To find medical assistant jobs in California on Indeed, follow these steps:

1. Go to indeed.com.
2. Type "Medical Assistant" in the "What" field.
3. Type "California" in the "Where" field.
4. Click the "Find Jobs" button.
5. You will see a list of medical assistant jobs in California. You can sort the results by relevance, date posted, salary, and more.
6. Click on any job title to see the full job description.
7. If you find a job that you're interested in, you can apply directly through Indeed by uploading your resume and cover letter, or by using the "Apply Now" button on the job posting.

Keep in mind that the requirements for medical assistant jobs can vary depending on the employer. Some employers may require a high school diploma or equivalent, while others may require a certification from an accredited program. Be sure to read the job descriptions carefully to ensure that you meet the requirements before applying.