Medical Director - Immunology - San Juan Capistrano in San Juan Capistrano, CA at Quest Diagnostics

Date Posted: 1/5/2022

Job Snapshot

Job Description

Medical Director, Immunology – San Juan Capistrano, CA

Recognized by FORTUNE magazine as one of the “World’s Most Admired Companies,” Quest Diagnostics is the world's leading provider of diagnostic testing, information and services that doctors and patients need to make better healthcare decisions. They are pioneers in developing innovative diagnostic tests and advanced healthcare information technology solutions that help improve patient care.

With corporate headquarters in Secaucus, NJ, Quest Diagnostics is a Fortune 500 company traded on the New York Stock Exchange (NYSE: DGX) and included in the Dow Jones Sustainability World Index.  With 2020 revenues of $9.44 Billion and approximately 50,000 employees and 6,600 patient locations across the US, Quest Diagnostics serves half of the physicians and hospitals in the US with their large variety of products and services. 

The company offers the broadest access to diagnostic testing services through its network of laboratories and patient service centers and provides interpretive consultation through its extensive medical and scientific staff. Quest Diagnostics also provides services to employers, life insurance companies, other commercial labs, clinics, health plans, government agencies, and organizations involved in clinical trials research.

Approximately 150 million times each year, patients and their physicians rely upon Quest Diagnostics results to make important healthcare decisions and approximately one third of U.S. physicians – and many of the country’s leading hospitals and health systems – relies on Quest Diagnostics healthcare information solutions to foster better patient care and outcomes.


•         FORTUNE magazine's "World's Most Admired Companies" list for 7 consecutive years; one of only five companies to attain Most Admired status in the "Health Care, Pharmacy and Other Services" industry category. 

•         Fortune magazine’s Fortune 500 list

•         Forbes® Global 2000

•         Forbes®' America's Best Employers List for third consecutive year

•         Forbes® 2020 America’s Best Employers for Women for second consecutive year

•         S&P 500

•         Barron’s 500

•         Member of the Dow Jones® Sustainability World Index

•         Included in the FTSE4Good, Calvert, and Ocean Tomo sustainability indices

•         Listed in the most recent Newsweek Green Rankings

•         Consistently named one of the best places to work in U.S. business journal rankings

•         Named a DiversityInc Noteworthy Company for third consecutive year

•         Listed on the Disability Equality Index® (DEI), a joint initiative of the American Association of People with Disabilities (AAPD) and the US Business Leadership Network (USBLN), recognizing companies for prioritizing the inclusion of people with disabilities

•         Named Top 23 ‘Best Places to Work for LGBTQ Equality’ in New Jersey

•         Named a Best Place to Work for LGBTQ Equality by scoring a perfect 100 on the Human Rights Campaign Foundation’s 2021 Corporate Equality Index (CEI) for the fifth consecutive year

•         Achieved Cancer Gold Standard accreditation from the CEO Roundtable on Cancer, recognizing our actions to reduce the cancer risk of employees and their families

•         Received C. Everett Koop National Health Award for Efforts to Promote Employee Health in 2020

Diagnostic Testing Services

Quest Diagnostics is the world’s leading provider of diagnostic testing, information and services that patients and doctors need to make better healthcare decisions. Their services range from routine blood tests — such as total cholesterol, Pap testing and white blood cell count — to complex, gene-based and molecular testing. They perform medical tests that aid in the diagnosis or detection of diseases, measure the progress or recovery from a disease or confirm that an individual is free from disease. In addition, they have specialized expertise in cancer, cardiovascular diseases, infectious diseases, and neurology.


In the $60 Billion and growing US Diagnostic Testing Market, Quest Diagnostics is the leader. Quest Diagnostics’ reputation as a leading innovator, provider of high value, low cost solutions and its financial strength and flexibility make it well positioned to capitalize on the evolving healthcare landscape.

