Mark Crislip

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Mark Crislip
Mark at QED 2014
Born (1957-04-25) April 25, 1957 (age 58)
Cleveland, Ohio, US
Residence Portland, Oregon
Citizenship US
Fields Infectious diseases
Institutions Adventist Medical Center, Legacy Good Samaritan Medical Center, Legacy Meridian Park Medical Center, Legacy Mount Hood Medical Center
Alma mater University of Oregon (B.S.)
Oregon Health & Science University (M.D.)
Known for Scientific skepticism
Notable awards Podcast Award


recorded in February 2014

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Mark Alden Crislip (born April 25, 1957) is an infectious disease doctor in Portland, Oregon who hosts the award-winning QuackCast podcast. He also produces two other podcasts, has written and edited several books, and regularly writes articles for medicine-related blogs. He is a co-founder of the Institute for Science in Medicine as well as a co-founder and the current president of the Society for Science-Based Medicine.


Crislip was born in Cleveland, Ohio. He attended the University of Oregon from 1979 to 1983, where he earned a Bachelor of Science degree in physics. He then earned a Doctor of Medicine (MD) degree at the Oregon Health & Science University School of Medicine in 1983. He completed an internship and residency at Hennepin County Medical Center in Minneapolis in 1986, followed by a fellowship at Harbor–UCLA Medical Center.[1] He is currently a board-certified infectious disease specialist at several medical centers in the Portland area.[2]


Crislip is the producer and host of three podcasts: QuackCast, Gobbet of Pus, and PusCast.

Each episode of QuackCast features Crislip delivering a monologue about a topic related to medicine, usually a critique of an alternative medicine practice or set of beliefs. He was inspired to create his own science-based medicine show after listening to the popular podcast Slacker Astronomy.[3] The first episode of QuackCast was released on 5 May 2006, and other episodes have been released intermittently since then.[4] The podcast has won three Podcast Awards in the Health/Fitness category, for the years 2009, 2010, and 2011.[5]

Crislip has been producing the Gobbet o' Pus podcast since 2009. The show features short discussions of interesting cases he has encountered in his medical practice and other topics of interest to infectious disease specialists. A new episode is released every few days.[6][7]

PusCast (also known as Persiflagers Infectious Disease PusCast) is a bimonthly review of the infectious disease literature. Crislip has been producing this podcast since November 2006.[8]


Mark Crislip at the QED Conference 2014

Crislip is an editor of and writes biweekly posts for the Science-Based Medicine blog. He also posts several times a week on a blog for Medscape called Rubor, Dolor, Calor, Tumor.[9] He compiled selections from his Medscape blog into two e-books titled Puswhisperer: A Year in the Life of an Infectious Disease Doc[10] and Puswhisperer Part Deux: Another Year of Pus.[11]

He is the co-editor, along with Steven Novella and David Gorski, of a 12-volume series of Science-Based Medicine Guides, based on posts from the Science-Based Medicine blog.[12]

He is also the author of a medical app for Android and iPhone called Infectious Disease Compendium: A Guide to Infectious Diseases.[13]

Skeptic magazine published an article by Crislip in 2008 titled "Near Death Experiences and the Medical Literature," in which he criticized a Lancet article that reported on near-death experiences without considering all the physiological factors that may have accounted for patients' subjective experiences.[14]

Other activities[edit]

Mark Crislip (left) with David Gorski at The Amaz!ng Meeting 2011

Crislip is the president and co-founder of the Society for Science-Based Medicine, an organization that seeks to educate medical professionals and the general public about the importance of basing medical practices on science. It also advocates for laws that support the use of science in medicine. The organization's website features a wiki-based repository of material about questionable medical practices from Dr. Stephen Barrett's extensive Quackwatch website.[9]

He is a founding fellow of the Institute for Science in Medicine, a non-profit educational and policy institute that promotes science-based medical practices.[15]

Several organizations that promote science and skepticism have invited Crislip to give lectures about alternative medicine and the anti-vaccine movement. He has spoken at The Amaz!ng Meeting three times, most recently in 2013.[16] In June 2010 he gave a talk called "The Vaccine Pseudo-Controversy" for the Center for Inquiry Portland.[17] In November 2013 he spoke at a meeting of Oregonians for Science and Reason on the topic of "Supplement, Complementary and Alternative Medicine Myths."[18] He was also a featured speaker at the QED Conference in Manchester, England in April 2014.[19]


Crislip has been on the Top Docs list published by Portland Monthly magazine several times,[13] most recently in 2014.[20] U.S. News & World Report listed him as a Top U.S. Physician in 2012. The residents at his hospital also named him "Attending Most Likely to Tell It Like It Is."[13]


  1. ^ "Dr. Mark A. Crislip, MD". HealthGrades. Health Grades, Inc. Retrieved 4 February 2014. 
  2. ^ "Dr. Mark Crislip, Infectious Disease Specialist". U.S. News & World Report. Dyer, Kerry F. Retrieved 4 February 2014. 
  3. ^ "Skeptiles: Episode 32 – Dr. Mark Crislip, MD". Skeptiles Podcast. 23 April 2013. Retrieved 4 February 2014. 
  4. ^ Crislip, Mark. "Quackcasts (mp3)". Retrieved 20 January 2014. 
  5. ^ "Podcast Awards 2005–2012". Podcast Awards. 2013. Retrieved 20 January 2014. 
  6. ^ Nickson, Chris. "A Gobbet O' Pus". Life in the Fast Lane. Retrieved 17 February 2014. 
  7. ^ Crislip, Mark. "A Gobbet O' Pus". Retrieved 17 February 2014. 
  8. ^ Crislip, Mark. "Puscast". Retrieved 18 February 2014. 
  9. ^ a b Sturgess, Kylie (11 January 2014). "Episode One Hundred And Seventy Four – On Art And Science – Carbon Dating And The Society for Science-Based Medicine". Token Skeptic. Retrieved 8 February 2014. 
  10. ^ Crislip, Mark (2012). Puswhisperer: A Year in the Life of an Infectious Disease Doc. Pusware LLC. 
  11. ^ Crislip, Mark (2012). Puswhisperer Part Deux: Another Year of Pus. Pusware LLC. 
  12. ^ "Mark Crislip's Books". Goodreads. Goodreads Inc. Retrieved 23 February 2014. 
  13. ^ a b c "Mark Crislip Biography". Smashwords. Smashwords, Inc. Retrieved 18 February 2014. 
  14. ^ Crislip, Mark (2008). "Near Death Experiences and the Medical Literature". Skeptic 14 (2). 
  15. ^ "ISM – Our Fellows". ISM Website. Institute for Science in Medicine. Retrieved 24 February 2014. 
  16. ^ "Speakers". The Amaz!ng Meeting 2013. James Randi Educational Foundation. Retrieved 23 February 2014. 
  17. ^ "The Vaccine Pseudo-Controversy". Meetup. Retrieved 18 February 2014. 
  18. ^ "Speakers". Oregonians for Science and Reason. Retrieved 18 February 2014. 
  19. ^ "Guest Speakers". QED: Question, Explore, Discover. North West Skeptical Events Ltd. Retrieved 23 February 2014. 
  20. ^ "Who from Legacy made the local "top docs" list?". eDoc Talk News. Legacy Health. February 2014. Retrieved 18 February 2014. 

External links[edit]