HealthPartners has proposed a new neuroscience center for St. Paul, expanding its footprint on the city’s east side.

While the Bloomington-based health care organization declined to offer specifics, documents submitted to the city indicate the project will include a four-story office building and a four-level, 680-space parking ramp.

HealthPartners is exploring whether to locate the center at 295 Phalen Boulevard, close to existing specialty centers in the area.

The office space would span 128,000 square feet. Annelise Searle, a HealthPartners spokeswoman, said the new center would “bring together our nationally recognized programs for stroke, spine care, neurological tumors, dementia, Parkinson’s disease and other neurological disorders.”

She said the project was still in the “planning stages.”

HealthPartners representatives met with city staff earlier this month regarding the project, but no timeline for construction has been set.