Cathy Lay, MD

Urgent Care

Related Programs
Member of St. Peter's Medical Group

About Me

Cathy Lay, MD is originally from South Carolina. She holds a degree in Electrical and Computer Engineering from Clemson University and worked several years as an engineer for the military. She then earned her medical degree from the Medical University of South Carolina in Charleston, S.C. 

She completed her family medicine residency and internship at the Medical University of South Carolina - Trident Hospital.  She is board-certified in family medicine.  She currently works at the St. Peter's Medical Group Urgent Care.

Dr. Lay is an avid sailor and a wimpy skier, according to her children.  She enjoys hiking and fishing with her husband and three dogs, and in general, enjoys anything that gets her outdoors in Montana.

Education & Training

Medical School

Medical University of South Carolina


Trident / MUSC Family Medicine Residency Program

Board Certifications

American Board of Family Medicine


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Patients are expected to furnish all the necessary health insurance information and sign the medical release and insurance assignment authorizations. St. Peter’s Health will submit complete insurance claims on the appropriate forms for the charges recorded. 

Keep in mind that insurance is a contract between the patient and his or her insurance company and that St. Peter’s Health is acting only as a billing agent. St. Peter’s Health cannot pursue payment from insurance carriers in the event of non-payment or benefit denials. If a patient’s insurance carrier has not submitted payment within 30 days of billing, St. Peter’s Health expects the patient to pay the balance in full. Patients receive a monthly statement showing any account activity and the remaining balance due.