| Bijunath R. Patla | Time Realization and Distribution Group | bijunath.patla [at] nist.gov | Fed |  | 
          
                                                                                        | Heather J. Patrick | Surface and Interface Metrology Group | heather.patrick [at] nist.gov | Fed | Optical / photometry / laser metrology, Optical physics and communications, Calibration services | 
          
                                                                                        | Paul Patrone | Mathematical Analysis and Modeling Group | paul.patrone [at] nist.gov | Fed |  | 
          
                                                                                        | Milinda Pattanayak | Quantum Nanophotonics Group | milinda.pattanayak [at] nist.gov | IntlAssoc |  | 
          
                                                                                        | Travis Patterson | Operations Engineering Group |  | Ctr |  | 
          
                                                                                        | Michael Patton | Facilities Improvement (Gaithersburg) Group |  | Ctr |  | 
          
                                                                                        | Paul Cameron | Security Systems and Access Control Group | cameron.paul [at] nist.gov | Assoc |  | 
          
                                                                                        | Chandan Paul | Engineered Fire Safety Group | chandan.paul [at] nist.gov | IntlAssoc | Fire, Fire modeling, Radiation, Thermodynamics | 
          
                                                                                        | Rick L. Paul | Chemical Process and Nuclear Measurements Group | rick.paul [at] nist.gov | Fed |  | 
          
                                                                                        | James Paul | Logistics Group |  | Ctr |  | 
          
                                                                                        | Ratul Paul |  |  | IntlAssoc |  | 
          
                                                                                        | Eugene Paulechka | Thermodynamics Research Center Group | yauheni.paulechka [at] nist.gov | Fed | Chemical thermodynamics and chemical properties, Theoretical chemistry and modeling, Thermochemical properties | 
          
                                                                                        | Celia Paulsen | Strategy, Technology & Policy – HQ | celia.paulsen [at] chips.gov | Fed |  | 
          
                                                                                        | Marvin Pavatea |  | marvin.pavatea [at] nist.gov | Fed |  | 
          
                                                                                        | Georges Pavlidis | Nanoscale Spectroscopy Group | georges.pavlidis [at] nist.gov | Assoc |  | 
          
                                                                                        | Ryan Paxson | Neutron-Condensed Matter Science Group |  | Assoc |  | 
          
                                                                                        | Michael Payne | Logistics Group |  | Ctr |  | 
          
                                                                                        | Charles Payne |  |  | Ctr |  | 
          
                                                                                        | William Vance Payne II | HVAC&R Equipment Performance Group | vance.payne [at] nist.gov | Fed | Energy efficiency, Heating, ventilation and air conditioning equipment, Internet of Things (IoT) | 
          
                                                                                        | Sharrano Payne | Operations Engineering Group |  | Ctr |  | 
          
                                                                                        | Beverly Payne | Mass and Force Group | beverly.payne [at] nist.gov | Ctr |  | 
          
                                                                                        | Zachary Payne | Operations Engineering Group |  | Ctr |  | 
          
                                                                                        | Ural Payton | HVAC&R Equipment Performance Group |  | Ctr |  | 
          
                                                                                        | Leda Paz Murillo | Operations Engineering Group |  | Ctr |  | 
          
                                                                                        | Ileana Pazos | Dosimetry Group | ileana.pazos [at] nist.gov | Fed |  | 
          
                                                                                        | Adam J. Pearce | Radioactivity Group | adam.pearce [at] nist.gov | Fed | Analytical chemistry, Materials characterization, Ionizing radiation metrology, Spectroscopy | 
          
                                                                                        | Fred Pearrell | Operations and Maintenance (Gaithersburg) Group | amos.pearrell [at] nist.gov | Fed |  | 
          
                                                                                        | Alonzo Pearson | Operations and Maintenance (Gaithersburg) Group | alonzo.pearson [at] nist.gov | Fed |  | 
          
                                                                                        | Michael Pease | Networked Control Systems Group | michael.pease [at] nist.gov | Fed | Information technology, Manufacturing, Resilience, Standards, Technology transfer | 
          
                                                                                        | Melissa Peckhaus | Capital Asset Management and Facilities Planning Group |  | Ctr |  | 
          
                                                                                        | Christian Pederson |  | christian.pederson [at] nist.gov | Assoc |  | 
          
                                                                                        | John Pedrick | Building Management (Gaithersburg) Group |  | Ctr |  | 
          
                                                                                        | Malcolm Peeples | Emergency Services - HQ | malcolm.peeples [at] nist.gov | Fed |  | 
          
                                                                                        | Bret Peifer | Facilities Modernization (Boulder) Group |  | Ctr |  | 
          
                                                                                        | Hunter Peifer | Facilities Modernization (Boulder) Group |  | Ctr |  | 
          
                                                                                        | John Pellerin | Operations Office – HQ | john.pellerin [at] chips.gov | Fed |  | 
          
                                                                                        | Chris Peloquin | National Cybersecurity Center of Excellence | christopher.peloquin [at] nist.gov | Ctr |  | 
          
                                                                                        | Matthew Pelton |  | matthew.pelton [at] nist.gov | Assoc |  | 
          
                                                                                        | Eric Peluso | Networking Group |  | Ctr |  | 
          
                                                                                        | Bradley Pelz | Sources and Detectors Group | bradley.pelz [at] nist.gov | Fed |  | 
          
                                                                                        | Michael Pember | Emergency Services - HQ | michael.pember [at] nist.gov | Fed |  | 
          
                                                                                        | Amnahir Pena-Alcantara | Director's Office - HQ | amnahir.pena-alcantara [at] nist.gov | Fed |  | 
          
                                                                                        | John Penczek | Software and Systems - HQ | john.penczek [at] nist.gov | Assoc |  | 
          
                                                                                        | Shiquan Peng | Reactor Operations and Engineering Group | shiquan.peng [at] nist.gov | Ctr |  | 
          
                                                                                        | Rixi Peng | Shared Spectrum Metrology Group | rixi.peng [at] nist.gov | IntlAssoc |  | 
          
                                                                                        | Tadas Penkauskas | Biophysical and Biomedical Measurement Group | tadas.penkauskas [at] nist.gov | IntlAssoc |  | 
          
                                                                                        | Bryce Penn | Networking Group |  | Ctr |  | 
          
                                                                                        | Kara Penny | CHIPS Research & Development Program Headquarters – HQ | kara.penny [at] chips.gov | Fed |  | 
          
                                                                                        | Jeffrey Pepple | Agreements Group | jeffrey.pepple [at] nist.gov | Fed |  | 
          
                                                                                        | Benjamin Pera | Time Realization and Distribution Group | benjamin.pera [at] nist.gov | Fed |  |