Kohei Yamamoto

Immigration Lawyer at Cowan Miller & Lederman

  • Recent Case: 415
  • Success Rate: 100%

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Contact Information


  • 206-923-8631
  • kyamamoto@cmlseattle.com
  • 1000 2nd Avenue Suite 1620, Seattle , WA 98104

About Kohei Yamamoto


Kohei Yamamoto, who is licensed to practice at Washington State Supreme Court, WA, Supreme Court, WA, is an immigraton attorney at Cowan Miller & Lederman. During the past three years, Kohei Yamamoto has filed 371 labor condition applications for H-1B visas, all have been approved , and 44 labor petitions for employment based green cards, all have been certified(approved). The overall case success rate is 100%.

Statistics of Labor Petitions for H-1B Visa & Employment Based Green Card(PERM)


LCA For H-1B Visa
  • Applications Filed: 371
  • Case Denied: 0
LC for Green Card(PERM)
  • Applications Filed: 44
  • Cased Denied: 0

Labor Petitions (LC) for Green Card (PERM) Applications


Kohei Yamamoto has assisted clients in filing labor petitions for Green Card (PERM) applications. Below are key statistics:

Top Beneficiary Visas

H-1B, F-1, TN

Top Job Titles

Senior Statistical Programmer, Principal Statistical Programmer, Senior Software Engineer, Sr. Biostatistician Ii, Statistical Programmer Ii, Research Associate Iii, Scientist, Pharmaceutical Sciences, Impurity Assays Group, Software Development Engineer, Senior Software Developer, Senior Data Analyst

Top O*NET Titles

Statisticians, Software Developers, Applications, Multimedia Artists and Animators, Software Developers, Biological Technicians, Biostatisticians, Regulatory Affairs Specialists, Health and Safety Engineers, Except Mining Safety Engineers and Inspectors, Natural Sciences Managers, Biochemists and Biophysicists

Top Locations

Bothell, WA, Bellevue, WA, Seattle, WA, Portland, OR, New York, NY, Seatac, WA

Labor Condition Applications(LCA) for H-1B Visa


Kohei Yamamoto has filed labor condition applications for H-1B visas for a wide variety of positions and locations. Below are the top statistics:

Top Beneficiary Visas

H-1B, E-3 Australian, H-1B1 Singapore

Top Job Titles

Scientist Ii, Scientist I, Senior Statistical Programmer, Software Development Engineer, Senior Software Engineer , Principal Statistical Programmer, Financial Reporting Analyst, Software Engineer Ii, Senior Scientist , Principal Biostatistician

Top O*NET Titles

Biochemists and Biophysicists, Statisticians, Computer Systems Engineers/Architects, Software Developers, Software Developers, Applications, Computer Systems Analysts, Validation Engineers, Regulatory Affairs Specialists, Biostatisticians, Data Scientists

Top Locations

Bothell, WA, Seattle, WA, Seatac, WA, Portland, OR, Fremont, CA, Bellevue, WA, South San Francisco, CA, Watertown, MA, Redmond, WA, Kirkland, WA

Practice Areas


  • Student and Exchange Visas: Supports F-1 and J-1 visa applicants.
  • Employment Visas: Assists businesses and individuals with work visa applications, including H-1B, L-1, O-1, and E-2 visas.
  • Deportation Defense: Represents clients in removal proceedings and assists with applications for relief such as asylum, cancellation of removal, or adjustment of status.
  • Temporary Protected Status (TPS): Assists individuals from designated countries.

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