RESTRICTED STOCK AGREEMENT

Exhibit 10.23

RESTRICTED STOCK AGREEMENT

This Restricted Stock Agreement (“Agreement”) is made and entered into as of the 7^th day of March, 2007, by and among MCP-MSC Acquisition, Inc., a Delaware corporation (the “Company”), and Joseph P. Delaney (“Stockholder”).

WHEREAS, the Company desires to issue to the Stockholder 250,000 shares (the “Restricted Shares”) of the common stock in the Company, $0.001 par value per share (“Common Stock”), subject to the terms and conditions set forth herein;

NOW, THEREFORE, the Stockholder and the Company agree as follows:

1. Acquisition of Restricted Shares. The Stockholder hereby purchases from the Company, and the Company hereby sells to the Stockholder, the Restricted Shares at a purchase price of $0.001 per share (the “Original Purchase Price”). The Restricted Shares and any shares of capital stock of the Company acquired by the Stockholder as a result of any subdivision, combination or reclassification of Restricted Shares into a greater or smaller number of shares, recapitalization, reorganization, stock split, stock dividend or similar event (each a “Recapitalization Event”), are referred to herein as the “Shares” and such Shares are subject to the terms and conditions of this Agreement.

2. Representations and Warranties. The Stockholder represents, warrants and covenants as follows:

2.1. The Stockholder has full legal capacity, power, and authority to execute and deliver this Agreement and the Stockholders’ Agreement dated as of March 31, 2005, as from time to time in effect, among the Issuer, Monitor Clipper Equity Partners II, L.P., Monitor Clipper Equity Partners II (NQP), L.P. and the other parties thereto (the “Stockholders’ Agreement”) and to perform the Stockholder’s obligations hereunder and thereunder. This Agreement and the Stockholders’ Agreement has been duly executed and delivered by the Stockholder and are the legal, valid, and binding obligations of the Stockholder enforceable against the Stockholder in accordance with the terms hereof and thereof.

2.2. The execution, delivery, and performance by the Stockholder of this Agreement and the Stockholders’ Agreement and the consummation by the Stockholder of the transactions contemplated hereby and thereby will not, with or without the giving of notice or lapse of time, or both (i) violate any provision of law, statute, rule or regulation to which the Stockholder is subject, (ii) violate any order, judgment or decree applicable to the Stockholder, or (iii) conflict with, or result in a breach of default under, any term or condition of any agreement or other instrument to which the Stockholder is a party or by which the Stockholder is bound.

2.3. Except as provided by this Agreement and the Stockholders’ Agreement, the Stockholder is not a party to or subject to any agreement or arrangement with respect to the voting or transfer of the Shares.

2.4. The Stockholder has thoroughly reviewed this Agreement and the Stockholders’ Agreement in their entirety. The Stockholder has had an opportunity to obtain the advice of

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counsel (other than counsel to the Company or its affiliates) prior to executing this Agreement, and fully understands all provisions of this Agreement and the Stockholders’ Agreement.

2.5. The Stockholder is acquiring the Shares solely for the Stockholder’s own account for investment and not with a view to or for sale in connection with any distribution of the Shares or any portion thereof and not with any present intention of selling, offering to sell or otherwise disposing of or distributing the Shares or any portion thereof in any transaction other than a transaction exempt from registration under the Securities Act of 1933, as amended (the “Securities Act”). The Stockholder further represents that the entire legal and beneficial interest of the Shares is being acquired, and will be held, for the account of the Stockholder only and neither in whole nor in part for any other person.

2.6. The Stockholder was not presented with or solicited by any form of general solicitation or general advertising, including, but not limited to, any advertisement, article, notice, or other communication published in any newspaper, magazine, or similar media, or broadcast over television, radio or similar communications media, or presented at any seminar or meeting whose attendees have been invited by any general solicitation or general advertising.

