GRCOP Physician Investigators

Please note! Because our member physicians may care for patients at more than one clinic or hospital, the addresses listed do not necessarily reflect their present location.

Battle Creek

Jeffrey Letzer, DO
(Medical Oncology)
Bronson Battle Creek
300 North Ave
Battle Creek, MI 49016
(269) 966-8660
Randy Mudge, MD
(Radiation Oncology)
Bronson Battle Creek
300 North Ave
Battle Creek, MI 49017
(269) 966-8056
Stephen Smiley, MD
(Medical Oncology)
Bronson Battle Creek
300 North Ave
Battle Creek, MI 49017
(269) 966-8660

Grand Rapids

Richard Axtell, MD
(Pediatric Hematology/Oncology)
Helen DeVos Children's Hospital at Spectrum Health
MC 085
100 Michigan NE
Grand Rapids, MI 49503
(616) 391-2086
Kevin Brader, MD
(Gynecologic Oncology)
Saint Mary's Health Care
200 Jefferson SE
Grand Rapids, MI 49503
(616) 685-6714
Chi Braunreiter, MD
(Pediatric Hematology/Oncology)
Helen DeVos Children's Hospital at Spectrum Health
MC 085
100 Michigan NE
Grand Rapids, MI 49503
(616) 391-2086
Brett Brinker, MD
(Medical Oncology)
Cancer & Hematology Centers of Western Michigan
Suite 3100
145 Michigan St. NE
Grand Rapids, MI 49503
(616) 954-9800
Martin Bury, MD
(Medical Oncology)
Cancer & Hematology Centers of Western Michigan
Suite 3100
145 Michigan St. NE
Grand Rapids, MI 49503
(616) 954-9800
Eric Buth, MD
(Radiation Oncology)
Spectrum Health
Lemmen-Holton Cancer Pavilion
145 Michigan St. NE
Grand Rapids, MI 49503
(616) 486-5750
Mark Campbell, MD
(Medical Oncology)
Cancer & Hematology Centers of Western Michigan
Suite 3100
145 Michigan St. NE
Grand Rapids, MI 49503
(616) 954-9800
Alan Campbell, MD
(Medical Oncology/Hematology)
Cancer & Hematology Centers of Western Michigan
Lemmen-Holton Cancer Pavilion
145 Michigan St. NE, Suite 3100
Grand Rapids, MI 49503
(616) 954-9800
Jamie Caughran, MD
(Surgery)
Saint Mary's Health Care
Comprehensive Breast Center
200 Jefferson Ave SE
Grand Rapids, MI 49503
(616) 685-6756
Mathew Chung, MD
(Surgical Oncology)
Spectrum Health Medical Group
Lemmen-Holton Cancer Pavilion
145 Michigan St. NE, Suite 5500
Grand Rapids , MI 49503
(616) 726-8540
Albert Cornelius, MD
(Pediatric Hematology/Oncology)
Helen DeVos Children's Hospital at Spectrum Health
MC 085
100 Michigan NE
Grand Rapids, MI 49503
(616) 391-2086
David Dickens, MD
(Pediatric Oncology)
Helen DeVos Children's Hospital at Spectrum Health
MC 085
100 Michigan NE
Grand Rapids, MI 49503
(616) 391-2086
Patrick Fabrizio, MD
(Radiation Oncology)
Spectrum Health
Lemmen-Holton Cancer Pavilion
145 Michigan St. NE, Suite 2200
Grand Rapids, MI 49503
(616) 486-5750
James Fahner, MD
(Pediatric Hematology/Oncology)
Helen DeVos Children's Hospital at Spectrum Health
MC 085
100 Michigan NE
Grand Rapids, MI 49503
(616) 391-2086
Thomas Gribbin, MD
(Medical Oncology)
Cancer & Hematology Centers of Western Michigan
The Lacks Cancer Center at Saint Mary's
250 Cherry St. SE
Grand Rapids, MI 49503
(616) 685-6714
Philip Hoekstra, MD
(Urology)
Spectrum Health Medical Group
Suite 313
4069 Lake Drive SE
Grand Rapids, MI 49546
(616) 774-9333
Stephen Huang, MD
(Medical Oncology)
Cancer & Hematology Centers of Western Michigan
The Lacks Cancer Center at Saint Mary's
250 Cherry St. SE
Grand Rapids, MI 49503
(616) 685-6714
Richard Kahnoski, MD
(Urology)
Spectrum Health Medical Group
Suite 313
4069 Lake Dr. SE
Grand Rapids, MI 49546
(616) 774-9333
James Kane, Jr, MD
(Radiation Oncology)
Saint Mary's Health Care
200 Jefferson SE
Grand Rapids, MI 49503
(616) 685-6218
Brian Kastner, MD
(Radiation Oncology)
Spectrum Health
Lemmen-Holton Cancer Pavilion
145 Michigan St. NE
Grand Rapids, MI 49503
(616) 486-5750
Beth Kurt, MD
(Pediatric Hematology/Oncology)
Helen DeVos Children's Hospital
Helen DeVos Children's Hospital @ Spectrum Health
100 Michigan St. NE
Grand Rapids, MI 49503
(616) 391-2086
Brian Lane, MD
(Urology)
Spectrum Health Medical Group
Suite 313
4069 Lake Drive SE
Grand Rapids, MI 49546
(616) 459-4171
Edward Lee, DO
(Radiation Oncology)
Spectrum Health - Reed City Campus

