William D. Heggen, MD Board Certification: Radiology Scope of Practice: Diagnostic Radiology and Breast Imaging Medical School: University of Iowa, College of Medicine Residency: Brooke Army Medical Center, San Antonio, TX Interests: Family, hiking, travel, and learning to play golf How to reach him: Grinnell Regional Medical Center • 210 Fourth Ave.• Grinnell, Iowa 50112 • 641-236-2358 or cell phone 515-208-1124 • www.iowaradiology.com Joined GRMC: 2003
	Stuart K. Lehr, MD Board Certification: Radiology Scope of Practice: Diagnostic Radiology Medical School: University of Iowa, College of Medicine Residency: University of Iowa Hospitals and Clinics Interests: Fitness activities, auto racing and restoration, and traveling with his family How To Reach Him: Grinnell Regional Medical Center• 210 Fourth Ave. • Grinnell, Iowa 50112 • 641-236-2358 or cell phone 515-208-1121 Joined GRMC: 2003
	Marvin D. Walker, DO Board Certification: Radiology Scope of Practice: Cross-Sectional Radiology Imaging Medical School: Des Moines University, Osteopathic Medical Center Residency: Brooke Army Medical Center, San Antonio, TX Interests: Family, cooking, and tennis How to reach him: Grinnell Regional Medical Center • 210 Fourth Ave.• Grinnell, Iowa 50112 • 641-236-2358 or cell phone 515-208-1121 • www.iowaradiology.com Joined GRMC: 2003