OTech has access to several industry experts and consultants who are used to create a team to solve your training and consulting need. Our core OTech associates include the following professionals.

Herman OosterwijkHerman Oosterwijk
He functions as the EHR, PACS, DICOM, and IHE instructor as well as a consultant and overall project manager for most of the projects. He is very familiar with the PACS industry and technology because of his prior work experience as a PACS program and business unit manager with Philips, AT&T, and Kodak. He teaches and publishes extensively on PACS and related topics such as the Digital Imaging and Communications in Medicine (DICOM) standard. He participates with the DICOM, HL7 and IHE standardization efforts serving in various positions and working groups. View Resume

Johanna OosterwijkJohanna Oosterwijk
Business Manager
Johanna has a background in the healthcare field ranges from being a RN, working in anesthesiology, to practicing as a licensed hypnotherapist and teach about alternative medicine and energy work. For OTech, she handles accounts payable and receivables. She is also responsible for all seminar coordination, including registration and she maintains our corporate database. If you have any questions about our products our services, do not hesitate to contact her via phone or e-mail and she will be able to help you and/or refer you to the right person.

Carl T. AllettoCarl T. Alletto, M.S.
Regulatory Consultant
Carl is a Certified Professional Consultant, ASQC Certified Quality Manager, Certified Software Quality Engineer, and Certified Quality Auditor. He offers a broad range of experience and expertise in the development, implementation, and assessment of medical device regulations, software quality, verification/validation, ISO 9000 certification, and FDA Good Manufacturing Practices. With over 20 years experience in a Fortune 500 company as Director of Regulatory Affairs and Vice President of Quality, he understands PACS medical device regulations 510(k) guidelines, compliance, and quality standards that are critical to a your business. View Resume

Tim DeRouenTim DeRouen
IT Support
Tim is responsible for developing the back-end of our website.

Ted KleinTed Klein
HL7 Instructor

Brett MarquardBrett Marquard
Brett Marquard is an interoperability analyst specializing in the design and development of healthcare data exchanges. He is a co-chair of Health Level Seven's (HL7) Structured Document Working Group (SDWG) and Primary Editor of the HL7 Consolidated Templates Draft Standard. The Office of the National Coordinator (ONC) recently named the Consolidated Templates DSTU in Meaningful Use Stage 2. Brett is a liaison from the SDWG to the HL7 Claims Attachments Work Group. Brett trains new implementers, developers, and policy makers on the Clinical Document Architecture (CDA), and HL7 version 2.

Chris McCarthyChris McCarthy
IT Support
Chris is responsible for developing the front-end of our website.

Lisa NelsonLisa Nelson
Independent Consultant
Lisa Nelson is an independent medical informatics consultant with over 20 years of experience. She is an HL7 Certified CDA Specialist, and has extensive experience validating CDA R2 implementation specifications for the IHE's Quality, Research, Public Health domain and Patient Care Coordination domain. She participated in the CDA Consolidation project for the S&I Framework initiative. As an active member of HL7 and IHE, she contributes to the development of national standards for the use and exchange of digital health records and clinical quality measures.

John SoleJohn Sole, CIIP & CPAS
PACS Instructor

You can contact any of our associates through


CIIP Study Guide - $135
HL7 Study Guide - $119
PACS Clinical Package - $595
PACS IT Package - $595

Training Schedule

SEP 25-26
Comprehensive HL7 (V2)

SEP 27-29
Comprehensive DICOM Certification

OCT 2-3
Fundamentals of Clinical and IT (PARCA CPAS)

OCT 4-7
PACS System Administration

OCT 16
Module 1: DICOM Negotiation and Image Objects

OCT 17
Module 2: DICOM Communication Services and SR

Click here to view entire training schedule.

Tips & Tricks

Click here to view the latest video regarding the DICOM sniffer.

Stay Connected

View Our BlogVisit Us On FacebookKeep In Touch On Linked InSubscribe To Our RSS FeedFollow Us On TwitterSubscribe To Our YouTube ChannelHangout on Google+
© 2017 OTech, Inc. All rights reserved.