2.7. The Stockholder’s principal residence is located at the address indicated in Exhibit A hereto.

2.8. The Stockholder is aware of the Company’s business affairs and financial condition and has acquired sufficient information about the Company to reach an informed and knowledgeable decision to acquire the Shares. The Stockholder further represents and warrants that the Stockholder has discussed the Company and its plans, operations and financial condition with its officers, has received all such information as the Stockholder deems necessary and appropriate to enable the Stockholder to evaluate the financial risk inherent in acquiring the Shares and has received satisfactory and complete information concerning the business and financial condition of the Company in response to all inquiries in respect thereof.

2.9. The Stockholder has either (i) a preexisting personal or business relationship with the Company or any of its officers, directors, or controlling persons, consisting of personal or business contacts of a nature and duration to enable the Stockholder to be aware of the character, business acumen and general business and financial circumstances of the person with whom such relationship exists, or (ii) such knowledge and experience in financial and business matters as to make the Stockholder capable of evaluating the merits and risks of an investment in the Shares and to protect the Stockholder’s own interests in the transaction, or (iii) both such relationship and such knowledge and experience.

2.10. The Stockholder can afford the complete loss of the value of the Shares and is able to bear the economic risk of holding such Shares for an indefinite period.

2.11. The Stockholder understands that (x) the Shares have not been registered under the Securities Act and are “restricted securities” within the meaning of Rule 144 under the Securities Act, (y) the Shares cannot be sold, transferred or otherwise disposed of unless they are subsequently registered under the Securities Act or an exemption from registration is then available and (z) in any event, the exemption from registration under Rule 144 will not be

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available unless a public market then exists for the Common Stock, adequate information concerning the Company is then available to the public, and other terms and conditions of Rule 144 are complied with.

2.12. The Stockholder has executed and delivered to the Company a joinder to the Stockholders’ Agreement pursuant to which Stockholder became a party to the Stockholders’ Agreement as an “Other Investor” (as such term is used in the Stockholders’ Agreement). The Stockholder understands and agrees that all of the Shares shall be subject to the Stockholders’ Agreement as “Other Investor Shares” (as such term is used in the Stockholders’ Agreement), it being understood for the avoidance of doubt that all shares of Common Stock of the Company acquired by the Stockholder pursuant to any exercise under a stock option plan or agreement to which he may be a party shall be subject to the Stockholders’ Agreement as “Manager Shares” (as such term is used in the Stockholders’ Agreement).

2.13. Subject to the obligations of the Company to Executive pursuant to the provisions of Sections 4(c) of the Employment Agreement, the Stockholder agrees to pay to the Company from time to time any applicable withholding and employment taxes that will be owed as a result of Stockholder’s receipt of the Shares and the vesting thereof.

2.14. Stockholder has had the opportunity to consult with his own tax advisor regarding the tax consequences of entering into this Agreement.

3. Repurchase Rights.

3.1 If the Stockholder’s employment with the Company or any of its subsidiaries (collectively, “MSC”) is terminated by MSC or by the Stockholder voluntarily for any reason, or no reason, with or without “Cause” or “Good Reason” (as each such term is used in the that certain Amended and Restated Employment Agreement dated as of the date hereof between MSC-Medical Services Company (“MSC”) and Stockholder (the “Employment Agreement”)), the Company (or, at the Company’s election, any parent or subsidiary of the Company) shall have the right to purchase (“Repurchase Right”), and the Stockholder shall, at the election of the Company, be obligated to sell all or any part of the Unvested Shares (as such term is defined below) owned by him at the time of termination, and, if the Stockholder’s employment with MSC is terminated by MSC for Cause or the Stockholder’s violation of any of Sections 10, 11 or 12 of the Employment Agreement, all or any part of the Vested Shares (as such term is defined below), in each case at the purchase price and on the terms provided in Section 3.2.

3.2 The Company may exercise its Repurchase Right by giving written notice to the Stockholder (or his legal representatives) at any time within 60 days following the termination of his employment with MSC, specifying the number of Vested Shares and Unvested Shares (as applicable) it wishes to purchase. The purchase price per Vested Share and Unvested Share shall be its Original Purchase Price (subject to equitable adjustment upon the occurrence of any Recapitalization Event).

