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MyChart is an Electronic Health Record available to patients of Mercy Medical Partners (MMP) physicians that allows you to access your health information and communicate with your doctor through the internet. Click here to search our MMP directory of physicians.


As a service to the community and our patients Mercy provides the following physician finder. The Physician Referral Service is provided at no cost. All physicians are current and active participants in the Mercy Health System PHO, HealthSpan, or Mercy Employee PPO (Tier I) network. In addition, each participant must be a member or affiliate in good standing with a medical staff of a hospital affiliated with Mercy or an employed or contracted medical care provider affiliated with Mercy. Participants may not be employed by a competing health system that does not further the business interests of Mercy.
John A. Winder, MD

Specialty: Allergy, Immunology, Pediatric
Gender: Male

Dr. Winder & Associates

5860 Alexis Rd., Suite B

, OH 43560
Phone: 419-885-5755

Fax: 419-885-4493

Office Hours: Call for office hours.

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Mercy Defiance Clinic

1400 E. Second St.

, OH 43512
Phone: 419-783-3200

Fax: 419-784-0929

Office Hours: Call for office hours.

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Medical School:
West Virginia University School of Medicine
University of Michigan Medical Center, Ann Arbor, MI
Childrens Asthma Research Institute and Hospital, The National Asthma Center, Denver, CO
Board Certification:
American Board of Allergy & Immunology, American Board of Pediatrics
Insurance Accepted:
Call the office for a complete listing.
Languages Spoken:
Years in Practice:
Clinical Interests:
Pediatrics, Immunology
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