Clinical Medical Assistant Jobs at Quest Diagnostics with Visa Sponsorship
Clinical Medical Assistant jobs at Quest Diagnostics are available across patient service centers and clinical labs nationwide, where you'll handle specimen collection, patient intake, and diagnostic support. The company has an established process for sponsoring international candidates in this role, making it a viable target if you're navigating work authorization.
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Job Description
$5,000 Sign On Bonus Available (For Externals Only)
Clinical Lab Scientist I
Location: San Juan Capistrano, CA
Work Schedule: Tuesday to Saturday, 7:00 AM to 3:30 PM
Department: Microbiology
Pay range: $40.00 - $56.44 / hour
Salary offers are based on a wide range of factors including relevant skills, training, experience, education, and, where applicable, certifications obtained. Market and organizational factors are also considered. Successful candidates may be eligible to receive annual performance bonus compensation.
Benefits Information
We are proud to offer best-in-class benefits and programs to support employees and their families in living healthy, happy lives. Our pay and benefit plans have been designed to promote employee health in all respects – physical, financial, and developmental. Depending on whether it is a part-time or full-time position, some of the benefits offered may include:
- Day 1 Medical, supplemental health, dental & vision for FT employees who work 30+ hours
- Best-in-class well-being programs
- Annual, no-cost health assessment program Blueprint for Wellness®
- healthyMINDS mental health program
- Vacation and Health/Flex Time
- 6 Holidays plus 1 "MyDay" off
- FinFit financial coaching and services
- 401(k) pre-tax and/or Roth IRA with company match up to 5% after 12 months of service
- Employee stock purchase plan
- Life and disability insurance, plus buy-up option
- Flexible Spending Accounts
- Annual incentive plans
- Matching gifts program
- Education assistance through MyQuest for Education
- Career advancement opportunities
- and so much more!
This position is accountable for performing clinical laboratory testing, following all applicable policies and procedures.
Responsibilities
- Independently performs moderate to highly complex clinical tests following the required procedures and policies. Performs newly introduced tests to the laboratory that require defined skills.
- Prepares and oversees the preparation of reagents or media as well as stock solutions, standards, and controls. Tests new reagents or controls and evaluates their usefulness based on standard criteria.
- Determines the acceptability of specimens for testing according to established criteria in testing procedures.
- Determines calculated results utilizing testing data by means of manual or computerized procedures.
- Accurately enters results of testing. Checks the computer review reports to monitor accurate reporting of laboratory results. Adheres to analytical schedules to maintain turnaround times of results.
- Evaluates the acceptability of routine and complex analyses prior to releasing patient reports. Recognizes and takes appropriate action in response to critical values or unusual or unexpected results, and documents action taken.
- Responsible for preventative maintenance, troubleshooting and calibration of laboratory equipment.
- Evaluates the results of instrument performance checks. Performs linearity, accuracy and precision checks as required.
- Performs Quality Control and calibrations with the appropriate frequency and evaluates results, to determine acceptability of result release.
- Selects and evaluates control materials using established criteria. Initiates a corrective action process whenever test systems do not perform according to the established criteria.
- Accurately performs and records proficiency testing.
- Demonstrates the ability to detect and correct technical and operational problems. Notifies the supervisor, and contacts manufacturer or field service support for additional assistance, if necessary.
- Ensures accurate tracking and labeling of reagents and supplies.
- Consistently maintains a safe and neat work area.
- Demonstrates effective two-way communication with staff, immediate manager, suppliers, internal and external customers, via meetings, written and verbal interactions, to create an informed positive environment.
- Actively participates in staff meetings, and in Quality Improvement meetings as assigned.
- Takes on additional business-related responsibilities or projects, as delegated by the Supervisor or Manager. This may include but not be limited to evaluation of new techniques and procedures in terms of personnel and requirements, method comparison, cost analysis, establishment of reference ranges, writing and revising technical procedures, and evaluation of productivity and key results measures.
- Responsible for following all required procedures, practices and related guidelines as provided in company policy and associated procedures for safety, environmental, and infection control.
- Collects and dispose of waste in proper receptacles.
- Demonstrates a high level of integrity and honesty in maintaining confidentiality.
- Provides direct and constant supervision to unlicensed staff as necessary and trains staff in proper performance of both routine and complex procedures. Supports Training Programs, where applicable.
- Maintains professional growth and development through continuing education. The continuing education must meet the education requirements for California state licensure.
- Answers phones, transfers, or takes accurate messages.
- Complies with all health and safety policies, procedures, and practices. Required to use personal protective equipment.
- Other duties as assigned. This is not an exhaustive list of all duties and responsibilities, but rather a general description of work performed by the position.
Qualifications
Required Work Experience
- Zero to three year’s direct experience in a laboratory setting.
Physical And Mental Requirements
- The normal performance of duties may require lifting and carrying objects. Objects in the weight range of 1 to 10 pounds are lifted and carried frequently; objects in the weight range of 11 to 25 pounds are lifted and carried occasionally and objects in the weight range of 26 to 50 pounds are seldom lifted and carried. Objects exceeding 50 pounds are not to be lifted or carried without assistance.
- Ability to perform repetitive tasks. Frequent simple grasping, reaching and fine manipulation.
- Ability to sit and/or stand for long periods.
- Have good eye and hand coordination.