3.3 Within thirty (30) days after receipt of the notice of the exercise of any Repurchase Right described in this Agreement, the Stockholder (or his legal representatives) shall deliver to the Company the certificate(s), together with duly executed stock powers,

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representing the Vested Shares and Unvested Shares being repurchased by the Company, against payment to the Stockholder (or his legal representatives), in the manner provided in Section 5, for the aggregate purchase price for such Vested Shares and Unvested Shares. Upon the date of such notice from the Company to the Stockholder (or his legal representatives), the interest of the Stockholder (and of his legal representatives) in the Vested Shares and Unvested Shares specified in such notice shall automatically terminate, except for the right to receive payment from the Company for such Vested Shares and Unvested Shares.

4 Vesting and Release of Shares from Repurchase Rights.

For purposes of this Agreement, a “Change in Control shall be defined as:

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Notwithstanding the foregoing, a Change of Control shall be deemed not to have occurred if, following any transaction or series of transactions, whether or not described above,, (i) MCP continues to hold an equity interest in a line of business of MSC (whether through MSC or another Person), (ii) MCP and its affiliates have the direct or indirect power to elect a majority of the members of the Board (or similar governing body) of MSC (or such other person), (iii) MCP and its affiliates own beneficially (as such term is used in Section 13(d) of the Exchange Act) at least 33 1/3% of the fully-diluted shares of the capital stock of MSC (or equity interests in such other person) and (iv) Stockholder continues to serve as President and Chief Executive Officer or is requested to serve as such on the terms and conditions contained in the Employment Agreement.

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“The shares represented by this certificate are subject to restrictions on transfer and may not be sold, exchanged, transferred, pledged, hypothecated or otherwise disposed of except in accordance with and subject to all the terms and conditions of a certain Restricted Stock Purchase Agreement, as amended, a copy of which the Company will furnish to the holder of this certificate upon request and without charge.”

Subject to the Repurchase Rights pertaining to Vested Shares in Section 3 above, from and following the date that any Share becomes a Vested Share, the Stockholder may, at his option or election, deliver to the Escrow Agent and the Company a direction to release any such Vested Share(s) from the escrow arrangement of Section 7 hereof and remove the Restricted Stock Legend from the certificate or certificates evidencing such Vested Share(s). Promptly thereafter, the Escrow Agent and Company shall undertake such actions as are necessary to deliver to the Stockholder a certificate or certificates, with the Restricted Stock Legend removed, representing such Vested Shares, including such actions as delivering appropriate replacement certificates registered in the Stockholder’s name (a) to the Stockholder directly in the case of Vested Shares, with the Restricted Stock Legend removed and (b) to the Escrow Agent in the case of any remaining Unvested Shares, with the Restricted Stock Legend in place. All costs and expenses incurred in connection with removal of the Restricted Stock Legend shall be borne by the Company.

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If to the Company:

c/o Monitor Clipper Partners, LLC

Two Canal Park, Fourth Floor

Cambridge, MA 02141

Attn: Adam Doctoroff

Fax: (617)  ###-###-####

with a copy to:

Ropes & Gray LLP

One International Place

Boston, MA 02110-2624

Attn: Winthrop G. Minot

Fax: (617) 951-7050

If to the Stockholder:

Joseph P. Delaney

700 Tranquility Cove

St. Augustine, Florida 32095

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IN WITNESS WHEREOF, this Agreement has been executed as an instrument under seal as of the date and year first above written.

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EXHIBIT A

[Stock Power Separate from Certificate]

FOR VALUE RECEIVED,                                  hereby sells, assigns and transfers unto MCP-MSC Acquisition, Inc.          shares of the common stock, par value $0.001 per share, of MCP-MSC Acquisition, Inc. (the “Corporation”) represented by Certificate No.         , and does hereby irrevocably constitute and appoint                                  as its attorney to transfer the said stock on the books of the Corporation with full power of substitution.