Exhibit 99.1

                    PIC Wisconsin to Merge into ProAssurance

     BIRMINGHAM, Ala.--(BUSINESS WIRE)--Dec. 8, 2005--ProAssurance Corporation
(NYSE:PRA):

     SUMMARY

     ProAssurance Corporation and Physicians Insurance Company of Wisconsin,
Inc. ("PIC Wisconsin") announce the planned merger of PIC Wisconsin into
ProAssurance through a proposed stock-for-stock transaction. The merger will
expand ProAssurance's presence in the upper Midwest and provide access to states
ProAssurance does not yet serve. The transaction should close in mid-2006 and is
expected to be immediately accretive to ProAssurance's book value.

     ProAssurance Corporation (NYSE: PRA) announced today that it has signed a
definitive agreement that will merge Physicians Insurance Company of Wisconsin,
Inc. ("PIC Wisconsin") into ProAssurance in an all stock transaction. The
transaction which must be approved by PIC Wisconsin shareholders, and is subject
to required regulatory approvals, may close as early as mid-2006.
     The definitive agreement calls for each share of PIC Wisconsin stock to be
converted into shares of ProAssurance stock having a value of $5,000. The
exchange ratio is based on the average closing price of a share of ProAssurance
stock on the ten trading days preceding the effective date of the merger. This
ratio is subject to a 20% range around $49.76, which is the average closing
price in the ten days preceding the date of the definitive agreement. Thus, PIC
Wisconsin shareholders may receive more than $5,000 for each share of stock if
the average closing price of ProAssurance stock is more than $59.71; conversely,
PIC Wisconsin shareholders may receive less than $5,000 per share if the average
closing price of ProAssurance stock is less than $39.80. This values PIC
Wisconsin at approximately $100 million, based on 19,741 shares that are
expected to be outstanding at the time of the transaction. ProAssurance expects
the transaction to be immediately accretive to book value per share.
     "ProAssurance has a demonstrated history of successfully identifying and
integrating companies that strengthen and expand our existing business and
provide an entry into attractive markets where we can serve new customers and
meet our goals for profitable growth," said A. Derrill Crowe, M.D., the Chairman
and CEO of ProAssurance. Dr. Crowe noted that the core business of PIC Wisconsin
will provide ProAssurance with a leadership position in Wisconsin and extend the
Company's business in other upper Midwestern and Western states. He also said,
"We are not only expanding our Midwestern presence in this transaction, we are
adding skilled insurance executives and staff to our team."
     The President and COO of ProAssurance, Victor T. Adamo, said ProAssurance
is excited about the opportunities presented by the transaction. He commented,
"PIC Wisconsin has a long, successful track record as the leading writer in its
home state, and has embarked on a careful expansion throughout the region.
Through this transaction we expect to add more than 9,000 policyholders as we
expand our footprint west into Wisconsin, Minnesota, Nebraska, Nevada, and South
Dakota, and add to our business in Illinois, Iowa, and Kansas."
     William T. Montei, PIC Wisconsin's President and CEO, said, "Our merger
into ProAssurance strengthens PIC Wisconsin's ability to meet the needs of our
policyholders. He said, "ProAssurance shares our commitment to provide our
insureds with the finest services and claims defense. This shared vision -- as
well as our common history as doctor-founded companies -- was a major factor in
identifying ProAssurance as our strategic partner."
     William J. Listwan, M.D., the Chairman of PIC Wisconsin, said the
transaction also allows PIC Wisconsin to meet another important goal of
providing liquidity for its shareholders. He said, "The structure of our
transaction gives our shareholders, many of whom remain insured by the company,
financial flexibility and rewards them for their investment that provided the
financial foundation on which PIC Wisconsin was built. ProAssurance's presence
on the New York Stock Exchange allows us to provide this liquidity while
enhancing the financial strength that will help us stand behind our insurance
commitments."
     The proposed transaction will require the approval of PIC Wisconsin's
stockholders and state and federal regulators. ProAssurance and PIC Wisconsin
will file with the SEC a registration statement, a proxy statement/prospectus
and other relevant documents concerning the proposed transaction. Stockholders
of PIC Wisconsin are urged to read the registration statement and the proxy
statement/prospectus when they become available and any other relevant documents
filed with the SEC, as well as any amendments or supplements to those documents,
as they will contain important information.
     The Boards of both companies have approved the transaction. PIC Wisconsin's
Board, which is being advised by Cochran, Caronia & Co., has recommended that
their stockholders approve the merger. ProAssurance's Board is being advised by
Morgan Keegan & Company, Inc.
     You will be able to obtain a free copy of the proxy statement/prospectus,
as well as other filings containing information about ProAssurance, at the SEC's
Internet site (http://www.sec.gov). Copies of the proxy statement/prospectus and
the SEC filings that will be incorporated by reference in the proxy
statement/prospectus can be obtained, without charge, by directing a request to
Frank B. O'Neil, Senior Vice President, Corporate Communications, ProAssurance
Corporation, 100 Brookwood Place, Birmingham, Alabama 35209, tel: (205)
877-4461.
     PIC Wisconsin Group, Inc. and its respective directors and executive
officers may be deemed to be participants in the solicitation of proxies from
the stockholders of PIC Wisconsin in connection with the proposed merger.
Information about the directors and executive officers of PIC Wisconsin and
their ownership of PIC Wisconsin common stock will be set forth in the required
filings with the SEC.

