About

Two drivers, one African-American and one blond, are checking some papers in front of their red trucks.
How Exam Professionals Inc. Started

The co-founders of Exam Professionals Inc., Dr. Guiffre MD & Tina Hall FNP, developed this company over a decade ago to address some needs and deficiencies in the Employment Medical Screening Process. Surprisingly, these deficiencies still exist today. In typical Occupational Health Facilities, wait times for your employee candidates can be hours, even for a simple pre-employment drug test. This is because injuries and worker’s compensation cases always get prioritized over a simple drug test.

At Exam Professionals, we do not evaluate sick or injured clients – we focus solely on employment exams, screenings, and drug testing.  

TIMELY SERVICE… Employees get IN, OUT, and BACK to WORK!

High Quality Employment Screening Exams in California:

Both Dr. Guiffre and Tina Hall have high standards for themselves and their staff. After decades working in teaching hospitals, it has been rewarding to develop a system for quality employment screenings that are efficient and accurate. They personally train their staff so that each exam is done consistently and accurately for each company.

Several blood samples in the centrifuge.

Medical Exam Providers

Our experienced and dedicated medical professionals are well-versed in the specific requirements and guidelines for each type of examination, ensuring accuracy and compliance. Get on the road to success - meet our expert team at Exam Professionals Inc.

Tina Hall

Tina Hall RN, MSN, FNP

Chief Executive Officer

Tina Hall is dedicated to using her extensive knowledge and teaching skills to provide the safest DOT-compliant examinations.

Education and experience

Tina Hall started her medical career in 1987 when she graduated summa cum laude with a BSN from Azusa Pacific University. Her sharp clinical acumen earned her the position of charge nurse of the Medical-Surgical Unit at the Jerry L. Pettis Memorial VA Hospital. Within nine months, she started working in the Surgical Intensive Care Unit and was promoted to Charge Nurse.

Her ongoing desire to learn more led her to a position in the San Bernardino County Medical Center Emergency Department (now Arrowhead Regional Medical Center). During her nine years of practice at this Level II Trauma and Burn Center, she became the charge nurse and a designated Trauma Nurse.

In 1998 she graduated with honors from California State University at Long Beach with a Master of Science in Nursing (MSN) and as a Certified Family Nurse Practitioner (FNP). After two years at Loma Linda University Outpatient Surgical Center and Pain Clinic, she returned to the Emergency Department at Arrowhead Regional Medical Center. She also additionally worked at a local Urgent Care Clinic which enhanced her skill sets as well.

Several years ago she had the opportunity to apply her vast experience in medical examinations to the DOT medical exams for commercial drivers. This work experience was so interesting and rewarding that she co-founded Exam Professionals Inc. as a result.

Passion for teaching

Ms. Hall’s passion for teaching is evidenced by her certification as a CPR Instructor, clinical instructor for the Critical Care and Emergency Medicine rotation of a local RN Program, and her work with the Nurse Advice Line. Additionally, she has training in Legal Nurse Consulting.

Personal life and hobbies

Tina and her husband, Stuart, have been married for 32 years and have 3 adult children. Her hobbies include traveling and reading.

Debra Guiffre

Debra Y. Guiffre, MD, FAAEM

Medical Director / Chief Operations Officer

After more than 25 years in the chaotic world of emergency medicine, Dr. Guiffre retired to a life of boredom! She was rescued in 2010, when Tina Hall, FNP, invited her to become a partner in Exam Professionals Inc. Together they built a company that specializes and excels in performing employment physical exams (including DOT exams) and all types of additional employment screenings and drug tests.

Education and experience

Dr. Guiffre began her medical career in the Navy at the Naval Hospital San Diego. A keen interest in rapid and accurate evaluation of patients, lead her to be selected for a position in the Emergency Medicine Residency program at Brooke Army Medical Center.

Following her residency, Dr. Guiffre was appointed as the department head of Emergency Medicine at the Naval Hospital in Naples, Italy. Her responsibilities included overseeing over 140 different types of physicals performed on officers and enlisted personnel for all branches of our military.

She is board certified by the American Board of Emergency Medicine (ABEM). She was recognized as a Fellow in the American College of Emergency Medicine (FACEP) and as a Fellow in the American Academy of Emergency Medicine (FAAEM) for her contributions, research and excellence in the field of emergency medicine.

Passion for teaching

Her love of teaching lead her to become an instructor in both Advanced Cardiac Life Support, and Advanced Trauma Life Support. After 8 years in the Navy, she left and became the clinical director at the San Bernardino Regional Medical Center. It was here that she saw patients and supervised medical students, interns, and residents in the emergency department.

Concurrently, Dr. Guiffre was also a teaching attending in the emergency department at Loma Linda University Medical Center. She then became the only physician in the county holding positions at both of San Bernardino’s trauma center emergency departments.

Personal life and hobbies

Dr. Guiffre enjoys spending free time with family, friends, and spoiling her fur-babies.

Christina Dang

Christina Dang PA-C  

Certified Medical Examiner

Christina Dang started off as a medical laboratory scientist after graduating with a BS in Medical & Research Technology in 2015. She worked at a clinical laboratory at Johns Hopkins Hospital while also teaching and instructing part time at different medical laboratory science programs in the Baltimore area. After working as a clinical laboratory scientist for a couple of years she decided she wanted to continue her journey in medicine, going on to become a Physician Assistant.

Education and experience

She completed her Physician Assistant studies after graduating from the University of Maryland, Baltimore with a master’s in health sciences. She became a board-certified Physician Assistant in 2020. Initially starting out as a Physician Assistant in a gastroenterology clinic, she came across an opportunity to work as a Certified Medical Examiner for DOT physicals. From there she worked with Dr. Guiffre and Tina Hall to consistently provide quality DOT physicals and employment physicals. She loves taking the time to talk to and educate clients.

Personal life and hobbies

Christina loves spending time with family, traveling, and staying active outdoors.


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