4499 220th Ave
Reed City, MI 49677
(231) 832-5817
Martin Luchtefeld, MD
(Colorectal Surgery)
Spectrum Health Medical Group - Ferguson Clinic
Suite 205
4100 Lake Drive SE
Grand Rapids, MI 49546
(616) 356-4100
Aly Mageed, MD
(Pediatric Hematology/Oncology)
Helen DeVos Children's Hospital at Spectrum Health
MC 185
100 Michigan St NE
Grand Rapids, MI 49503
(616) 391-9127
Michael Mahacek, MD
(Radiation Oncology)
Spectrum Health
Lemmen-Holton Cancer Pavilion
145 Michigan St. NE
Grand Rapids , MI 49503
(616) 486-5750
Marianne Melnik, MD
(Surgical Oncology)
Spectrum Health Medical Group - Breast Services
Suite 4400
145 Michigan St. NE
Grand Rapids, MI 49503
(616) 486-6333
Deanna Mitchell, MD
(Pediatric Hematology/Oncology)
Helen DeVos Children's Hospital at Spectrum Health
MC 085
100 Michigan NE
Grand Rapids, MI 49503
(616) 391-2086
Timothy O'Rourke, MD
(Medical Oncology/Hematology)
Cancer & Hematology Centers of Western Michigan
Suite 3100
145 Michigan St. NE
Grand Rapids, MI 49503
(616) 954-9800
Leon Oostendorp, MD
(General Surgery)
Spectrum Health Medical Group
Suite 4400
145 Michigan St. NE
Grand Rapids, MI 49503
(616) 456-8613
Gilbert Padula, MD
(Radiation Oncology)
Saint Mary's Health Care
200 Jefferson Ave SE
Grand Rapids, MI 49503
(616) 685-6218
Lawrence Pawl, MD
(Medical Oncology)
Medical Specialty Associates, PC
Suite 301
515 Michigan Street NE
Grand Rapids, MI 49503
(616) 456-8115
Jane Pettinga, MD
(Surgical Oncology)
Spectrum Health Medical Group - Breast Services
Suite 4400
145 Michigan St. NE
Grand Rapids, MI 49503
(616) 486-6333
William Scott, MD
(Medical Oncology)
Cancer & Hematology Centers of Western Michigan
Suite 3100
145 Michigan St. NE
Grand Rapids, MI 49503
(616) 954-9800

