Stefan Gierasch Stefan Gierasch was a prolific character actor who made an appearance on in , playing Doctor Hal Moseley in the fifth season episode . He filmed his scenes for this episode on Monday on Paramount Stage 16 . Gierasch has performed on television and in film since the early 1950s , accumulating over a hundred credits . He is also a veteran of the Broadway and off - Broadway stage , performing in numerous productions between 1943 and 1987 . Personal . Gierasch was born in New York City . He has never attended college , having broken into acting at the age of seventeen . Outside of acting , he has served in the American Field service ' s ambulance corps in Italy and in India . Gierasch passed away on 6 September 2014 at the age of 88 . Career . Theater work . Gierasch made his Broadway debut in 1943 , taking over the role of Dexter Franklin in the comedy " Kiss and Tell " . This was followed later that same year with an appearance in " Get Away , Old Man " . In 1949 , he appeared in the short - lived Broadway production " Montserrat " , acting with fellow " Star Trek " alumni John Abbott and Nehemiah Persoff . In 1951 , Gierasch performed with fellow TNG guest star Paul Lambert in the short - lived Broadway production " Night Music " . This was followed in 1953 by the off - Broadway production of " Maya " with Leo Penn , who directed Gierasch on the television shows " Bonanza " and " Switch " in the 1970s ( see below ) . Later in 1953 , Gierasch acted with Phillip Pine in " The Little Clay Cart " , which ran for seven performances off - Broadway . Gierasch returned to Broadway in 1956 , taking over the role of Smith the police constable in the successful revival of " The Threepenny Opera " . That same year , he acted with Michael Strong in a revival of " A Month in the Country " , also on Broadway . This was followed by 1957 ' s " Compulsion " , in which Gierasch played Max Steiner , the older brother of Dean Stockwell ' s character . From November 1958 through January 1959 , Gierasch worked with William Smithers in the Broadway revival of " The Shadow of a Gunman " . In late 1959 , Gierasch landed the role of Herr Zeller in the original production of the hit Rodgers and Hammerstein musical " The Sound of Music " . This production ' s lead male protagonist , Captain George von Trapp , was played by Theodore Bikel . Neither Gierasch nor Bikel returned to their roles for the successful 1965 film version of the musical , which was directed by Robert Wise and starred Christopher Plummer as Captain von Trapp . After appearing in the Broadway play " The Deputy " with Ian Wolfe in 1964 , Gierasch left New York City and joined the Milwaukee Repertory Theatre Company in Wisconsin . He remained there for the company ' s 1965 - 1966 season , performing in such plays as " The Tempest " ( with Robin Gammell ) , " Saint Joan " , " The Glass Menagerie " , " The Time of Your Life " , and " Henry IV , Part I " . He returned to New York in 1967 to perform in " War and Peace " , which also featured Keene Curtis . Over the years , Gierasch has performed at such venues as the American Shakespeare Festival Theatre in Stratford , Connecticut and the Los Angeles Actors Theatre in California . He also continued to act on Broadway , off - Broadway , and in other areas around New York . In 1973 and 1974 , he appeared with Stephen McHattie in a revival of Eugene O ' Neill ' s " The Iceman Cometh " at Broadway ' s Circle in the Square Theatre . He then acted with Kevin Conway in a production of " Of Mice and Men " and with Victor Garber and Ray Wise in a production of " Tartuffe " . His most recent Broadway credit was a revival of George Bernard Shaw ' s " You Never Can Tell " , in which he again worked with Victor Garber and Stephen McHattie . Television . Notable guest appearances . One of Gierasch ' s earliest TV appearances was a 1957 episode of " Studio One " entitled " Walk Down the Hill " , in which he co - starred with TOS guest actor William Smithers . Two decades later , Gierasch and Smithers acted together in an episode of the series " Lucan " . In the early 1960s , Gierasch appeared in two episodes of " The Untouchables " , which , like , was produced by Desilu . Gierasch ' s first episode also guest - starred Frank Gorshin , Davis Roberts , and Jason Wingreen , while his second episode featured Stanley Adams . Throughout the remainder of the 1960s , Gierasch appeared on such TV shows as " Dr Kildare " ( with Elinor Donahue and John Fiedler ) and " Gunsmoke " ( with France Nuyen and Charles Seel ) . In 1971 , he appeared on the short - lived NBC series " Nichols " , along with Ricardo Montalban . He then appeared on the NBC drama " Ironside " with Michael Bell and guest - starred on " The Mod Squad " , on which Tige Andrews and Clarence Williams III were regular cast members . In 1974 , Gierasch acted alongside Michael Pataki in a two - part episode of " Kung Fu " . In 1976 , he guest - starred on " Starsky and Hutch " , which starred David Soul . The following year , Gierasch and Earl Boen were directed by Marc Daniels in an episode of " Hawaii Five - O " . In 1979 , Gierasch appeared on " Dallas " with Mary Crosby and " Fantasy Island " with Ike Eisenmann , John Larroquette , and series regular Ricardo Montalban . Between 1976 and 1981 , Gierasch guest - starred in four episodes of the comic series " Barney Miller " , working with Ron Glass and James Gregory . Between 1976 and 1984 , he was directed by director Reza Badiyi on three shows : " Serpico " , " The Incredible Hulk " ( with Sharon Acker ) , and " Falcon Crest " ( with Robert Foxworth ) . Among the other shows on which Gierash appeared during the 1980s were " M * A * S * H " ( starring David Ogden Stiers ) , " The Greatest American Hero " ( with William Lucking ) , " Quincy M . E . " ( with Michael Durrell , Robert Ito , Norman Lloyd , and Garry Walberg ) , " The Twilight Zone " ( in a segment with Fran Bennett and John Glover ) , " The Colbys " ( with Joseph Campanella , Ricardo Montalban , and Tracy Scoggins ) , " Murder , She Wrote " ( with Richard Cox ) , and " Cheers " ( starring Kirstie Alley and Kelsey Grammer ) . In the early 1990s , Gierasch appeared on such shows as " Tales from the Crypt " ( with Mark Rolston , Jeff Yagher , and the voice of John Kassir ) and " Knots Landing " ( with Bruce Greenwood ) . His later TV guest spots included episodes of " The Practice " ( with Bob Clendenin and Gregory Itzin ) , " The Pretender " ( with Steven Anderson , Cathy DeBuono , Jay Karnes , and Daniel Dae Kim ) , and " ER " ( with Robert DoQui and Kieran Mulroney ) . Regular roles . In 1978 , Gierasch was a regular on the short - lived comedy series " A . E . S . Hudson Street " . His fellow cast members on this show included actress Rosana DeSoto , actor Allan Miller , and " Deep Space Nine " guest star Gregory Sierra . In 1991 , Gierasch starred on the short - lived MGM / NBC re - imagining of the Gothic soap opera " Dark Shadows " . He played two characters on this show , Professor Woodward and Joshua Collins . The latter character was the father of Barnabas Collins , who was played by Ben Cross , and the husband of Naomi Collins , played by Jean Simmons . TV movies and mini - series . Gierasch had a supporting role in the 1974 TV movie " This Is the West That Was " , along with Kim Darby and Lance LeGault . In 1976 , Marvin Chomsky directed Gierasch , Bibi Besch , Theodore Bikel , Allan Miller , and Harris Yulin in the TV movie " Victory at Entebbe " . In 1979 , Gierasch was seen in the movie " Beggarman , Thief " , which starred Jean Simmons . In the 1980s , Gierasch appeared in such TV movies as " My Wicked , Wicked Ways . . . The Legend of Errol Flynn " ( starring Duncan Regehr in the title role and co - starring George Coe , Dick Durock , Alan Oppenheimer , and TNG regular Denise Crosby ) and " Shannon ' s Deal " ( with Miguel Ferrer and Spencer Garrett ) . Gierasch again worked with Miguel Ferrer in the 1992 TV movie " Cruel Doubt " , which co - starred Jordan Lund and Neal McDonough . He was also one of the many " Star Trek " alumni to appear in the 1986 mini - series " Dream West " . Among his co - stars on this series were F . Murray Abraham , Jeff Allin , Erich Anderson , John Anderson , Lee Bergere , James Cromwell , Michael Ensign , Jonathan Frakes , Alice Krige , Matt McCoy , Glenn Morshower , Fritz Weaver , Noble Willingham , and Anthony Zerbe . Gierasch appeared in two TV movies in 1996 . The first was " The Rockford Files : Friends and Foul Play " , which co - starred Molly Hagan . The second was " Crime of the Century " , with Bill Bolender , Jeffrey Alan Chandler , Brad Greenquist , and Bert Remsen . Feature films . Gierasch made his film debut in 1957 , co - starring with TOS guest actors Paul Carr and Gene Lyons in the drama " The Young Don ' t Cry " . He then played the preacher in the acclaimed 1961 drama " The Hustler " . In 1970 , Gierasch and Marianna Hill co - starred together in " The Traveling Executioner " , playing siblings who are marked for execution . Gierasch and Hill later acted together in the 1973 Clint Eastwood western " High Plains Drifter " and in the 1980 mystery " Blood Beach " . " The Traveling Executioner " also featured " Star Trek " alumni Graham Jarvis , Logan Ramsey , and James Sloyan , while Mitchell Ryan co - starred in " High Plains Drifter " and Ian Abercrombie appeared in " Blood Beach " . In 1972 , Gierasch was seen as Fritz in the classic Peter Bogdanovich comedy " What ' s Up , Doc ? " . This film also featured Graham Jarvis and starred " Deep Space Nine " guest actor Kenneth Mars . Later that same year , Gierasch played Del Gue in the acclaimed western drama " Jeremiah Johnson " . In 1975 , Gierasch co - starred with Hal Baylor , Bernie Casey , Thalmus Rasulala , Madge Sinclair , and the aforementioned Logan Ramsey in the drama " Cornbread , Earl and Me " . Gierasch played Mr . Morton in Brian De Palma ' s 1976 revenge horror classic " Carrie " . That same year , he appeared in the action comedy " Silver Streak " . He played two roles in this film : an art historian named Professor Schreiner and one of Schreiner ' s killers , Johnson . Another of Schreiner ' s killers , named Whiney , was played by fellow TNG guest star Ray Walston . Gierasch ' s subsequent film credits include " The Champ " ( 1979 , co - starring Elisha Cook , Jr . and Allan Miller ) , " Spellbinder " ( 1988 , with Richard Fancy and Cary - Hiroyuki Tagawa ) , and " Mistress " ( 1992 ) . He then appeared in two comedies with Frank Langella , " Dave " ( 1993 ) and " Junior " ( 1994 ) . In the former , he played the House Majority Leader opposite Parley Baer , who played the Senate Majority Leader . Robin Gammell and Stephen Root also appeared in " Dave " , while Alexander Enberg and Lawrence Tierney co - starred in " Junior " . Gierasch next played Warden Humson in the 1995 thriller " Murder in the First " , which starred Christian Slater and co - starred Brad Dourif . More recently , Gierasch co - starred with TNG ' s Denise Crosby in the western horror film " Legend of the Phantom Rider " ( also featuring George Murdock ) . Gierasch most recently worked with Conor O ' Farrell and Michael Rider in the 2009 independent western " The Hunter ' s Moon " . Other " Trek " connections . Additional credits not mentioned above in which Gierasch worked with other " Star Trek " alumni include :