The above link takes you to the image file wrapper for Application No. 11/006,891 Electrical devices and anti-scarring agents.
The "Claims" indicate a total of 13,305 claims.
The "Pre-Exam Formalities Notice" indicates a $999,600 fee for 9,996 independent claims over 3, and a $249,475 fee for 9,979 total claims over 20. (Apparently, either the PTO system is unable to process more than 9,999 claims, or the PTO stops charging for claims greater than 9,999.)
The "Transmittal letter" indicates the specification (including claims) was 1,895 pages in length.
A subsequent amendment appears to get the number of claims to below 100.
Hat tip: Now, Why Didn't I Think of That?.