We Are Creative Structural Engineers

operating nationally in support of the entire building lifecycle:

Services


New Buildings

  • Structural Design
  • Condition Assessment
  • Parking / Functional Design
  • Seismic Evaluation
  • Feasibility Study
  • Peer Review

Existing Buildings

  • Adaptive Reuse
  • Additions
  • Vertical Expansion
  • Interior Renovation
  • Facility Assessment
  • Emergency Response

Facades & Garages

  • Philadelphia Facade Inspection Ordinance-Compliant Assessments
  • NYC DOB-Compliant Assessments
  • Condition Assessment
  • Repair / Restoration Design
  • Historic Preservation

Leadership


Anthony Naccarato, PE, SECB

President

Mark Lunden, PE, SECB

Vice President

Dennis Mordan, PE, SECB

Vice President

Paul Panzarino, PE

Vice President

Rod McComas, PE, SE

Vice President

Scott Bauer, PE, SE, SECB, LEED AP

Principal

James Behler, PE, SECB

Principal

Michael Herrmann, PE, SECB

Principal

Alan Miller, PE, SECB

Principal

Mark Orsini, PE, SE

Principal

Brian Rawlings, PE, SECB

Principal

Melissa Pastras-Brugler, MBA, PHR, SHRM-CP

Director of Finance

Jason Coleman, PE, CDT

Director of Restoration

Robert Franco, PE

Regional Director

Tom Miltner, PE

Regional Director

Tuna Yelkikanat, PE, LEED GA

Regional Director
Bill and Pete, 1988

Foundation

O&N’s predecessor Seymour Greenberg opened in Philadelphia in 1954 later welcoming Principals William O’Donnell and Peter Naccarato. In 1981 the firm adopted its current name and set a foundation for national growth. Today O&N’s Philly headquarters office is supported by two Mid-Atlantic branch offices, a Midwest office, and O’Donnell & Naccarato Structural Engineers, a Manhattan-based corporate affiliate founded by O&N Principals to serve projects in New York State.

Philadelphia, PA
701 Market Street,
Suite 6000,
Philadelphia, PA 19106
Mountainside, NJ
200 Central Avenue,
Suite 202,
Mountainside, NJ 07092

Locations

New York, NY
40 Worth Street,
Suite 301,
New York, NY 10013
Carmel, IN
1717 East 116th Street,
Suite 200,
Carmel, IN 46032