Mm logomark blue


Truly Personalized Respiratory Devices via 3D Scanning & Printing

  • Stage Product In Development
  • Industry Medical Devices and Equipment
  • Location Los Angeles, CA, US
  • Currency USD
  • Founded April 2013
  • Employees 10
  • Incorporation Type Not Incorporated
  • Website

Company Summary

Metamason is a healthcare-focused 3D scanning and 3D printing company. Our proprietary Scan·Fit·Print™ process uses 3D body scanning, patented algorithmic design, and on-demand 3D printing to create individually customized, ergonomic medical products. Our flagship product, Miia™, is a custom fit, 3D-printed CPAP mask designed to revolutionize treatment for Obstructive Sleep Apnea.


  • Photo
    Founder & CEO

    Leslie Oliver Karpas is passionate about revolutionizing the world of design through 3D technology. His career has combined elements of architecture, robotics, holography, and industrial design; today, he leverages 10 years of experience with 3D printers, manufacturing engineering and the use of parametric algorithms to build systems that redefine the relationship between products and consumers.

  • 8bafa412 76e0 4ee2 a71e 4b2d52e5890f
    Board Member

    Joel is the creative director for the Los Angeles branch of Product Development Technologies. He has a JD from Harvard and an MS in Industrial Design from Pratt Institute.

  • Default avatar
    Ryan Oenning
    Co-Founder & Chief Design Officer

    Ryan excelled at product design at prestigious Art Center College of Design in Pasadena, CA. Subsequently, he honed his expertise at digital design and fabrication at MachineHistories, an LA-based digital fabrication studio for companies such as Audi, celebrated artists such as Charles Ray, and notable architecture firms like Cloud 9 and Binishells. His work has been showcased at prominent design exhibitions including Dwell on Design and ICFF.

  • 598bcff1 291c 4d5e 8f3d 77660aa94d25
    Co-Founder & Director of Operations

    Charles Bohlen joined Metamason in 2014. A Los Angeles native, he graduated in 2012 from Washington University in St. Louis, where he earned a B.A. in Philosophy, Neuroscience, and Psychology. Previously, Charles pursued work with non-government organizations in Madagascar, New Orleans, Thailand and Cambodia.

  • Default avatar
    Kate Croft
    Content Strategist


  • Default avatar
    Marcus Filipovich
    Medical Adviser; former Director of Field Marketing, Medtronic
    Default avatar
    Roger Ball
    Ergonomics Adviser; Professor of Asian Ergonomics Hong Kong Polytechnic
    Default avatar
    Bakari Brock
    Legal/Business Adviser; Director of Business Development for Lyft, former Director of Product and Business Counsel for Twitter
  • Default avatar
    Richard Holbrook
    Design Adviser
    271ed64a bd16 4542 a3ba f87baad7557c
    Additive Manufacturing Adviser

Previous Investors

  • Default avatar
    Kenny Kam
    Default avatar
    Pat Holmes
    Default avatar
    The Design Accelerator
  • De8730a7 ba89 4480 b8bd 33520696f98b
    Ef4bbfaf 20a2 4eb3 9f68 7d93788714e7