First> some research >
The Prophecy Club & Elijah
http://www.seekgod.ca/prophclub.htm
The Prophecy Club Part 2
http://www.seekgod.ca/prophecyclub2.htm
Deagle claims his prophecies come from the angel Gabriel, who appears to him on a regular basis, and it all comes directly from the 'throne of glory.' While with the Prophecy club, Stan Johnson stated Deagle was one of the two witnesses.
One would think then, that he would not have had his medical licence revoked in direct connection to his perscriptions of addictive drugs etc. 
His teachings are dispensational, with some 7th day advenist beliefs and other...ie america is the false prophet or the 2nd beast in revelation 13. Deagle viewed Gorbachev as the Antichrist. He uses Scripture to support his theories--albeit incorrectly and unsubstantiated doctrines and 'facts'. 
A website review of his writings 'Clay and Iron. > http://www.christianmediaresearch.com/billdeagle.html
From that source>
"...As I stated in the beginning of this critique, this particular book would have been quickly dismissed as just so much poor writing had it not been for the backing of the Prophecy Club® and Dr. Deagle's claim that Gabriel was regularly visiting him and giving him prophetic instruction. But Dr. Deagle's audacious claims don't end there. Not only does he tell us Gabriel regularly shows up with prophetic instruction, he actually blames the incredibly sloppy writing in Clay and Iron on the Lord.
Incredibly, in a 1999 newsletter, Dr Bill Deagle tells us this very book, Clay and Iron, was dictated to him by the Lord himself. Dr. Deagle writes, "Eleven years ago when the Lord dictated Clay and Iron and gave the keys of interpretation and unsealing of scripture, I received a Word from the Lord and a vision."32.
During this supposed "vision," the Lord not only "dictated" this unscriptural gobbledy-goop Deagle calls a book, God also gave Dr. Deagle all sorts of information that is contrary to basic Bible. For instance, he has the Lord referring to "My Holy Nations" that He has chosen to deliver great wealth to in the end times. Ah yes, we thought some monetary component would show up soon! After all, isn't that the pattern? Whenever "God" or "Gabriel" starts visiting someone and giving them unscriptural instruction, eventually that instruction always seems to involve money!..."
...It seems that during another of his visitations from the Lord, which Deagle dates at July 1999, God decided to give the physician turned prophet a new position. Deagle claims the Lord himself told him "I have chosen you out of all your brethren, to minister as a leader as I chose Moses."33. This "calling" is a high one, for Deagle describes his role as helping "the hearts of the children [to] turn to the fathers and the fathers to the children for the Day of Decision is at hand."34. This statement, written by Dr. Deagle, is obviously a paraphrase of the famous passage in Malachi alluding to the return of the prophet Elijah in the end times.
Because Elijah is widely perceived to be one of the two witnesses, it would seem Deagle is invoking this phrase in order to move closer to his claim of being one of the two witnesses. The problem is, of course, the Lord told him "I have chosen you" in the likeness of Moses - as opposed to Elijah. In his late 1999 newsletter, Dr. Deagle does, however, revert to his "Moses" character. In fact, he names an associate as the Elijah figure who is to accompany him on his great mission. Apparently, the other witness is an unknown individual named Pastor Ricardo Baeza, who just happens to be the co-author of a forthcoming book by Dr. Deagle. Deagle writes "I have received the mantel of Moses, and Ricardo the mantel of Elijah."35. ..."
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Deagle had his medical licence revoked in Colorado and was forced to move back Canada.
http://www.dora.state.co.us/medical/form...ical08.pdf
William R. Deagle, M.D. Halifax, Canada License #33863
On August 17, 2007, Inquiry Panel B approved a Final Board Order whereby Dr. Deagle’s license to practice medicine in the state of Colorado is revoked. The Order is open for public inspection and reported as required by law.
William R. Deagle, M.D., Halifax, Nova Scotia License #33863
On May 23, 2006, a Formal Complaint was filed with the Office of Administrative Courts. The Formal Complaint is open for public inspection.
William R. Deagle, M.D., Denver, CO License #33863
On April 20, 2004, Inquiry Panel A approved a Stipulation for Interim Agreement of Practice requiring practice restrictions and practice monitoring. The Stipulation is open for public inspection and is reported as required by law.
William R. Deagle, M.D., Denver, CO License #33863
On March 22, 2004, the Colorado Board of Medical Examiners suspended the license of William R. Deagle pursuant to 24-4-104, C.R.S. The Summary Suspension Order is open for public inspection and is reported as required by law.
https://www.doradls.state.co.us/alison.p...TAz&t_o_p=
Medical Revocation Final Board Order signed to revoke Dr. Deagle's Colorado medical license as recommended by Administrative Law Judge. 08/15/2007
Formal Complaint-Charges with OAC Formal Complaint filed with Office of Administrative Courts. Initial Decision signed by Administrative Law Judge on June 1, 2007. 05/23/2006 08/15/2007
Stipulation in Abeyance Dr. Deagle left the state and moved to Canada. Interim Stipulation placed in abeyance but the underlying cases are still pending final resolution. Dr. Deagle's license is revoked effective August 15, 2007. 07/30/2004 08/15/2007
Stipulation Stipulation for Interim Agreement of Practice includes practice restrictions/prescription log and practice monitoring. Please note that this is not the final resolution of the pending matters. 04/20/2004 07/30/2004
Summary Suspension pursuant to 24-4-104(4), CRS
https://doraimage.state.co.us/LibertyIMS...Z%3D%230q7
You can view the 3 available documents pertaining to the eventual revoke of his license and requirement to go back to Canada.
Deagle had presecribed medications that were addictive and were toxic or reactive with the other meds her prescribed. One person died...either toxicity or whatever. Another person was in serious condition because of addiction to the meds, running out and not getting a refill from Deagle. I wasnt clear if this was all one case, although there were roughly half a dozen cases/files reviewed by the Medical Board. 
Quite frankly, his former association and promotion by Stan Johnson is enough to eliminate him as a source of anything, let alone his absurd claims of direct dictation from the Lord for his book, and being one of the 2 witnesses, a "prophet" busy making money off his 'prophecies'....and a medical doctor whose license was revoked.
I doubt he has anything to offer medically either. 