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Top 10 Writers of Medical Professional Liability Insurance By Direct Premiums Written, 2023
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($000)

Rank Group/company Direct premiums written (1) Market share (2)
1 Berkshire Hathaway Inc. $2,126,654 17.5%
2 The Doctors Company 1,207,187 9.9
3 CNA Financial Corp. 695,574 5.7
4 ProAssurance Corp. 691,934 5.7
5 MagMutual Insurance Co. 581,131 4.8
6 Coverys Insurance Group 507,981 4.2
7 MCIC Vermont 458,757 3.8
8 Curi 394,780 3.2
9 Liberty Mutual 382,551 3.1
10 Chubb Ltd. 222,177 1.8

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

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

 

Archived Tables

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

 
Top 10 Writers of Medical Professional Liability Insurance By Direct Premiums Written, 2020
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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, 2021
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($000)

Rank Group/company Direct premiums written (1) Market share (2)
1 Berkshire Hathaway Inc. $1,944,101 17.4%
2 The Doctors Company 1,070,669 9.6
3 ProAssurance Corp. 739,157 6.6
4 CNA Financial Corp. 638,680 5.7
5 Coverys Insurance Group 574,677 5.1
6 MagMutual Insurance Co. 417,644 3.7
7 MCIC Vermont 384,988 3.4
8 Liberty Mutual 307,729 2.8
9 Chubb Ltd. 201,437 1.8
10 MMIC Group Inc. 187,775 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, 2022
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($000)

Rank Group/company Direct premiums written (1) Market share (2)
1 Berkshire Hathaway Inc. $2,091,818 18.1%
2 The Doctors Company 1,127,440 9.8
3 ProAssurance Corp. 716,780 6.2
4 CNA Financial Corp. 633,374 5.5
5 Coverys Insurance Group 526,478 4.6
6 MagMutual Insurance Co. 479,829 4.2
7 MCIC Vermont 459,851 4.0
8 Liberty Mutual 329,359 2.9
9 Chubb Ltd. 208,364 1.8
10 ISMIE 201,317 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.