John Castle
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John Castle Email & Phone Number

Location: Snoqualmie, Washington, United States 10 work roles 6 schools
1 work email found @rohealth.com 1 phone found area 877 LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 1 phone

Work email j****@rohealth.com
Direct phone (877) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Director
Location
Snoqualmie, Washington, United States
Company size

Who is John Castle? Overview

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Quick answer

John Castle is listed as Director at Cadence Biomedical, a company with 3 employees, based in Snoqualmie, Washington, United States. AeroLeads shows a work email signal at rohealth.com, phone signal with area code 877, and a matched LinkedIn profile for John Castle.

John Castle previously worked as Director/Advisor at Ro Health and Director at Encompass. John Castle studied at Seattle University.

Company email context

Email format at Cadence Biomedical

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{first_initial}{last}@rohealth.com
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AeroLeads found 1 current-domain work email signal for John Castle. Compare company email patterns before reaching out.

Profile bio

About John Castle

John Castle teaches Entrepreneurship at Seattle University. He retired from teaching at the University of Washington Foster School of Business (2001- 2013) and the Bainbridge Graduate Institute (2006-2012). His practical classes inspired many former students to found innovative new companies in many industries. He founded and ran many companies during his fifty year business career, including several that went public or were acquired. He now advises companies on how to turn their ideas and technologies into profitable businesses and his innovative methods help businesses focus on the elements of the venture that are essential for success. He was co-founder and CEO of Cantametrix, a music software company, CEO of Hamilton-Thorn, a medical electronics and diagnostics company; Executive VP and co-founder of Seragen, a biotechnology company, and a partner in Washington Biotechnology Funding, a seed venture capital fund specializing in medical technologies. He has been a principal, director or advisor to early-stage companies including, Cadence Biomedical, RO Health, Stockbox Grocers, Energizing Solutions, Microgreen Polymers, Sharebuilder, Goodwell Technologies, Olympus Games, 3 Phase Energy, Savtech, Sunriver Specialties, and Biohesion, He is a member of the Keiretsu Forum which provides financing to early-stage companies. He has advised large companies including Danaher Corp, FMC Corp, Procter & Gamble, Penwest, Johnson Controls and Washington Dental Service. He is an expert witness about entrepreneurial ventures. He has been honored as an outstanding business professor and has spoken at numerous events for entrepreneurs. He has served on the boards of non-profits Encompass, MIT Enterprise Forum of the Northwest and the Northwest Entrepreneur Network. He is a graduate of MIT in Chemical Engineering, and the Harvard Graduate School of Business. Dr. Castle spends his free time in the outdoors, hiking, snowshoeing and playing golf with family and friends.Specialties: provides tactical guidance to companies entering a growth stage; focusing a business on what is important and timely; identify, create, finance and deliver what customers want to buy. Expert witness in business matters.

Listed skills include Entrepreneurship, Start Ups, Public Speaking, Program Evaluation, and 1 others.

Current workplace

John Castle's current company

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Cadence Biomedical
Cadence Biomedical
Director
Snoqualmie, WA, US
Employees
3
AeroLeads page
10 roles · 38 years

John Castle work experience

A career timeline built from the work history available for this profile.

Director/Advisor

Current
Ro Health
2013 - Present ~13 yrs 5 mos

Director

Current
Encompass
2007 - Present ~19 yrs 5 mos

Lecturer In Entrepreneurship

Expert in Business Formation and Planning

2008 - 2014 ~6 yrs

Lecturer In Entrepreneurship, Retired

John Castle taught Entrepreneurship at the Foster School of Business at the University of Washington, where his practical classes in company formation have spawned several new companies that are establishing a strong foothold in their markets.He also taught Business Planning for entrepreneurs at Seattle University, and several companies grew out of those.

Dec 2000 - Jun 2013

Member

Keiretsu Forum
2008 - 2013 ~5 yrs

Lecturer In Entrepreneurship

Greater Seattle Area

John Castle teaches Entrepreneurship at the Bainbridge Graduate Institute, where his practical classes in company formation have spawned several new companies that are establishing a strong foothold in their markets.

Jan 2006 - 2012

Member

Entrepreneur Community
1988 - 2010 ~22 yrs

Board Member

Nwen
2001 - 2009 ~8 yrs
6 education records

John Castle education

Education record

Bainbridge Graduate Institute
FAQ

Frequently asked questions about John Castle

Quick answers generated from the profile data available on this page.

What company does John Castle work for?

John Castle works for Cadence Biomedical.

What is John Castle's role at Cadence Biomedical?

John Castle is listed as Director at Cadence Biomedical.

What is John Castle's email address?

AeroLeads has found 1 work email signal at @rohealth.com for John Castle at Cadence Biomedical.

What is John Castle's phone number?

AeroLeads has found 1 phone signal(s) with area code 877 for John Castle at Cadence Biomedical.

Where is John Castle based?

John Castle is based in Snoqualmie, Washington, United States while working with Cadence Biomedical.

What companies has John Castle worked for?

John Castle has worked for Cadence Biomedical, Ro Health, Encompass, Seattle University, and Foster School Of Business, University Of Washington.

Who are John Castle's colleagues at Cadence Biomedical?

John Castle's colleagues at Cadence Biomedical include Jason Panzenbeck.

How can I contact John Castle?

You can use AeroLeads to view verified contact signals for John Castle at Cadence Biomedical, including work email, phone, and LinkedIn data when available.

What schools did John Castle attend?

John Castle studied at Seattle University.

What skills is John Castle known for?

John Castle is listed with skills including Entrepreneurship, Start Ups, Public Speaking, Program Evaluation, and Quantitative Analytics.

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