Dr. Charles R. Barker, Jr.,
Family Practice

Our staff prides itself on great patient care. We treat each patient with respect and dignity.

This website offers a lot of information on our practice. But please never hesitate to pick up the phone and call us for more information. Thank you for visiting.


Charles R. Barker, Jr.

“Charles R. Barker, Jr. is a Board Certified Family Practice physician. He attended Michigan State University where he received a Bachelor’s of Science Degree. He received his Doctor of Osteopathy Degree from the College of Osteopathic Medicine in Kansas City, Missouri.

Dr. Barker completed his Family Practice Residency, with an emphasis of Primary Care Sports from Metropolitan Hospital in Grand Rapids, Michigan.

His special interests include sports medicine, diabetes, osteopathic manipulation and wellness care. Dr. Barker is a member of the American Osteopathic Association and the American College of Osteopathic Family Practice.


  • Michigan State University, East Lansing, Michigan, BS in Physiology, 1991 – 1992

  • University Of Health Science, College of Osteopathic Medicine, Kansas City, Missouri, Doctor of Osteopathy, 1992 – 1996
  • Internship/ Residency: Metropolitan Hospital, Grand Rapids, Michigan, Family Practice Special Emphasis in Primary Care Sports Medicine, 1996 – 1999
  • Committees: OMT Review Committee, Metropolitan Hospital July 1998 -July 1999
  • Lecture Series: Osteopathic Manipulation for the Primary Care Physician, Metropolitan Hospital, April 1998-June-1999
  • Special Interests: Sports Medicine, Osteopathic Manipulation
  • Board Certification: Board Certified – Family Practice PALS, ACLS, ATLS
  • Committees: Executive Staff At Sheridan Community Hospital Secretary / Treasurer
  • Affiliations: Member Of AOA, ABOPFP, MOA

Susan Strotheide, PA-C

Susan Strotheide received her Bachelors of Science Degree in Medicine from Western Michigan University, graduating Cum Laude. Prior to coming to Charles R. Barker, Jr. Family Practice, Susan was employed as a Physician’s Assistant in Spectrum Health Urgent Care Centers providing evaluation and treatment for a variety of medical trauma issues. She also worked as a Registered Nurse in the Butterworth Hospital Emergency Department.


  • 2001-2009 : Spectrum Health, Grand Rapids, Michigan.
  • January, 2004-present : Physician Assistant in the Spectrum Urgent Care Centers, performing initial evaluation and treatment for a variety of medical and minor trauma issues.
  • July, 2001 – March 2004 : Registered Nurse in the Emergency Department at Butterworth Hospital, an inner city 55 + bed Level I trauma center.
  • 2006: West Michigan Center for Family Health, Grand Rapids, Michigan. Physician Assistant in a family practice clinic, performing health maintenance, disease management and adult care services for a predominantly under insured population.
  • 2001-2003: Military Entrance Processing Station, Lansing, Michigan. Physician Assistant in the Medical Section, performing history and physical examination on candidates for military service.
  • February, 2002 – March, 2002 : Haslett Redi Care, Haslett, Michigan. Worked full time as a Staff Physician Assistant in a busy urgent care setting evaluating and treating patients. Averaged 40-60 Patients per shift.
  • 1998-2001: Health Support Corporation, Owosso, Michigan. Physician Assistant in two different family practice clinics. My client base grew by about 25% in the 2000 fiscal year. Also worked part time in the newly formed Perry Urgent Care as a mid-level practitioner.
  • 1986 – 1998: Sparrow Health System, Lansing, Michigan.
  • 1994 – 1998: Physician Assistant. Regional Cancer Center. Position entailed managing the adult inpatient clientele for Multiple Medical Oncologists. Responsibilities included patient admissions and discharges, daily inpatient medical management, pain management, palliative care, consultation, and the initiation and management of chemotherapy regiments.
  • 1986-1994: Registered Nurse. Performed a wide range of duties, both in the Emergency Department and the Regional Burn Center.
  • 1987-1989: Eaton Rapids Community Hospital, Eaton Rapids, MI. Worked per diem as a RN in a rural Emergency Department.
  • 1983-1986 : Mecosta County General Hospital, Big Rapids, MI.

Education :

1992-1994 : Western Michigan University , Kalamazoo, MI. Physician Assistant Program, BS Medicine, Graduate Cum Laude.

