Our Services

Our Adult Primary Care provides comprehensive healthcare for adults aged 18 and up. We focus on preventive screenings, managing chronic conditions, diagnosing and treating acute illnesses, and coordinating care with specialists to maintain optimal health.

We provide medically supervised hormone replacement therapy for men and women experiencing hormone imbalances. After a thorough evaluation and lab testing, individualized treatment plans are created to restore balance, improve energy, and support overall health.

Whether you’re managing hot flashes, mood changes, low energy, or experiencing low testosterone, fatigue, or reduced strength, our hormone replacement therapy programs are designed to restore balance, improve vitality, and support long-term health—with care tailored to your needs.

We offer a comprehensive approach to weight loss, including access to brand name and compounded GLP-1 prescriptions.

Call today to schedule an appointment with Kirsten Oosterbaan, PA-C.

  • Monday - 8:00 am - 4:00 pm

    Tuesday - 8:00 am - 5:00 pm

    Wednesday - 8:00 am - 4:00 pm

    Thursday - Limited availability

    Friday - 8:00 am - 12:00 pm

  • Phone: (616)221-4302

    Fax: (616)232-2034

    Email: office@heartlandprimarycaremi.com

  • Heartland Primary Care PLLC

    123 E Cass St

    Greenville, MI 48838

Group of five women, four wearing black scrubs and one in a white lab coat, standing in front of a brick wall, smiling at the camera.