HSS Expands Upper East Side Campus with $195M Kellen Tower

Event summary

  • HSS opened Kellen Tower, a 94,000-square-foot, 12-story facility, on March 30, 2026.
  • The $195M project was funded by philanthropic contributions, including a $35M lead gift from the Anna-Maria and Stephen Kellen Foundation.
  • Kellen Tower expands HSS’s capacity for specialized orthopedic care, including joint replacement and spine surgery.
  • The tower connects to the main hospital and HSS Pavilion via sky bridges, integrating inpatient, outpatient, and recovery services.
  • HSS is also funding improvements to the East River Esplanade as part of the project.

The big picture

HSS’s expansion reflects the growing demand for specialized orthopedic care, particularly for complex conditions. The project aligns with broader trends in healthcare infrastructure investment, where academic medical centers are expanding to meet both domestic and international patient needs. The philanthropic funding model also highlights the role of private donations in supporting large-scale healthcare facility developments.

What we're watching

Capacity Utilization
How quickly HSS fills the new capacity in Kellen Tower and whether it meets demand for complex musculoskeletal care.
Philanthropic Momentum
Whether the successful fundraising for Kellen Tower translates into continued support for HSS’s expansion plans.
Operational Integration
The pace at which HSS integrates Kellen Tower into its existing campus operations and improves patient flow.