Memorial Medical Associates provides physician practice management for over 20 employed medical practices in the greater Shiawassee County area.

Amy Wallace, DOAmy Blaising-Wallace, DO,  serves as Vice President of Memorial Medical Associates (MMA), Memorial Healthcare’s medical group. In this role, Dr. Wallace collaborates with the Memorial Healthcare leadership team in providing oversight of the system-wide performance of Memorial Medical Associates. Dr. Wallace has been an active medical staff member of Memorial Healthcare since 2004 and continues to practice medicine at Perry Family Practice.

Our employed physicians are:


Arnold Medical Clinic
Anthony Patsy, DO, Krisha Horger, FNP-BC, and Andrea Miller, FNP-BC

Chesaning Family Medicine
Carolyn Ebert, MD; Thomas Teal, MD; Marcus Feldpausch, PA-C

Durand Family Health Center
Richard Rankl, MD; Gerri Hagadon-Szakal, DNP, FNP-BC, FPMHNP

Laingsburg Primary Care
Barbara Gurden, DO 
Jonathan King, MD

Memorial Family Medicine
Carol Vorenkamp, DO

Northside Family Medicine
Timothy Oliver, MD and Marcos Iza, MD
Kristina Yaklin, DNP

Ovid Elsie Family Health Care
David Huff, DO

Ovid Elsie Primary Care
Narender Thatikonda, MD
Sara Deringer-Kohorst, MSN, PA-C

Perry Family Practice
Usman Ahmed, MD and Amy Blaising-Wallace, DO
Mary Mankey, PA-C and Tamara Platner, PA-C

Roy F. Small, DO

Shiawassee Family Medicine
Adriana Raus, MD
Wanda Iza, MD
Diana Hayes, MSN, CFNP, CNS


Owosso Gastroenterology Associates
Catherine Kerschen, DO, FACOI; Lisa LePain, DO, FACOI;
Marcia Skjaerlund, DO; William Weatherhead, DO, FACOI
Maria Reed, PA-C and Danielle Kramer, PA-C


Memorial Surgical Associates
Richard Schulz, DO, MBA, FACOS
Thomas Smith, DO

Owosso Surgical Associates
Walid Azmeh, MD 
Marie Spiess, PA-C, RVT, CWS
Suzanne Law, DO, RVT, CWS


Internal Medicine Associates of Owosso
Oscar Macal, MD and Antonio Santiago, MD

Owosso Internal Medicine
Elena Alawa, DO
Stacey Carr, NP-C


Memorial Neurological Institute and Center for Multiple Sclerosis
Rany Aburashed, DO; Margaret Frey, DO; and Cara Leahy, DO


Health Partners for Women
Mario Chaves, MD and Nicole Peel, MSN, WHNP-BC


Memorial Occupational Health Center
Carol Vorenkamp, DO


Mid-Michigan Orthopedics
Ashraf Elbanna, MD, Joseph Palazeti, DO; Michael Schmidt, DO; 
Rhonda Whelan, DO and Michael Smith, PA-C

OTOLARYNGOLOGY (Ear, Nose & Throat & Hearing Services)

Red Cedar Ear, Nose & Throat (ENT & Hearing Services)
Shannon Radgens, DO
Michael Nelson, PA-C and Diane Zuckschwerdt, MA, CCC-A


Memorial Pediatric Clinic
Michael Kramer, DO
Bethany Pavon, CFNP

Pediatric & Adolescent Services
Maria Budai, MD, FAAP 


Mid-Michigan Orthopedics
Gary Branch, DO


Memorial Urology
Mandell Bookman, MD

Memorial Medical Associates also provides oversight for Memorial Healthcare's urgent care practices.

Memorial Medical Associates
1975 W. M-21
Owosso, MI 48867