Realtor listed as "tax payer" on county info for one his listings

[Natalie Kolodij]

I came across a property that I'm interested in 

it's priced pretty high, been on market for 280 days...

I pull up the information on the assessors website...

Taxpayer : 100% "Name of listing agent" address: "address of listing agent's office" 

Owner: 100% "Nice old lady" address: " Last name of listing agent, and a address that is a property listing agent owns, not the office" 

Taxes are also behind by $7,500...no payments since mid 2015. 

No title transfer/history as far back as the record shows. 

Would there be a reason for a realtor to be listed as the taxpayer for  a property he is selling, and then for the taxes to also be behind?I'm trying to figure out how to proceed. 

Thanks!