Quest Diagnostics’ long-term strategy is to become the undisputed world leader in diagnostic testing, information and services. To drive this profitable growth, Quest Diagnostics plans to leverage capabilities to create differentiation:

•         Deliver Innovative Solutions

•         Leverage their Unparalleled Access and Distribution Network

•         Expand their relationships with large payors and health systems

•         Deliver Superior Patient Experiences

Position Description

The Medical Director is responsible for providing scientific and clinical direction to the clinical laboratory within their area(s) of expertise which will maximize quality patient care and ensure continuous business growth throughout the Quest Diagnostics family of Laboratories. Assume Clinical Consultant or Technical Supervisor responsibilities as assigned by Vice President, Research & Development, Core Diagnostics and Technology Development and local operational senior management. Act as an SME within the area of their expertise for internal clients including Clinical Franchises, Research and Development, Chief Medical Officer Organization and Operations. Present at national/international conferences on the assays developed and provided by Quest as well as help write scientific publications about the same.

Areas of Responsibility


•         Reviews, interprets, documents and approves clinical test results within established turnaround times.

•         Serves as the Subject Matter Expert and honors requests for consultations from clinicians regarding the appropriateness and interpretation of laboratory tests. Due to the importance of quality patient care, servicing consultation requests of all types is considered imperative.

•         Reviews new research developments in the appropriate fields of expertise. Makes recommendations on strategies and tests to develop consistent with mandates from the Vice President, Research & Development, Core Diagnostics and Technology Development

•         Reviews, with Vice President, Research & Development, Core Diagnostics and Technology Development and/or Senior Laboratory Director, testing which may be reloaded to Quest Diagnostics regional laboratory facilities.


•         Approve of the test method selection and validation.

•         Ensure that the proficiency testing program is conducted in a timely manner, reviewed by appropriate staff, and approve of corrective action when a proficiency testing result is found to be unsatisfactory.

•         Establish and monitor quality control to ensure that acceptable levels of analytical performance are maintained for each test system. Ensure that patient test results are reported only when the system is functioning properly.

•         Approve all corrective action and preventative action plans and procedure.

•         Approve Job Assignments and Authorization Matrix (JAAM) to ensure that all personnel have the appropriate training and demonstrated performance for the type of testing offered.

•         Annually review Standard Operating Procedures for test systems.

Lab Management

•         Member of appropriate Best Practice Teams (BPTs). Attendance at regular Subspecialty Team meeting and other senior laboratory management staff meetings. Participates in all significant scientific, business and policy decisions impacting the clinical utility and quality of testing services.

•         Interacts with Academic Associates in areas of assigned expertise to develop new strategies and testing methods.

•         Interacts with Clinical Correlations staff. Reviews potential reference ranges for all new analytes in areas of assigned expertise. Responsible for reference range memoranda for appropriate tests.

•         Interacts with both internal (Client Services, Lab Services, Sales and Marketing) and external clients to facilitate and foster increased transfer of information related to medicine and science at Quest Diagnostics. Works closely with Sales staff throughout Quest Diagnostics to provide appropriate medical scientific support as required.

•         Attendance at National meetings in areas of assigned expertise to maintain/build knowledge and to provide representation for Quest Diagnostics.

•         Effectively communicates and builds relationships and collaboration across internal departments, other Business Units within Quest Diagnostics and external customers.

Supervision Requirements

•         May Require Direct Report Supervision of a small team as well as day to day oversight/support e.g. reviewing operational data, patient results, troubleshoot assays etc. and providing guidance to the Laboratory Operations staff

Job Requirements

•         Applicants must hold an MD or DO degree and should be board certified in at least one of the following specialties:

o   Rheumatology by the American Board of Internal Medicine

o   Allergy and Immunology

•         State Medical License to practice in California.

•         NYSDOH requirements: As required by New York State Public Health Law, all individuals designated as laboratory directors or assistant directors at a clinical laboratory or blood bank holding or applying for a New York State clinical laboratory permit must hold a Certificate of Qualification in the required categories.

•         Progressive lab industry leadership exposure is preferred

•         All physicians should be prepared to demonstrate competence in their fields of practice.

To Apply

Please Log In or Register to Upload a Resume and complete the online Application by visiting, clicking “Job Search” and following the prompts. Because of the large number of applicants to job openings, Quest Diagnostics will only contact qualified candidates for interviews.

Quest Diagnostics is an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.


Kristyn Stuiso 

Sr. Talent Acquisition Partner, Physician and Executive

Quest Diagnostics, Inc.