The MSU Health Care Pediatric Pulmonology clinic located at 4660 S Hagadorn Road, East Lansing will close as of June 1, 2025.
We are pleased to inform you that Dr. Ryan Thomas and Cassandra Grimes, NP, will be practicing at their new location with Corewell Health Pediatric Pulmonology - Lansing Pediatric Specialty Care Clinic beginning July 2025.
Our goal is to ensure this transition is as seamless as possible while keeping your child’s care uninterrupted. Below, you’ll find all the essential details about what’s happening, next steps, and additional resources available to support you during this change.
Starting in July 2025, you may choose to continue your child’s care with Dr. Thomas and Cassandra Grimes at their new location:
Corewell Health Pediatric Pulmonology - Lansing Pediatric Specialty Care Clinic
Should you choose to follow your current providers to Corewell Health, their team will be ready to welcome you and continue delivering the care and attention your child deserves. For gap care between now and July, 2025, please contact your primary care physician.
We respect your right to choose where your child receives care. Below are the steps you can take to ensure a smooth transition, whether you stay with your current providers or opt for a new one.
To continue care with Dr. Thomas and Cassandra Grimes at Corewell Health, please complete the medical records release form. This allows us to transfer your records to their new location.
If you wish to transfer care to a different provider, complete a medical records release form for your chosen physician.
You can request a copy of your medical records for your personal use. Submit medical records requests through our online chat, patient portal, email or fax.
To make the transition as smooth as possible, here are some important points to consider about your insurance and medical referrals if you choose to follow your current providers at Corewell Health Pediatric Pulmonology.
Taking these early steps will help prevent interruptions in your child’s medical care coverage.
Our Appreciation and Support
This transition marks the end of a significant chapter at MSU Health Care Pediatric Pulmonology Clinic. We extend our deepest gratitude for the trust you have placed in us to care for your child, and we remain committed to making your transition as smooth as possible.
If you have any questions or need additional assistance, please do not hesitate to contact us at 517.884.8600 until June 30, 2025.
We are here to help and wish your child continued health and wellness with their medical care.
Yes, Dr. Ryan Thomas and Cassandra Grimes, NP, will begin practicing at Corewell Health Pediatric Pulmonology - Lansing Pediatric Specialty Care Clinic starting July 2025.
You can request copies of your child’s medical records through MSU Health Care by:
You have the option to either:
All appointments at the MSU Health Care Pediatric Pulmonology Clinic must be completed by June 1, 2025.
If you are receiving biologic injection treatments, those will continue at MSU through June 2025—please schedule as soon as possible by calling 517.884.8600.
MSU Health Care Pediatric Pulmonology will remain available to assist you through June 30, 2025.
This includes:
Yes. Prescription refill requests will be honored through June 30, 2025, by MSU Health Care.
After that date, please request refills through Corewell Health or your new provider.
You’ll need to confirm directly with your insurance provider.
We recommend:
You may contact MSU Health Care Pediatric Pulmonology at 517.884.8600 through June 30, 2025.
After that date, please reach out directly to Corewell Health at 517.484.0004 for ongoing care.
The closure is permanent. MSU Health Care is closing the Pediatric Pulmonology service line and will not be reopening it at another location.
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MSU Health Care Specialty and Pediatrics