Why should residents and fellows aim to have their contracts set with their new employers up to six months before starting work?
One of the main reasons is the time necessary for all the paperwork involved to be completed.
This list of medical licensing boards is provided for your research reference.
State            Organization                              Web address
Alabama         Alabama Board of Medical Examiners        albme.org
Alaska           Alaska State Medical Board                 dced.state.ak.us/occ/pmed.htm
Arizona          Arizona Medical Board                      azmd.gov
Arizona (D.O.)    AZ Board of Osteo. Examiners in Med. & Surg. azdo.gov
Arkansas        Arkansas State Medical Board                armedicalboard.org
California        Medical Board of California                  mbc.ca.gov
California (D.O.)  Osteopathic Medical Board of California       ombc.ca.gov
Colorado        Colorado Board of Medical Examiners         dora.state.co.us/medical
Connecticut      Connecticut Medical Examining Board         dph.state.ct.us
Delaware       Delaware Board of Medical Practice           dpr.delaware.gov
D.C.            District of Columbia Board of Medicine        dchealth.dc.gov
Florida         Florida Board of Medicine                   doh.state.fl.us
Florida (D.O.)   Florida Board of Osteopathic Medicine        floridasosteopathicmedicine.gov
Georgia         GA Composite State Board of Med. Examiners   medicalboard.georgia.gov
Hawaii          Hawaii Medical Board                       hawaii.gov/dcca/pvl
Idaho           Idaho State Board of Medicine                bom.state.id.us
Illinois         IL Dept. of Financial & Prof. Regulation        idfpr.com
Indiana        Medical Licensing Board of Indiana            in.gov/pla/medical.htm
Iowa           Iowa Board of Medicine                      medicalboard.iowa.gov
Kansas         Kansas Board of Healing Arts                 ksbha.org
Kentucky      Kentucky Board of Medical Licensure           kbml.ky.gov
Louisiana      Louisiana State Board of Medical Examiners     lsbme.louisiana.gov
Maine         Maine Board of Licensure in Medicine          docboard.org/me/me_home.htm
Maine (D.O.)   Maine Board of Osteopathic Licensure          maine.gov/osteo/
Maryland      Maryland Board of Physicians                 mbp.state.md.us/
Mass.         Commonwealth of MA Bd. of Reg. in Medicine   massmedboard.org
Michigan      MI Board of Med./MI Board of Osteo. Med. & Surg. michigan.gov/healthlicense
Minnesota     Minnesota Board of Medical Practice           bmp.state.mn.us
Mississippi     Mississippi State Board of Medical Licensure   msbml.state.ms.us
Missouri       MO State Board of Reg. for the Healing Arts    pr.mo.gov/healingarts.asp
Montana       Montana Board of Medical Examiners          bsd.dli.mt.gov
Nebraska      Nebraska Board of Medicine & Surgery         hhs.state.ne.us/
Nevada        Nevada State Board of Medical Examiners      medboard.nv.gov
Nevada (D.O.)  Nevada State Board of Osteopathic Medicine   bom.nv.gov
N.H.           New Hampshire State Board of Medicine       state.nh.us/medicine
New Jersey    NJ State Board of Medical Examiners          state.nj.us/lps/ca/medical.htm
New Mexico    New Mexico Medical Board                  nmmb.state.nm.us
N.M. (D.O.)    N.M. Board of Osteo. Medical Examiners       rld.state.nm.us/
New York      New York State Board for Medicine            op.nysed.gov
N.C.           North Carolina Medical Board                ncmedboard.org
N.D.          N.D. State Board of Medical Examiners         ndbomex.com
Ohio          State Medical Board of Ohio                  med.ohio.gov
Oklahoma     Okla. State Bd. of Med. Licensure & Supervision okmedicalboard.org
Okla. (D.O.)    Oklahoma State Board of Osteo. Examiners     ok.gov/osboe/
Oregon        Oregon Medical Board                       oregon.gov/bme
Pennsylvania   PA State Bd. of Med./PA State Board of Osteo. Med. dos.state.pa.us
Rhode Island   RI Board of Medical Licensure & Discipline     health.ri.gov/hsr/bmld
South Carolina South Carolina Board of Medical Examiners    llr.state.sc.us/pol/medical
South Dakota  S.D. State Board of Med. & Osteo. Examiners   sdbmoe.gov
Tennessee     Tennessee Board of Medical Examiners        health.state.tn.us
Tennessee     Tennessee Board of Osteopathic Exam.         health.state.tn.us/boards/Osteo/
Texas         Texas Medical Board                         tmb.state.tx.us
Utah          Utah Department of Commerce               dopl.utah.gov
Vermont      Vermont Board of Medical Practice            healthvermont.gov
Vermont (D.O.) VT Board of Osteo. Physicians & Surgeons     vtprofessionals.org
Virginia        Virginia Board of Medicine                  dhp.virginia.gov
Washington     State Medical Quality Assurance Commission,
Washington State Board of Osteopathic Medicine & Surgery   doh.wa.gov
West Virginia   West Virginia Board of Medicine            wvdhhr.org/wvbom
W.Va. (D.O.)    West Virginia Board of Osteopathy         wvbdosteo.org
Wisconsin      Wisconsin Medical Examining Board        drl.state.wi.us
Wyoming       Wyoming Board of Medicine               wyomedboard.state.wy.us