelli

Pastor: Father Mark D. Knestout

Canonically Established: 1959

Wheelchair Accessible

Service Information

Mass Times:

  • Sunday at 7:00 AM
  • Sunday at 9:00 AM
  • Sunday at 11:00 AM
  • 1st Sunday of the month at 1:00 PM (Korean)
  • Sunday at 5:00 PM
  • Monday at 7:00 AM
  • Monday at 8:30 AM
  • Tuesday at 7:00 AM
  • Tuesday at 8:30 AM
  • Wednesday at 7:00 AM
  • Wednesday at 8:30 AM
  • Thursday at 7:00 AM
  • Thursday at 8:30 AM
  • Friday at 7:00 AM
  • Friday at 8:30 AM
  • Saturday at 9:00 AM
  • Saturday at 5:00 PM
  • Holidays at 8:30 AM
  • Holy Days at As announced

Confession Times:

  • Sunday, 4:00 PM to 4:50 PM
  • Tuesday, 7:30 AM to until confessions have ended.
  • Tuesday, 1:45 PM to 2:45 PM
  • Friday, 7:30 AM to until confessions have ended.
  • Saturday, 4:00 PM to 4:50 PM

Eucharistic Adoration

Eucharistic Adoration Chapel available at all times