Central Sterilization Solutions


A Brief Description of The Course

Central Sterilization Solutions first started teaching in 2011. From years of experience in the field, CSS instructors recognized a huge opportunity for a better Sterile Processing education course. With rising costs and lack of proper training in the industry, Central Sterilization Solutions decided to design a course that is cost-effective and has extreme attention to detail.

Originating in the heart of Southern California, CSS hosts two classroom courses located in Los Angeles and Riverside. Online courses are available for students that need a more flexible schedule.

Depending on the option you choose, it will take approximately 20 to 40 hours a week to complete course material over the five months you are with us.

Once you receive your course material, you will be working and studying to complete the requirements for your certification.

These requirements will consist of: completing your reading, homework and tests while coming into class one day a week. Each week a lecture will be held discussing two new chapters by the instructor. The time needed to keep up with this schedule will require that you dedicate a minimum of 25 hours each week to prepare for the exam.

You will also be required to volunteer at one of the partner hospitals and complete the 400-hour internship of hands-on training. This training will help you pass the national exam as well as have you ready to apply for a position as a Sterile Processing Technician.

Online students have the ability to choose their schedule. Once enrolled, students will have instant access to our enriching course. Textbooks will be shipped (textbooks included with tuition) by our team. The online course features a step-by-step guide simulating our classroom course. Students will still need to complete the mandatory 400-hour internship of hands-on training for the national exam.

Harry Mullen


Harry joined the Navy in 1984 and served as a Hospital Corpsman in hospitals as well onboard a Fast Frigate ship. He began as a sterilization technician in April 1988. 20 years later, Harry received his first certification and earned a promotion to a supervisor position. Two years after that, he transferred to the Kaiser Permanente Downey Medical Center to take over as the Department Administrator. He retired at the end of 2011. The total amount of certified members as of 2020 is 33,756.  There are a total of 4 certifications available through IAHCSMM. Harry Mullen 1 of 226 member to hold all 4 certifications. Harry joined the California Central Service Association as a regional director in the LA, Ventura and Santa Barbara area. He was the President of CCSA in 2017 & 2018. In 2011, Harry started Central Sterilization Solutions with the idea of changing the culture of Sterile Processing one student at a time. CSS upon opening had students passing the CRCST exam at a rate of 65% and within a few years was able to raise that to an average of 90-95%. Harry holds a Bachelors and Masters in business from Canterbury University through their distant learning program.

James Hoxie


James Hoxie has been with Kaiser Permanente for over 25+ years. He started career in the storeroom and quickly worked his way up into management. He is currently the Dept. Administrator in Sterile Processing at the Kaiser Irwindale Surgical Center. In 2011, James helped to start Central Sterilization Solutions. He is one of the instructors at our Los Angles location as well as a Consultant. James along with the owner Harry Mullen and their trusted staff are leaders in consulting and SPD education.  Since 2011, CSS has helped many hospitals to become survey ready after failing and being cited by such organizations as The Joint Commission, DHS and CDPH.  Several hospitals within Southern California as well as hospitals outside of California have called upon Harry and James.

Ken Croteau


Ken is our first instructional assistant for CSS.  His impact on the students is impressive. He started with CSS as a student back in 2018.  As a student he led a group of students after class in the library.  The success rate of students passing as well as scoring high on the final exam was such that after graduation, he was offered a position in order to tutor future classes. He obtained his certification immediately and was given a position at a top hospital group in San Diego county. After 18 months, he was promoted to a supervisor.  CSS is proud to have Ken with us.

The School

Our school first started teaching the Medical Instrument Sterilization Course at the University of Phoenix. Today we are teaching classes at Orange Terrace Community Center in Riverside, CA and the Good Samaritan Hospital in Los Angeles CA. Online course options are available to everyone. If you need an experienced sterilization technician make sure to contact us!

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Our Mission

Central Sterilization Solutions (CSS) was created for professionals at all levels of their career. Providing one of a kind education experience to get people into the medical field fast. Our success is based on our students, that’s why we put them first before everything else. CSS will be there from curiosity to job placement.


With over 30 years of in the field experience, CSS was developed by professionals for professionals. From technicians, leads, managers, and educators. CSS knows what the industry is looking for. For this reason, our program is so unique compared to the rest.


With other schools and courses raising rates, CSS has always had a simple mission. “Keep our students out of debt, while they pursue their passion therefor we offer the financing option to make easy monthly payments or receive a discount for paying off their education.


We understand that in this competitive job market, it’s important to be ready for the job you have been waiting for is finally available. Thus our program is designed with be fast and to work with your schedule. With in-class or online course available.


Thank you for considering Central Sterilization Solutions as your preferred certification provider.

Find Out What We Can Do For You

Free Sterile Processing Program Overview