Do i need a surgery based on my MRI report?

have been suffering low back pain for several years. Based on my MRI report, my doctor said I need a surgery, since Physical therapy or Chiropractor won't help. But i do want a second opinion before i go for a surgery. So could someone help me with it?   The following is from my MIR report:

MRI LUMBAR SPINE
HISTORY: 30 year old male, back pain X 5 years, after heavy lifting.

A non-contrast MRI scan of the lumbar spine was obtained. The L4-L5 level shows mild disc space narrowing, disc degeneration. In addition, there is a moderate extruded left central disc herniation with significant impingement of the left L5 nerve root in the lateral recess.

The L5-S1 level shows minimal disc space narrowing, and disc degeneration. A tiny left central disc herniation abutting the left L5 nerve root is seen. There may be minimal nerve root impingement.

The lumbar spine is otherwise, unremarkable.

IMPRESSION;

L4-L5 and L5-S1 minimal degenerative changes. The L4-L5 moderate extruded left central disc herniation with significant left L5 nerve root impingement. L5-S1 tiny left central disc herniation abutting the left S1 nerve root with possible minimal nerve root impingement.