13D Filing: James E. Flynn and Adeptus Health Inc. (ADPT)

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SIGNATURE

After reasonable inquiry
and to the best of their knowledge and belief, the undersigned certify that the information set forth in this statement is true,
complete and correct.


Dated: May 12, 2017

DEERFIELD MGMT, L.P.

By: J.E. Flynn Capital, LLC, General Partner

By:
/s/ Jonathan Isler

Name:
Jonathan Isler

Title: Attorney-in-Fact

DEERFIELD PARTNERS, L.P.

By:
Deerfield Mgmt, L.P., General Partner

By: J.E. Flynn Capital, LLC, General Partner

By:
/s/ Jonathan Isler

Name:
Jonathan Isler

Title: Attorney-in-Fact

DEERFIELD INTERNATIONAL MASTER FUND, L.P.

By:
Deerfield Mgmt, L.P., General Partner

By: J.E. Flynn Capital, LLC, General Partner

By:
/s/ Jonathan Isler

Name:
Jonathan Isler

Title: Attorney-in-Fact

DEERFIELD MANAGEMENT COMPANY, L.P.

By: Flynn Management LLC, General Partner

By:
/s/ Jonathan Isler

Name:
Jonathan Isler

Title: Attorney-in-Fact

JAMES E. FLYNN

/s/
Jonathan Isler

Jonathan
Isler, Attorney-in-Fact

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