Answer:
No error
Step-by-step explanation:
There are no errors in this sentence.
The abbreviation Dr. is written correctly, and it stands for Doctor.
Thomas James is a full name. It's written correctly as both the first and the last names are capitalized.
East Main Street is a street name. Street names are also capitalized, so this is written correctly.
All words are spelled correctly. There are no numbers in the given sentence, so there are no errors involving numbers, either.