Andrew J. Vosburgh, MD
Corporate Medical Director
Dr. Vosburgh has over 20 years of experience treating occupational illnesses and injuries.  As Corporate Medical Director for St. John Health – Occupational Health Partners, Dr. Vosburgh is responsible for the health and safety for 18,000 hospital associates and hundreds of Corporate business clients throughout the metropolitan Detroit Area.  He was recognized by his peers as one of the area’s most respected occupational medicine specialists by HOUR DETROIT magazine “Top Docs” ratings for 2005 and 2006.

• Specialty: Occupational Medicine, Internal Medicine 
• Hospital Privileges: Providence Hospital, Providence Park Hospital, St. John Hospital and Medical Centers, St. John Macomb Hospital, St. John Oakland Hospital, St. John River District Hospital
• Education: American University of the Caribbean
• Residency: Providence Hospital
• Board Ceritification: Internal Medicine

Lynn M. Donohue, MD
Dr. Donohue attended medical school at Wayne State University in Detroit Michigan. She completed Family Practice Residency at Providence Hospital and is board certified in Family Practice. She has been practicing Occupational Health since 1998. She also has experience in Urgent Care and Emergency Medicine and is certified as a medical review officer.

• Specialty: Family Practice. Occupational Health
• Hospital Privileges: St John Oakland Hospital, Providence Hospital, St. John Macomb Hospital
• Education: Wayne State University Medical School, Masters from Central Michigan University, BS from University of Michigan
• Residency: Providence Hospital
• Board Certification: Family Practice

Jayant B. Eldurkar, MD
Dr. Eldurkar is Board Certified in Occupational Medicine and Family Medicine and a Medical Review Officer through MROCC. He completed his residency in both disciplines from Wayne State University. Dr. Eldurkar practices the art of preventive medicine in an Occupational Medicine setting. Dr. Eldurkar teaches for the Department of Family Medicine at Wayne State University on various topics of Occupational and Environmental Medicine.

• Specialty: Occupational Medicine, Family Medicine 
• Hospital Privileges: St. John Hospital and Medical Center
• Education: Wayne State University
• Residency: Wayne State University
• Board Certification: Occupational Medicine

Natalia Filipof, MD

Dr. Filipof is Board Certified in both Internal Medicine and Pediatrics, with additional training in Dermatology. She has been in practice since 1998. She then went on to Butterworth Hospital in Grand Rapids, Mi. to complete a combined residency in Internal Medicine and Pediatrics.

• Specialty: Internal Medicine, Pediatrics, Occupational Medicine
• Hospital Privileges: St. John Hospital and Medical Center
• Education: Michigan State University of Human Medicine
• Residency: Butterworth and Devos Children's Hospital
• Board Certification: Internal Medicine and Pediatrics

Robert J. Kelman, MD
Dr. Kelman received his medical degree from Wayne State University School of Medicine. After a Transitional Residency at Providence Hospital, he completed his training in Emergency Medicine at LSU - Charity Hospital at New Orleans. Dr. Kelman is a Founding Member and Fellow of the American Academy of Emergency Medicine. Currently, Dr. Kelman works for Occupational Health Partners at Providence Hospital, and for the Emergency Department at St. John Macomb.

• Specialty: Emergency Medicine, Occupational Medicine
• Hospital Privileges: Providence Hospital, St. John Macomb Hospital
• Education: WSU Medical School
• Residency: Providence Transitional Residency, LSU-Charity Emergency Medicine Residency
• Board Certification: Emergency Medicine

Mark R. Rosenwasser, MD
Dr. Rosenwasser received his medical degree from the University of Michigan in Ann Arbor, Michigan. He completed his residency in Family Practice at Providence Hospital in Southfield, Michigan. He is board certified in emergency medicine and has been working in the field of Occupational Medicine since 1998. In addition, he is certified as a Medical Review Officer and as an Aviation Medical Examiner.

• Specialty: Occupational Medicine, Emergency Medicine
• Hospital Privileges: Providence Hospital
• Undergraduate and Medical Education: University of Michigan
• Residency: Providence Hospital
• Board Certification: Emergency Medicine

Jeff Collinson, MSA, PA-C
Jeff is a certified physician assistant accredited by the National Commission on Certification of Physician Assistants. He received his Bachelor Degree in Science from the University of Detroit Mercy and his Masters Degree in Administration from Central Michigan University. Jeff is a member of both the American and Michigan Academies of Physician Assistants. He is affiliated with Occupational Health Partners at St. John Macomb Hospital in Warren, Michigan. Jeff has 26 years experience in Occupational Medicine.

• Specialty: Occupational Health
• Hospital Privileges: St. John Macomb Hospital, St. John River District Hospital
• Education: University of Detroit Mercy, Central Michigan University
• Board Certification: National Commission on Certification of Physician Assistants

Nancy Duensing, RNC, MSN, CNP
Nancy is a Certified Nurse Practitioner, who received her master's degree from Wayne State University in Detroit, Michigan. She is a member of the Association of Occupational Health Professionals and American Association of Occupational Health Nurses. Nancy is affiliated with Occupational Health Partners at St. John Hospital and Medical Center, Detroit, Michigan.

• Specialty: Occupational Health
• Hospital Privileges: St. John Hospital and Medical Center
• Education: Wayne State University
• Board Certification: American Nurses Credentialing Center, Adult Primary Care

Susan Greiner, MS, PA-C
Susan is a certified physician assistant, who received her degree from Wayne State University Physician Assistant Studies Program in Detroit, Michigan. She is a member of the American Academy of Physician Assistants. Susan is affiliated with Occupational Health Partners at St. John River District Hospital in East China, Michigan, and is dedicated to providing quality healthcare to patients with work related injuries and illnesses.

• Specialty: Occupational Medicine
• Hospital Privileges: St. John River District Hospital
• Education: Wayne State University
• Board Certification: National Commission on Certification of Physician Assistants

Len Russo, PA-C
Len received his BA from the University of Michigan-Dearborn and his Physician Assistant degree from Mercy College of Detroit. He is a member of the American Academy of Physician Assistants and has worked in Occupational Health at Providence Hospital for 15 years.

• Specialty: Occupational Health
• Hospital Privileges: Providence Hospital, St. John River District Hospital
• Education: University of Michigan-Dearborn, Mercy College of Detroit
• Board Certification: National Commision on Certification of Physician Assistants

Melissa Schwartz, PA-C
Melissa is a Board Certified Physician Assistant accredited by the National Commission of Physician Assistants.
Melissa received her Bachelors Degree in Science from University of Detroit Mercy and Masters Degree in Science from University of Detroit Mercy. She is a member of the Michigan Academy of Physician Assistants and American Academy of Physician Assistants. She is on staff at St. John Detroit Riverview Hospital.

• Specialty: Occupational Medicine
• Education: University of Detroit Mercy
• Board Certification: National Commission on Certification of Physician Assistants

Karl Wagner, PA-C 

Karl is a board certified Physician Assistant accredited by the National Commission of Physician Assistants and is Past President of the American Academy of Physician Assistants in Occupational Medicine.  He received his BA degree from Wayne State University and his Physician Assistant  degree at Yale School of Medicine.  Karl has experience in Emergency Medicine and has specialized in Occupational and Environmental Medicine for the past 15 years at Providence Hospital.  He is board certified in Pain Management with the American Academy of Pain Management

• Specialty: Pain Management and Occupational Medicine
• Hospital Privileges: Providence Hospital
• Education: Wayne State University, Yale School of Medicine
• Board Certification: National Commission on Certification of Physician Assistants