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John Holthaus Email & Phone Number

Executive Director - Enterprise Applications at City of Hope

Location: Trabuco Canyon, California, United States 1 work role

1 work email found @cityofhope.org 2 phones found area 949 LinkedIn matched

✓ Verified Jun 2026 4 data sources Profile completeness 71%

Current company

City of Hope

Role

Executive Director - Enterprise Applications

Location

Trabuco Canyon, California, United States

Company size

11890 employees

Who is John Holthaus? Overview

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Quick answer

John Holthaus is listed as Executive Director - Enterprise Applications at City of Hope, a company with 11890 employees, based in Trabuco Canyon, California, United States. AeroLeads shows a work email signal at cityofhope.org, phone signal with area code 949, and a matched LinkedIn profile for John Holthaus.

Company email context

Email format at City of Hope

This section adds company-level context without repeating John Holthaus's masked contact details.

{first}{last}@cityofhope.org

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AeroLeads found 1 current-domain work email signal for John Holthaus. Compare company email patterns before reaching out.

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Profile bio

About John Holthaus

John Holthaus is a Executive Director - Enterprise Applications at City of Hope. Colleagues describe him as "I had the pleasure of working with John for several years at ACC Capital Holdings. As manager of PeopleSoft Financials technical support team, John contains that unique blend of an individual with having a solid breadth of technical knowledge along with possessing superb people skills. Necessary aptitude for any project manager is the ability to fully understand the unspoken nuances of customer requirements along with the ability to negotiate what can be realistically expected; John has… Show more" and "John is a very detail oriented / hands on Director. I had a great time working with John while solving many of the complex IT solutions at Ameriquest. John is very honest, hard working and always eager to get the task at hand accomplished in the best manner possible. John is up on all of the latest technologies while still having great business acumen. John is one of those rare IT breeds who understand the business and technology. John has great project management expertise along with… Show more"

Current workplace

John Holthaus's current company

Company context helps verify the profile and gives searchers a useful next step.

City Of Hope

Executive Director - Enterprise Applications

Trabuco Canyon, CA, US

Website

cityofhope.org

Employees

11890

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Company profile

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1 role

John Holthaus work experience

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

Executive Director - Enterprise Applications

City Of Hope

Trabuco Canyon, Ca, Us

Team & coworkers

Colleagues at City of Hope

Other employees you can reach at cityofhope.org. View company contacts for 11890 employees →

SP

Sumanth Putta Colleague at City Of HopeAzusa, California, United States, United States View → PM

Paul Menzel Colleague at City Of HopeLos Angeles, California, United States, United States View → LV

Lisa Villarreal Colleague at City Of HopeWest Covina, California, United States, United States View → JH

Jeremy Harris Colleague at City Of HopeMetropolitan Fresno, United States View → MT

Muhammad Talha Waheed Colleague at City Of HopeDuarte, California, United States, United States View → DG

Danielle Guardado Colleague at City Of HopeLos Angeles Metropolitan Area, United States View → MK

Melton Kathy Colleague at City Of HopeSouth El Monte, California, United States, United States View → RL

Robert Lingeman Colleague at City Of HopeMonrovia, California, United States, United States View → GN

Gervais Noelle Colleague at City Of HopeLos Angeles, California, United States, United States View → IN

Indu Nair Colleague at City Of HopeDuarte, California, United States, United States View →

FAQ

Frequently asked questions about John Holthaus

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

What company does John Holthaus work for?

John Holthaus works for City of Hope.

What is John Holthaus's role at City of Hope?

John Holthaus is listed as Executive Director - Enterprise Applications at City of Hope.

What is John Holthaus's email address?

AeroLeads has found 1 work email signal at @cityofhope.org for John Holthaus at City of Hope.

What is John Holthaus's phone number?

AeroLeads has found 2 phone signal(s) with area code 949 for John Holthaus at City of Hope.

Where is John Holthaus based?

John Holthaus is based in Trabuco Canyon, California, United States while working with City of Hope.

What companies has John Holthaus worked for?

John Holthaus has worked for City Of Hope.

Who are John Holthaus's colleagues at City of Hope?

John Holthaus's colleagues at City of Hope include Sumanth Putta, Paul Menzel, Lisa Villarreal, Jeremy Harris, and Muhammad Talha Waheed.

How can I contact John Holthaus?

You can use AeroLeads to view verified contact signals for John Holthaus at City of Hope, including work email, phone, and LinkedIn data when available.

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