- Testing for color blindness will be required upon hiring or transfer into technical functions requiring detection of, or rating of intensity of colors (e.g., Fluorescent microscopy reading).
Skills
- Proficiency in Microsoft Office Application (Word, Excel, Outlook)
- Strong typing skills desirable.
- Other automation skills helpful.
Education
- Bachelor’s Degree Medical technology or other life or physical sciences from an accredited college or university. (Required)
Licenses and Certifications
- Current State Clinical Laboratory Scientist license if necessary (e.g. California) (Required)
Qualified applicants with arrest or conviction records will be considered for Employment in accordance with the following laws if applicable, the Los Angeles County Fair Chance Ordinance for Employers, the Los Angeles' Fair Chance Initiative for Hiring Ordinance, the San Francisco Fair Chance Ordinance, and the California Fair Chance Act. Quest believes that conviction records may have a direct, adverse, and negative relationship to the following job duties: accessing company property, information, assets, and products including sensitive information; accessing customer data or confidential information, and partnering and regularly working with or supervising other Quest employees and interacting with Quest customers. MLS, Medical Laboratory Scientist, Medical Lab Scientist, Med Tech, Medical Technologist, CLS, Clinical Lab Scientist
About The Team
Quest Diagnostics honors our service members and encourages veterans to apply. While we appreciate and value our staffing partners, we do not accept unsolicited resumes from agencies. Quest will not be responsible for paying agency fees for any individual as to whom an agency has sent an unsolicited resume.
Equal Opportunity Employer: Race/Color/Sex/Sexual Orientation/Gender Identity/Religion/National Origin/Disability/Vets or any other legally protected status.
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Get Access To All JobsTips for Finding Clinical Medical Assistant Jobs at Quest Diagnostics
Get Your Phlebotomy Certification Before Applying
Quest prioritizes candidates who already hold a nationally recognized phlebotomy or clinical medical assistant certification, such as CMA or RMA. Having this credential before you apply removes a common early screening barrier and signals you're ready to work on day one.
Target Patient Service Center Postings Directly
Quest's Clinical Medical Assistant openings are concentrated in their patient service centers, not just hospital or reference lab settings. Search their careers portal by location and filter for patient services roles to find the highest-volume hiring pipeline for this specific function.
Confirm OPT or CPT Eligibility Before Your Interview
If you're on an F-1 visa, verify your OPT authorization dates align with Quest's typical onboarding timeline, which can run four to six weeks after an offer. Arriving at the offer stage without valid work authorization on hand stalls the process for both sides.
Understand How TN Status Applies to This Role
Canadian and Mexican nationals can pursue TN status for medical technologist or related classifications, but the job duties must clearly align with the approved TN occupation list. Work with your employer to confirm the Clinical Medical Assistant job description maps correctly before USCIS or a port of entry review.
Ask HR About H-1B Filing Timelines at Offer Stage
Quest's HR and immigration teams handle H-1B petitions through the annual April filing window. If you receive an offer outside that window, clarify whether they'll file a cap-subject petition in the next cycle and what your work authorization bridge looks like in the interim.
Use Migrate Mate to Find Open Roles by Visa Type
Sorting through which Quest postings are actively sponsoring for your specific visa type takes time. Use Migrate Mate to filter Clinical Medical Assistant openings at Quest Diagnostics by the visa categories that match your situation, so you apply where sponsorship is already in motion.
Frequently Asked Questions
Does Quest Diagnostics sponsor H-1B visas for Clinical Medical Assistants?
Yes, Quest Diagnostics has a documented track record of sponsoring H-1B visas for Clinical Medical Assistant roles. Sponsorship typically flows through their central HR and immigration team rather than individual hiring managers, so the strongest path is confirming sponsorship availability during the offer stage, before you reach the background check phase.
How do I apply for Clinical Medical Assistant jobs at Quest Diagnostics?
Applications go through Quest Diagnostics' careers portal, where you can filter by role type and location. Most Clinical Medical Assistant postings require an online application and an initial phone screen before an in-person or video interview. Migrate Mate also surfaces Quest's open Clinical Medical Assistant positions filtered by visa sponsorship availability, which helps you target the right postings faster.
Which visa types does Quest Diagnostics commonly use for Clinical Medical Assistant roles?
Quest sponsors H-1B and employment-based Green Card pathways including EB-2 and EB-3 for longer-term hires. F-1 students on OPT or CPT are also commonly placed in Clinical Medical Assistant roles, particularly for part-time or training-adjacent positions. Canadian and Mexican nationals may qualify under TN visa status depending on how the specific job duties are classified.
What qualifications does Quest Diagnostics expect for Clinical Medical Assistant candidates?
Quest typically expects a medical assistant diploma or associate degree, plus a recognized certification such as CMA through AAMA or RMA through AMT. Phlebotomy competency is frequently listed as required rather than preferred. Prior experience in a high-volume patient service center or diagnostic lab environment strengthens your application significantly over a general clinical background.
How do I time my application around Quest's H-1B sponsorship process?
H-1B petitions are filed with USCIS each April for an October 1 start date. If you're targeting a cap-subject H-1B through Quest, aim to have an offer finalized by February or early March at the latest. Candidates already on OPT can start sooner and transition to H-1B in a subsequent cycle without interrupting employment.