Current Table

Top 10 Writers of Medical Professional Liability Insurance By Direct Premiums Written, 2020

($000)

Rank Group/company Direct premiums written (1) Market share (2)
1 Berkshire Hathaway Inc. $1,714,357 16.9%
2 The Doctors Company 962,440 9.5
3 CNA Financial Corp. 609,085 6.0
4 Coverys Insurance Group 522,585 5.2
5 ProAssurance Corp. 436,210 4.3
6 MCIC Vermont 425,006 4.2
7 MagMutual Insurance Co. 368,857 3.6
8 NORCAL Mutual Insurance Co. 359,876 3.6
9 Liberty Mutual 262,878 2.6
10 MMIC Group Inc. 172,709 1.7

(1) Before reinsurance transactions, includes state funds.
(2) Based on U.S. total, includes territories.

Source: NAIC data, sourced from S&P Global Market Intelligence, Insurance Information Institute.

 
Top 10 Writers of Medical Professional Liability Insurance By Direct Premiums Written, 2019

($000)

Rank Group/company Direct premiums written (1) Market share (2)
1 Berkshire Hathaway Inc. $1,660,142 17.1%
2 The Doctors Company 920,009 9.5
3 CNA Financial Corp. 559,455 5.8
4 ProAssurance Corp. 490,242 5.0
5 Coverys Insurance Group 488,001 5.0
6 MCIC Vermont 398,529 4.1
7 NORCAL Mutual Insurance Co. 370,785 3.8
8 MagMutual Insurance Co. 313,187 3.2
9 Liberty Mutual 217,779 2.2
10 Physicians' Reciprocal Insurers 169,871 1.7

(1) Before reinsurance transactions, includes state funds.
(2) Based on U.S. total, includes territories.

Source: NAIC data, sourced from S&P Global Market Intelligence, Insurance Information Institute.