Mercy Health Saint Mary's. 616-685-5444. Mercy Health Muskegon. 231-672-4911. Mercy Health Physician Partners Grand Rapids and Holland. 616-685-1401. Mercy Health Physician Partners Muskegon and the Lakeshore. 231-672-4997. Contact Us By Online Form. Begin Form. For Patients. Billing and Insurance; Medical Records; Patient Portal; Patient ....