Grand Rapids

Sharon Smith, MD
(Pediatric Hematology/Oncology)
Helen DeVos Children's Hospital
Helen DeVos Children's Hospital @ Spectrum Health
100 Michigan St. NE
Grand Rapids, MI 59503
(616) 391-2086

Grand Rapids

Amy Vander Woude, MD
(Medical Oncology)
Cancer & Hematology Centers of Western Michigan
145 Michigan St. NE
Suite 3100
Grand Rapids, MI 49503
(616) 954-9800
Wayne VanderKolk, MD
(Surgery)
Spectrum Health Medical Group
Suite 210
3230 Eagle Park Drive NE
Grand Rapids, MI 49525
(616) 456-8613
Charles Wilkinson, MD
(Radiation Oncology)
Saint Mary's Health Care - Radiation Oncology
200 Jefferson SE
Grand Rapids, MI 49546
(616) 685-6218
Kathleen Yost, MD
(Medical Oncology)
Cancer & Hematology Centers of Western Michigan
Suite 3100
145 Michigan St. NE
Grand Rapids, MI 49503
(616) 954-9800

Muskegon

Kathryn Alguire, MD
(Medical Oncology)
Cancer & Hematology Centers of Western Michigan
Johnson Family Center for Cancer Care
1440 E. Sherman Blvd, Suite 200
Muskegon, MI 49444
(231) 737-3469
Eric Batts, MD
(Medical Oncology)
Cancer & Hematology Centers of Western Michigan
Johnson Family Center for Cancer Care
1440 E. Sherman Blvd, Suite 200
Muskegon, MI 49444
(269) 672-2008
Nina Johnson, MD
(Radiation Oncology)
Johnson Family Center for Cancer Care
1440 E. Sherman Blvd, Suite 300
Muskegon, MI 49444
(269) 672-2008
Hikmet Sipahi, MD
(Medical Oncology)
Cancer & Hematology Centers of Western Michigan
Johnson Family Center for Cancer Care
1440 E. Sherman Blvd, Suite 300
Muskegon, MI 49444
(231) 737-3469

Traverse City

Michael Aja, MD
(Radiation Oncology)
Munson Medical Center - Biederman Cancer Center
1105 Sixth St
Traverse City, MI 49684
(231) 935-7100
Douglas Brown, MD
(Radiation Oncology)
Munson Medical Center - Biederman Cancer Center
1105 Sixth St
Traverse City, MI 49684
(231) 935-7100
David Gordon, MD
(Medical Oncology)
Hematology/Oncology, PC
4960 Skyview Court
Traverse City, MI 49684
(231) 947-3070
David Heimburger, MD
(Radiation Oncology)
Munson Medical Center - Biederman Cancer Center
1105 Sixth St
Traverse City, MI 49684
(231) 935-7100
Lisa Hughes, DO
(Medical Oncology)
Traverse Area Hematology Oncology
Suite 2
5041 North Royal Dr
Traverse City, MI 49684
(231) 935-0700
Peter Kohler, MD
(Medical Oncology)
Traverse Area Hematology Oncology
Suite 2
5041 North Royal Drive
Traverse City, MI 49684
(231) 935-0700
Richard Kosinski, MD
(Hematology/Onc)
Traverse Area Hematology Oncology
Suite 2
5041 North Royal Dr
Traverse City, MI 49684
(231) 935-0700
David Michelin, MD
(Gynecologic Oncology)
Gynecologic Oncology
315 North Division, Ste. 220
Traverse City, MI 49684
(231) 935-0971
Robert Prust, MD
(Radiation Oncology)
Munson Medical Center - Biederman Cancer Center
1105 Sixth St
Traverse City, MI 49684
(231) 935-7100
Judith Ramsdell, MD
(Medical Oncology)
Private Practice
Suite 1
5041 Royal Dr
Traverse City, MI 49684
(231) 935-0777
Robert Schwert, DO
(Medical Oncology)
Hematology/Oncology PC
4960 Skyview Ct
Traverse City, MI 49684
(231) 947-3070