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Jeff Vreeman

Vice president of manufacturing at Medical 21

Executive
Updated Nov 7, 2026·Latest SEC filing Oct 23, 2026·Suggest an edit

About Jeff Vreeman

Jeff Vreeman is vice president of manufacturing at Medical 21, a medical device company focused on coronary artery bypass surgery patients. He has held that role since June 2025. He had been director of manufacturing there since 2018.

He has worked with founder and chief executive officer Manny Villafaña for 15 years. Earlier, he was a senior engineer and operations manager, and a senior research and development engineer, at MIVI Neuroscience, Inc. His background spans manufacturing, operations, process development, research and development, and quality, including nitinol support systems. He holds a bachelor's degree in mechanical engineering from the University of North Dakota.

Experience

This experience comes from official bios and from SEC filings. For roles taken from filings, the years are when the filings name Jeff Vreeman in the role, so the role may have started earlier or lasted longer.

Medical 21, Inc. Current
Vice President, Manufacturing
Vice President of Manufacturing (2025 – Present)
Director of Manufacturing (2018 – 2025)
2018 – Present · Plymouth, MN
Medical 21 is developing a regenerative graft meant to replace harvested veins in coronary artery bypass surgery.
MIVI Neuroscience, Inc.
Senior Engineer/ Operations Manager and Senior R&D Engineer

Key Colleagues at Startups

The people Jeff Vreeman works with at each company, as listed on that company's latest Form D.

Medical 21, Inc. · Form D, Oct 23, 2026
Manny Villafana
Manny Villafana
Founder & CEO, director
ES
Eric Solien
Vice President, Clinical Sciences
AS
Andrea Sweeney
Vice President, Business Administration

Sources

  1. SECMedical 21, Inc. Form D, filed Oct 23, 2026
  2. companyMedical 21 leadership team page
  3. secMedical 21, Inc. S-1/A, March 12, 2026