     About ProAssurance

     ProAssurance Corporation is a specialty insurer with more than $3.4 billion
in assets and almost $790 million in gross written premiums. We are the nation's
fourth largest writer of medical professional liability insurance and our
principal professional liability subsidiaries are The Medical Assurance Company,
Inc., ProNational Insurance Company, NCRIC, Inc., and Red Mountain Casualty
Insurance Company. We also write professional liability coverage through
Woodbrook Casualty Insurance Company. We are the tenth largest writer of
personal auto coverage in Michigan through our subsidiary, MEEMIC Insurance
Company, although we will exit the personal lines business upon the expected
sale of MEEMIC. A.M. Best assigns a rating of "A-" (Excellent) to the
ProAssurance Group, MEEMIC and our principal professional liability
subsidiaries, except NCRIC, Inc. which is rated B++ (Very Good). Standard &
Poor's assigns our principal professional liability carriers a rating of "A-"
("Strong") but has not yet issued a rating for NCRIC, Inc. Fitch assigns a
rating of "A-" to ProAssurance and our subsidiaries.

     About Physicians Insurance Company of Wisconsin

     PIC WISCONSIN was founded two decades ago by the Wisconsin Medical Society
in an effort to improve the availability of insurance and to stabilize premium
costs. During those twenty years, they have advocated for the healthcare
industry, helping to promote legislation and reform that protects healthcare
professionals and their patients. They are the largest writer of professional
liability insurance in Wisconsin. The company has $277 million in total assets
and $76.5 million in gross written premiums. They are rated "A-" (Excellent)
with a stable outlook by A.M. Best, a rating they have maintained for the last
nine years.


         Selected Statutory Data for PIC Wisconsin (in 000's)

                                             2004       Sept. 30, 2005
Direct Premiums Written                  $     79,435   $      64,127
Net Premiums Earned                      $     56,489   $      38,720

Total Investments                        $    247,320   $     248,109
Total Assets                             $    274,954   $     277,439
Loss &LAE Reserves                       $    140,804   $     143,467
Equity                                   $     89,300   $      83,253


     PIC Wisconsin is a Wisconsin-domiciled stock insurance company; its shares
are not registered under the Securities Exchange Act of 1934. There is no GAAP
financial data available for PIC Wisconsin. You should keep this in mind when
comparing financial data for ProAssurance and PIC Wisconsin.

     Caution Regarding Forward-Looking Statements

     This news release contains historical information as well as
forward-looking statements that are based upon our estimates and anticipation of
future events that are subject to certain risks and uncertainties that could
cause actual results to vary materially from the expected results described in
the forward-looking statements. The words "anticipate," "believe," "estimate,"
"expect," "hopeful," "intend," "may," "optimistic," "preliminary," "project,"
"should," "will," and similar expressions are intended to identify these
forward-looking statements. There are numerous important factors that could
cause our actual results to differ materially from those in the forward-looking
statements. Thus, sentences and phrases that we use to convey our view of future
events and trends are expressly designated as Forward-Looking Statements as are
sections of this news release clearly identified as giving our outlook on future
business. The principal risk factors that may cause actual results to differ
materially from those expressed in the forward-looking statements are described
in various documents we file with the Securities and Exchange Commission,
including Form 10K for the year ended December 31, 2004 and Form 10Q for the
most recent quarter.
     These forward-looking statements are subject to significant risks,
assumptions and uncertainties, including, among other things, the following
important factors that could affect the actual outcome of future events:

     Relating to the ongoing operations of the combined companies:

     --   General economic conditions, either nationally or in our market area,
          that are worse than expected;

     --   regulatory and legislative actions or decisions that adversely affect
          our business plans or operations;

     --   price competition;

     --   inflation and changes in the interest rate environment the performance
          of financial markets and/or changes in the securities markets that
          adversely affect the fair value of our investments or operations;

     --   changes in laws or government regulations affecting medical
          professional liability insurance and practice management and financial
          services;

     --   changes to our ratings assigned by A.M. Best;

     --   the effect of managed healthcare;

     --   uncertainties inherent in the estimate of loss and loss adjustment
          expense reserves and reinsurance; and changes in the availability,
          cost, quality, or collectibility of reinsurance;

     --   significantly increased competition among insurance providers and
          related pricing weaknesses in some markets.

     --   changes in accounting policies and practices, as may be adopted by our
          regulatory agencies and the Financial Accounting Standards Board; and

     --   changes in our organization, compensation and benefit plans.

     Relating to the proposed transaction with PIC Wisconsin:

     --   The business of ProAssurance and PIC Wisconsin may not be combined
          successfully, or such combination may take longer to accomplish than
          expected;

     --   the cost savings from the merger may not be fully realized or may take
          longer to realize than expected;

     --   operating costs, customer loss and business disruption following the
          merger, including adverse effects on relationships with employees, may
          be greater than expected;

     --   governmental approvals of the merger may not be obtained, or adverse
          regulatory conditions may be imposed in connection with governmental
          approvals of the merger;

     --   restrictions on our ability to achieve continued growth through
          expansion into other states or through acquisitions or business
          combinations; and

     --   the stockholders of PIC Wisconsin may fail to approve the merger.

     The Cautions stated above also apply to ProAssurance's previously announced
transaction in which we expect to sell our personal lines subsidiary, MEEMIC
Insurance Company and its internal agency to Motors Insurance Corporation, a
subsidiary of GMAC Insurance Holdings, Inc.
     We wish to caution readers not to place undue reliance on any such
forward-looking statements, which speak only as of the date made, and wish to
advise readers that the factors listed above could affect our financial
performance and could cause actual results for future periods to differ
materially from any opinions or statements expressed with respect to future
periods in any current statements. We do not undertake and specifically decline
any obligation to publicly release the result of any revisions that may be made
to any forward-looking statements to reflect events or circumstances after the
date of such statements or to reflect the occurrence of anticipated or
unanticipated events.


     CONTACT: ProAssurance
              Frank B. O'Neil, 800-282-6242 or 205-877-4461
              foneil@ProAssurance.com