Memorial Healthcare Surgical Associates

818 West King Street
Suite 201 (Second Floor)
Owosso MI 48867

Phone: 989-723-3168

Fax: 989-725-2962

Monday: 9:00 AM - 5:00 PM
Tuesday: 9:00 AM - 5:00 PM
Wednesday: 9:00 AM - 5:00 PM
Thursday: 9:00 AM - 5:00 PM
Friday: 9:00 AM - 5:00 PM

818 West King Street, Owosso MI 48867

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Welcome to Memorial Healthcare Surgical Associates. General surgery specialists Gregory Flermoen, MD, FACS; Joseph E. Testa, DO, FACS, FACOS; Sasha Spencley, DO; Erik Harp, PA-C and Miranda Weaver, MSN, APRN, AGNP-C perform a wide variety of surgical services. In addition to abdominal surgery of the internal organs such as the intestines, stomach, small bowel, colon, liver and gallbladder, our surgeons also offer a variety of breast surgery services and sentinel node biopsy. Most surgeries are performed robotically in order to minimize healing time. Minimally invasive procedures often result in less scarring and can significantly reduce pain experienced after surgery.

Memorial Healthcare Wound Management, led by Marie Spiess, PA-C, RVT, CWS, is located in Memorial Healthcare Surgical Associates which specializes in providing the latest treatment options and technology in advanced wound care services.

Memorial Healthcare Surgical Associates provides services to patients ages 3 and over. We are committed to providing caring and compassionate services before, during and after surgery and work very closely with the region’s primary care providers to deliver outstanding customer service to patients referred to us for consultation and/or surgery.

New Patients Welcome. Call Today!



  • Abdominal surgery
  • Breast surgery and sentinel node biopsy
  • Colonoscopy (biopsy, polypectomy)
  • Colorectal surgery
  • EGD (upper GI endoscopy)
  • Hernia surgery
  • Lacerations
  • Lesion removal

Many surgeries can be performed using minimally invasive surgery techniques which can significantly reduce scarring, result in less pain and reduce overall healing time.

Monday – Friday 8:30 am – 5:00 pm

Click here for a Patient-Centered Medical Home brochure.

Memorial Healthcare Surgical Associates is an employed physician practice of Memorial Medical Associates, a department of Memorial Healthcare.