Exhibit 24.1

POWER OF ATTORNEY

Know all by these presents, that the undersigned
hereby constitutes and appoints each of Martin P.
Galvan and Catherine A. Petko, signing individually,
the undersigned's true and lawful attorneys-in fact
and agents to:

(1) execute for and on behalf of the undersigned, an
officer, director or holder of 10% of more of a
registered class of securities of CardioNet, Inc. (the
"Company"), Forms 3, 4 and 5 in accordance with
Section 16(a) of the Securities Exchange Act of 1934,
as amended (the "Exchange Act") and the
rules thereunder;

(2) do and perform any and all acts for and on behalf
of the undersigned that may be necessary or desirable
to complete and execute such Form 3, 4 or 5, complete
and execute any amendment or amendments thereto, and
timely file such forms or amendments with the United
States Securities and Exchange Commission and any
stock exchange or similar authority; and

(3) take any other action of any nature whatsoever in
connection with the foregoing which, in the opinion of
such attorney-in-fact, may be of benefit, in the best
interest of, or legally required by, the undersigned,
it being understood that the documents executed by
such attorney-in-fact on behalf of the undersigned
pursuant to this Power of Attorney shall be in such
form and shall contain such terms and conditions as
such attorney-in-fact may approve in such attorney-in-
fact's discretion.

The undersigned hereby grants to each such attorney-
in-fact full power and authority to do and perform any
and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any
of the rights and powers herein granted, as fully to
all intents and purposes as the undersigned might or
could do if personally present, with full power of
substitution or revocation, hereby ratifying and
confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this
power of attorney and the rights and powers herein
granted.  The undersigned acknowledges that the
foregoing attorneys-in-fact, in serving in such
capacity at the request of the undersigned, are not
assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with
Section 16 of the Exchange Act.

This Power of Attorney shall remain in full force and
effect until the earliest to occur of (a) the
undersigned is no longer required to file Forms 3, 4
and 5 with respect to the undersigned's holdings of
and transactions in securities issued by the Company,
(b) revocation by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact or (c) as
to any attorney-in-fact individually, until such
attorney-in-fact shall no longer be employed by the
Company.

IN WITNESS WHEREOF, the undersigned has caused this
Power of Attorney to be executed as of this 10th day of
November, 2008.

/s/ Eric N. Prystowsky, M.D.
Eric N. Prystowsky, M.D.