1991-1992 : Grand Rapids Community College, Grand Rapids, MI. Prerequisite Studies for PA Program.

1998-1986 : Lansing Community College, Lansing, MI. CME’s Such As ACLS Provider And Instruction Certificates

1979-1983: Michigan State University, East Lansing. MI. BS Nursing.

1978-1979: Grand Rapids Junior College, Grand Rapids, MI. General Pre-Nursing Studies

1976-1978 : Creston High School, Grand Rapids. MI. High School Diploma

Licenses And Certificates

NCCPA Certification

Physician Assistant License

Registered Nurse License, State Of Michigan

ACLS Provider, Exp 2007

Madisyn L Bush, PA-C

Madisyn Bush received both her Bachelors of Science Degree in Dietetics and her Master of Science, Physician Assistant Studies from Central Michigan University. Prior to coming to Charles R. Barker, Jr. Family Practice, Madisyn completed Physician Assistant Student Clerkships at United Women’s Health and Wellness Center, Greenville, MI, Dr. Domenico Ausiello MD, Family Practice, Greenville, MI, Charles R. Barker, Jr. Family Practice, Belding, MI and Dr. Kevin O’Connor DO, Greenville, MI.


Physician Assistant Student ClerkshipsAugust 2011-July 2012

Family Practice (6 weeks)

Dr. Charles Barker, Belding, MI
Performed comprehensive history and physical exams of pediatric and adult patients, documented in electronic medical record, performed in-office procedures such as Pap smears, and skin tag removal.

Obstetrics & Gynecology (6 weeks)

United Women’s Health and Wellness Center, Greenville, MI
Completed yearly physical exams, including breast exams, pelvic exams, and Pap smears; assisted in routine obstetric office visits as well as vaginal and cesarean deliveries; assisted in gynecological surgeries such as D&C and hysterectomy.

Internal Medicine (6 weeks)

United Memorial Hospital Internal Medicine, Greenville, MI
Completed hospital rounds daily. Evaluated patients and developed treatment plans for a variety of different cases including congestive heart failure, COPD exacerbation, pancreatitis, and small bowel obstructions. Performed hospital admissions as well as assisted with cardiac stress tests.

Psychiatry (6 weeks)

Dr. Domenico Ausiello MD, Family Practice, Greenville, MI
Evaluated and treated patients in a family practice and long term care settings; managed common psychiatric illnesses such as depression, anxiety, and ADHD.

Emergency Medicine (6 weeks)

United Memorial Hospital Emergency Department, Greenville, MI
Completed focused H&Ps in emergency department setting; performed laceration repair, IV placement, radiology and ECG interpretation, Foley catheter placement, wound irrigation/dressing, pre-admission work-up; assisted with ACLS care.

Pediatrics (6 weeks)

Dr. Charles Barker DO, Belding, MI
Provided general care of pediatric population, including well-child exams, sports physicals, ADHD exams, and routine sick visits.

Elective – Family Practice (5 weeks)

Dr. Domenico Ausiello MD, Family Practice, Greenville, MI (6 weeks)
Completed yearly physicals, obstetric visits, routine sick visits; managed diabetes, hypertension, COPD; performed in-office procedures such as joint injections, lesion removal, endometrial biopsy. Managed patient care in long-term care setting.

Surgery (5 weeks)

Dr. Kevin O’Connor DO, Greenville, MI
Assisted in general surgical procedures including first assist in cholecystectomy, hernia repairs, mastectomy with axillary dissection, mediport placement, appendectomy, and colectomies. Cared for patients post-operatively in both outpatient and hospital settings. Performed in office evaluation and procedures including skin lesion and lipoma removal.

Additional Clinical Experience

Physician Assistant Student Mentorship, performed hands-on patient care as assigned one day per week.

August 2010-July 2011
Nursing Assistant

Isabella County Medical Care Facility
January 2009-April 2010

Education :

July 2012: Central Michigan University, Mount Pleasant, MI: Master of Science, Physician Assistant Studies

May 2012: Central Michigan University , Mount Pleasant, MI: Bachelor of Science, Dietetics


2011 Advanced Cardiac Life Support

Pediatric Advanced Life Support

2010 BLS for Healthcare Providers

Professional Organizations

2010-present Michigan Academy of Physician Assistants

2010-presentAmerican Academy of Physician Assistants