EX-99

Exhibit 99.1
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Continutation of Responses

 (1)     The reporting person's remaining holdings of the Company's securities
         consist of 1,161,239 shares of Common Stock (the "Earn-out Shares")
         which are currently held by Bank of America, N.A. (the "Escrow Agent")
         pursuant to an Escrow Agreement (the "Escrow Agreement") dated March
         19, 2004 among the Company, the Escrow Agent and Haywood D. Cochrane,
         Jr. as a limited agent of certain former stockholders of Meridian
         Occupational Healthcare Associates, Inc., including the reporting
         person. Pursuant to the Escrow Agreement, (i) the reporting person is
         deemed to be the owner of the Earn-out Shares and (ii) while the
         Earn-out Shares are held by the Escrow Agent, the reporting person has
         the power to vote the Earn-out shares (with no action required to be
         taken by the Escrow Agent).

(2)      The sole general partner of Warburg, Pincus Ventures, L.P. ("WPV") is
         Warburg Pincus & Co., a New York general partnership ("WP"). Warburg
         Pincus LLC, a New York limited liability company ("WPLLC"), manages
         WPV.

(3)      The shares of Preferred Stock are convertible into Common Stock at the
         rate of 10 shares of Common Stock for each share of Preferred Stock, at
         a conversion price of $25 per share (subject to antidilution and
         certain other adjustments). In addition, the Preferred Stock accrues
         dividends on the original issue price of $25 per share at the rate of
         8% per annum. These dividends are payable upon conversion of the
         Preferred Stock into Common Stock in additional shares of Common Stock
         and/or, subject to certain conditions, in cash. The conversion reported
         hereby represents the conversion of 62,359.57 shares of Preferred Stock
         into 687,648 shares of Common Stock, including 64,053 shares of Common
         Stock representing accrued dividends. Although the conversion became
         effective on December 22, 2004, by agreement between the Company and
         the reporting person, the conversion ratio was calculated as of
         December 16, 2004 and the 64,053 shares of Common Stock paid as accrued
         dividends upon conversion represents an assumed conversion date of
         December 16, 2004. The remaining accrued dividends, for the period
         between December 16, 2004 and December 22, 2004, will be be paid to the
         reporting person in cash.

(4)      The shares of Preferred Stock are convertible into Common Stock
         immediately and have no expiration date.

EX-99

Exhibit 99.2
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Form 4 Joint Filer Information

Name:                      WARBURG PINCUS & CO.
Address:                   466 Lexington Ave., New York, NY  10017
Designated Filer:          Warburg, Pincus Ventures, L.P.
Issuer and Ticker Symbol:  I-trax, Inc. (DMX)
Date of Event Requiring
   Statement:              December 22, 2004
Signature:
                      WARBURG PINCUS & CO.



                       By: /s/ Scott A. Arenare
                           -------------------------
                           Name:  Scott A. Arenare
                           Title: Partner

Name:                      WARBURG PINCUS LLC
Address:                   466 Lexington Ave., New York, NY  10017
Designated Filer:          Warburg, Pincus Ventures, L.P.
Issuer and Ticker Symbol:  I-trax, Inc. (DMX)
Date of Event Requiring
   Statement:              December 22, 2004
Signature:
                      WARBURG PINCUS LLC



                       By: /s/ Scott A. Arenare
                           -------------------------
                           Name:  Scott A. Arenare
                           Title: Managing Director