LIMITED POWER OF ATTORNEY FOR SECTION 16 REPORTING OBLIGATIONS

Know all by these presents, that the undersigned hereby makes,
constitutes and appoints Michael E. Tarvin as the undersigned's
true and lawful attorney-in-fact, with full power and authority
as hereinafter described on behalf of and in the name, place and
stead of the undersigned to:

(1) prepare, execute, acknowledge, deliver and file Forms 3, 4,
and 5 (including any amendments thereto) with respect to the
securities of Select Medical Holdings Corporation, a Delaware
corporation (the "Company"), with the United States Securities
and Exchange Commission, any national securities exchanges and
the Company, as considered necessary or advisable under Section
16(a) of the Securities Exchange Act of 1934 and the rules and
regulations promulgated thereunder, as amended from time to time
(the "Exchange Act");

(2) seek or obtain, as the undersigned's representative and on
the undersigned's behalf, information on transactions in the
Company's securities from any third party, including brokers,
employee benefit plan administrators and trustees, and the
undersigned hereby authorizes any such person to release any such
information to the undersigned and approves and ratifies any such
release of information; and

(3) perform any and all other acts which in the discretion of
such attorney-in-fact are necessary or desirable for and on
behalf of the undersigned in connection with the foregoing.

The undersigned acknowledges that:

(1) this Power of Attorney authorizes, but does not require, such
attorney-in-fact to act in their discretion on information
provided to such attorney-in-fact without independent
verification of such information;

(2) any documents prepared and/or executed by such attorney-in-
fact on behalf of the undersigned pursuant to this Power of
Attorney will be in such form and will contain such information
and disclosure as such attorney-in-fact, in his discretion, deems
necessary or desirable;

(3) neither the Company nor such attorney-in-fact assumes (i) any
liability for the undersigned's responsibility to comply with the
requirements of the Exchange Act, (ii) any liability of the
undersigned for any failure to comply with such requirements, or
(iii) any obligation or liability of the undersigned for profit
disgorgement under Section 16(b) of the Exchange Act; and

(4) this Power of Attorney does not relieve the undersigned from
responsibility for compliance with the undersigned's obligations
under the Exchange Act, including without limitation the
reporting requirements under Section 16 of the Exchange Act.

The undersigned hereby gives and grants the foregoing attorney-
in-fact full power and authority to do and perform all and every
act and thing whatsoever requisite, necessary or appropriate to
be done in and about the foregoing matters as fully to all
intents and purposes as the undersigned might or could do if
present, hereby ratifying all that such attorney-in-fact of, for
and on behalf of the undersigned, shall lawfully do or cause to
be done by virtue of this Power of Attorney.

This Power of Attorney shall remain in full force and effect
until revoked by the undersigned in a signed writing delivered to
such attorney-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 16th day of December, 2020.

/s/ Katherine R. Davisson
Name: Katherine R. Davisson

STATE OF FLORIDA
COUNTY OF MIAMI-DADE

On this 14th day of April 2021, Katherine R. Davisson personally
appeared before me, and acknowledged that she executed the
foregoing instrument for the purposes therein contained.

IN WITNESS WHEREOF, I have hereunto set my hand and official
seal.

Signature: /s/ Alexander Friedman

My Commission Expires: 02-08-2022

State of Florida - Notary Seal
Alexander Friedman
Notary Public
State of Florida
Commission Number GG182408
My Commission Expires 02-08-2022