Our Practice



Providing injured workers the best medical treatment available so they can return to work promptly.

California Occupational Medical Professionals began as a collaborative effort of Dr. David Mckinney and Karen Lundberg NP in Oroville California in November 2000. Both had been instrumental in the development of occupational medical services and Workers Compensation programs for local hospitals.

When it became apparent that the intricacies of the system did not work well in an environment designed primarily to treat the general welfare of the public, they decided to create an organization for workers comp in Oroville that was specifically built from the ground up to address the challenges injured workers, employers, and insurance companies faced in trying to provide quality, appropriate, timely medical services designed to resolve the specific medical issue involved and return the worker to his or her occupation as quickly as possible.


In the last 12 years, the Workers Compensation system has undergone massive regulatory changes and California Occupational Medical Professionals has strived to stay ahead of the change to continue our mission of making certain the injured worker receives the best medical treatment available so they can return to work promptly.

Out of this commitment, our dedication to wellness programs designed to prevent injuries before they happen has evolved. Our onsite programs for employers are designed to prevent loss time and demonstrate to employees, both current and potential, that the employer is committed to their current and continued health and wellbeing by offering pre-employment physicals and other services.


Dr. David Mckinney, MD, MPH, MAMD, ACOEM, ACSM, AAFP

One of the original founders of our company, Dr. Mckinney has over twenty years experience in the Occupational and Workers Compensation field. He is a certified Qualified Medical Examiner, Medical Review Officer, Independent Medical Examiner, Agreed Medical Examiner, Senior Flight Surgeon, and Department of Transportation Commercial Driver Examiner, and is on several committees for the American College of Occupational and Environmental Medicine and the Western Occupational and Environmental Medicine Association.

Dr. Mckinney is a consultant for the Federal Motor Carriers Safety Association in their efforts to produce a certification program for all medical providers wanting to perform Department of Transportation Commercial Drivers Examinations.

Dr. Mckinney's training and experience make him uniquely qualified in helping companies develop corporate wellness programs. He has worked with several governmental organizations — including police and fire departments — in developing and implementing wellness programs designed to both increase the employees health and fitness and reduce the employer’s Workers Compensation risk. .


Callie Quarrels-Larson, Office Administrator

Callie has over twenty years experience in Workers Compensation and Occupational Health. She has not only worked for an Insurance Company as a claims adjuster, but also as a claims representative for a plaintiff attorney. Her experience on both sides of a Workers Compensation claim gives her invaluable insight in the successful navigation of a claim through the system. This experience helps both the injured worker receive the proper treatment and also reduces unnecessary expense to the employer and the insurer by producing timely, concise and comprehensible reports of the progress of a case from inception to closing.

Callie also worked for a major hospital in their employee health department and is a certified medical assistant.


Dr. Jothi Jeevan Suhas, DNP, FNP, NEA-BC, APRN, PHN, NRCME

Dr. Suhas completed his Doctorate in Nursing Practice at the University of Alabama. He has a Master's in Leadership and Management from Western Governors University and has completed his Post-Master's as a Family Nurse Practitioner from Samuel Merritt University, California. He is a FMCSA Certified Medical Examiner (for DOT CDL physicals) and board certified as a Nurse Executive, Advanced. 

Prior to specializing in occupational health, Dr. Suhas' healthcare background includes work in the ER, Urgent Care, Medical-Surgical/Telemetry hospital floors, Home Health and Dermatology, as well as licenses as a RN, LVN, CPT1 and EMT. Dr. Suhas is a former Merchant Marine Officer. He spent nine years sailing up to the rank of Chief Officer prior to switching to healthcare.



Morgan completed her Masters Degree in Nursing at Columbia University and Preceptorship also at Columbia University. Prior to specializing in occupational health, she has previously worked in a union clinic on the east coast providing medical care for union employees. In addition to being a FMCSA Certified Medical Examiner (for DOT CDL physicals), she has also worked as an Adult/Gerontology primary care NP and has an established bedside nursing background. 


Melissa Clark, FNP-C, MSN, APRN, NRCME

Bachelor of Science degree in nursing from Jacksonville University; Master of Science degree Nurse Practitioner South University Savannah Georgia. Melissa worked at the University of California San Diego before specializing in occupational health. She is also a FMCSA Certified Medical Examiner (for DOT CDL physicals).

From the front office, to the back office, to the Medical Providers and Office Administration, California Occupational Medical Professionals offer the most experienced, professional, knowledgeable staff available, which works exclusively on your Occupational and Workers Compensation needs.