1955: Ordained

1955-1957: St. Canicus, Mahanoy City, PA

1957-1958: Holy Guardian Angel, Hyde Park, PA

1958-1960: Our Lady of the Assumption, Strafford, PA

1960-1962: Ford and Rambo, Bridgeport sts, PA

1963-1966: St. Augustine, Bridgeport, PA

1963-1966: Padua Retreat House, Bridgeport, PA

1966: St. John the Baptist, Philadelphia, PA

1966-1970: Leave of absence

1966-1967: Eugenia Hospital, Whitemarsh, PA

1967-1970: Saint John Vianney Center, Downingtown, PA

1968: Nativity, Warminster, PA

1969: St. Patrick, Kennett Square, PA

1970-1971: Corpus Christi, Philadelphia, PA

1971-1972: Leave of absence

1971-1972: House of Saint Joseph, San Francisco, CA

1972-1976: The Henry Ohlhoff House, San Francisco, CA

1972: Left active ministry

1977-1995: Unknown

1996: Died

Notes: In a secret 1994 memorandum from Msgr. William Lynn to Msgr. James Molloy regarding priests accused of sexual misconduct, Fr. Joseph W. Thomas was included in a list of priests with allegations of sexual misconduct with minors with no conclusive evidence. After the Archdiocese of Philadelphia revoked his priestly faculties in 1972, Fr. Thomas reportedly left the priesthood. His whereabouts from approximately 1977 until his believed death in 1996 are unknown.