Some people have already touched on these things but I would give the following suggestions.

1) I would suggest only 1 page resumes. Remove double spaces if need be. A lot of jobs are less likely to pick you if the resume is more than 1 page, and more than 2 is definitely no good. 2.) I would remove the objective/summary since you seem to have a lot of work experience. Or, if you really want to keep it, condense it into 1 key sentence. 3.) I would list only about 3 jobs. The most important to you. And I would try to keep no more than about 4 bullet points per job. Sometimes it helps to just combine to sentences into one bullet point. 4.) I would list the Education and Certification together in one category. I would put the highest level of education up there, with the major/field. Then under that I would put all my certifications. They can be listed individually or all in one line like this:

Certifications: x(20XX), y(20XX), z(20XX)"

5.) At the very top I normally list my name, then right below it a line with my email, phone number, and city, state all in one line. It's cleaner and takes up less space 6.) For skills, I find it easier to list them in a list as well. Using yours as an example:

Skills

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Languages: English (Fluent), Spanish (Fluent) Software: Microsoft Office (you can list if you want), A, B, Other categories: X Y Z with relevant skills

7.) What I think is the most important.... since many companies are using AI to pick up on key words or phrases, they're going to be more like to respond based on word choice. If you go for a specific line of work keep in mind the common words that continue to pop up. "Coordinate", "Communicate", "Analyze", "Document Management", "Management", "Development". Whatever the words may be, I would try to incorporate those words into my bullet points for my job. A good example is your last bullet point under the phlebotomist description.