Trying to find out something about a physician named Sam Harrell if he
still has valid license, any troubles.

Hello.

Yes, Sam Harrell,M.D., still has a valid medical license in the state
of Washington.  The Washington State Department of Health indicates
that Dr Harrell does NOT have any current troubles (i.e., disciplinary
actions).

Name: HARRELL, SAM R 
...
Credential Number: MD00031463
Credential Type: Physician And Surgeon
Current Credential Status: Active
First Credential Date: 11/28/1993
Expiration Date: 11/11/2004
Last Renewal Date: 10/16/2002
Action Taken: No

"Disclaimer. The disciplinary information displayed contains data
gathered since July 1998.  The absence or presence of information in
this system does not imply any recommendation, endorsement, or
guarantee of competence of any health care professional, nor does the
mere presence of such information imply a practitioner is not
competent or qualified. "
source:
Washington State Department of Health
https://fortress.wa.gov/doh/hpqa1/Application/Credential_Search/Profile_Results.asp?PCN=MD00031463&PID=15

search strategy:
"sam harrell md"
http://216.239.53.104/search?q=cache:M4jveSPs8IwJ:www.ama-assn.org/sci-pubs/amnews/pick_99/hlta0628.htm+%22sam+Harrell+md%22&hl=en&ie=UTF-8


I hope this helps.