Our Staff



Heather Parks, Medical Assistant, Clinical Manager

Occupational health since March 2002
Certified pulmonary function/spirometry technician.
CAOHC certified hearing conservationist/tech for audio testing.

Kathy Ward, RT (R)

Occupational health since 2014
Board certified and state licensed registered X-ray Technologist, CAOHC certified hearing conservationist/tech for audio testing, Trained in AeliusMD, vision testing,  pulmonary function testing, treadmill technician, blood drawing, urinalysis, urine drug testingBLS Certified 

Stephanie Valencia, Medical Assistant/NEMT

Occupational health since 2009
CAOHC certified hearing conservationist/tech for audio testing.
Trained in GalenMD, vision testing, pulmonary function testing, treadmill technician, blood drawing, urinalysis, urine drug testing, A1C diabetes testing, injury and emergency care. BLS Certified.

Yolanda Gomez, RPT/Phlebotomist/MT

Occupational health since 2013
Certified Phlebotomist through American Medical Technologies (AMT).   Trained in AeliusMD, audiograms, vision testing, pulmonary function testing, treadmill technician, urinalysis & urine drug testing. B.A.T. certified.

Has been awarded four (4) times with the “Phlebotomist of the Year” for the State of Arizona through AMT and was nominated again in 2014.

Received the National “Distinguished Achievement Award”.

Martin Pesqueira,Medical Assistant

Recent graduate of Pima Medical Institute.

Thomas Chadwick, PFT

Occupational Health since 2017
Firefighter/EMT since 2014
Certified PFT with NASM ACE
BA in Kinesiology Sport Medicine

Robin Braun, Admin. Assist., Accounts Payable

Occupational health since 2005
Social Media Specialist
Trained in AeliusMD

Ilene Yalen MSRD, Dietitian

Occupational health since 2008
Masters of Science in Nutrition
Registered Clinical Dietitian since 1994

Experience in weight loss/gain, diabetes, heart disease, hypertension, geriatrics, pediatrics, sports nutrition, nutrition for firefighters, eating disorders and research.


our providers



Lisa Ritter, PA-C, MMS

Graduate of Syracuse University, B.S. and Midwestern University, Master’s in Medical Science, MMS. Nationally certified as a PA-C since 2007.

Background in gastroenterology, hepatology, orthopedics, neurology and emergency medicine.

Prior to her career in medicine, she was a first responder and worked as a paramedic/firefighter.

Diane Musante, PA-C, MS-PAS

Graduate of Saint Anselm College, Manchester, NH, BA in Biology
Master’s degree in Physician Assistant Studies, MS-PAS, Arizona School of Health Sciences in 2000.
National Certification as a Physician Assistant, PA-C, 2000 to present.
National Registry of Certified Medical Examiners, NRCME for DOT, 2014 to present.
Physician Assistant experience includes Emergency & Urgent Care medicine, Primary Care, Pediatrics, and certification by the National Registry of EMT's in 1998.


Dr. Scott Krasner maintains his teaching position at the University of Arizona College of Medicine, and is Board Certified in Occupational Medicine, and Certified Independent Medical Examiner. He has been a Breath Alcohol Technician and Instructor and a Certified Medical Review Officer since the drug testing programs were established. Dr. Krasner is a Fellow of the American College of Occupational and Environmental Medicine, and Second Vice-President of the Western Occupational and Environmental Medical Association.

Dr. Krasner continues his clinical practice in occupational medicine, with special focus in the mining industry, fire and police (where he is Az POST Certified).

Stefanie Lundell, MD, MPH

Former Air Force Flight Surgeon                                              Board Certified Occupational and Environmental Medicine        Occupational Medicine and MPH at the University of Arizona      Firefighter cancer prevention and part-time clinical research Functional Medicine

Caryl Gorman, MD, MSc (MPH equivalent)

20 years experience Board Certified Occupation and Environmental Medicine Strong background in orthopedic medicine

Kate O'Reilly, Pt, dpt, cscs, tsac-f, President

BS in Physiological Sciences at University of Arizona, Doctor of Physical Therapy at University of Southern California

Kate specializes in working with Southern Arizona’s first responders. She has helped members of almost every Southern Arizona Fire and Law Enforcement agency, as well as Border Patrol and members of the US Military.

Helping to promote firefighter fitness and prevent injury, she works closely with Peer Fitness Trainers to design workouts for individual fire fighter, recruits and departments.

As the President of WellAmerica, Inc, she will continue promoting firefighter wellness along with the experienced staff of WellAmerica.