Physician Leadership
National Practice Board
Our National Practice Board (NPB) is an advisory team of physicians working jointly with executive leadership to advance clinical innovation and orthopedic excellence. Comprised of nine physician leaders from Spire’s partner practices, the NPB helps foster seamless collaboration across our organization, while providing specialty counsel to enhance patient care.
The NPB balances Spire’s commitment to physician autonomy with the opportunity for individual physicians to benefit from the shared expertise and holistic strength of our entire partner network. The mutual support between NPB members and the Spire executive team represents a progressive leadership model in the industry and establishes a legacy of organization-wide physician influence for years to come.
Clinical Governance Board Members
Our Clinical Governance Board model ensures physicians drive all clinical decisions, with each practice appointing physicians to a local board to represent needs unique to their practice.



- William Colman, M.D.
- Frank Lombardo, M.D.
- Vishal Rekhala, D.O.
- Sasha Ristic, M.D.
- Russell Tigges, M.D.
- Steven Alter, M.D.
- Atul Bhat, M.D.
- Mark Lapp, M.D.
- Jeremy M. Moses, M.D.
- Scott Sigman, M.D.
- David Fehnel, M.D.
- John Karbassi, M.D.
- Steven Mattheos, M.D.
- Jeremy Shore, M.D.
- Jonathan Uroskie, M.D.

- William Colman, M.D.
- Frank Lombardo, M.D.
- Vishal Rekhala, D.O.
- Sasha Ristic, M.D.
- Russell Tigges, M.D.

- Steven Alter, M.D.
- Atul Bhat, M.D.
- Mark Lapp, M.D.
- Jeremy M. Moses, M.D.
- Scott Sigman, M.D.

- David Fehnel, M.D.
- John Karbassi, M.D.
- Steven Mattheos, M.D.
- Jeremy Shore, M.D.
- Jonathan Uroskie, M.D.



- David Bomback, M.D.
- Matthew Cantlon, M.D.
- Demetris Delos, M.D.
- Seth Miller, M.D.
- Paul Sethi, M.D.
- Katherine Vadasdi, M.D.
- Adebola Adeleke, D.P.M., FACFAS
- Jeffrey Bash, M.D.
- David Hergan, M.D.
- Alfred Hicks, D.O.
- Terry Reardon, M.D.
- Joseph Sohn, M.D.
- James Walsh, M.D.
- Michael Angel, M.D.
- Kevin Cassidy, M.D.
- Richard D’Agostino, M.D.
- Jeffrey Richmond, M.D.
- Peter Stein, M.D.

- David Bomback, M.D.
- Matthew Cantlon, M.D.
- Demetris Delos, M.D.
- Seth Miller, M.D.
- Paul Sethi, M.D.
- Katherine Vadasdi, M.D.

- Adebola Adeleke, D.P.M., FACFAS
- Jeffrey Bash, M.D.
- David Hergan, M.D.
- Alfred Hicks, D.O.
- Terry Reardon, M.D.
- Joseph Sohn, M.D.
- James Walsh, M.D.

- Michael Angel, M.D.
- Kevin Cassidy, M.D.
- Richard D’Agostino, M.D.
- Jeffrey Richmond, M.D.
- Peter Stein, M.D.
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