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Visiting Specialty Clinic
210 4th Ave., Grinnell
641-236-2925

Visiting Specialists
Please contact GRMC’s Visiting Specialty Clinic by e-mail or by calling 641-236-2925 for information on these specialists. (Inital appointments should be scheduled through a family physician or in the case of Dr. Davison, your optometrist.)
Allergy/Immunology/Pulmonology | Audiology | Cardiology | Dermatology | ENT | Neurology | Oncology | Ophthalmology | Perinatology | Physical Medicine and Rehabilitation | Pulmonology
Allergy/Immunology/Pulmonology
Michael M. McCubbin, MD
Board Certification: Allergy, Immunology, Pediatic Pulmonology, and Sleep Medicine
Scope of Practice: Allergy/Immunology/Pulmonology/Sleep Medicine
Affiliation: Private practice, Michael McCubbin, MD, PC
How to reach him: Michael McCubbin, MD, PC • 641-621-1487
Audiology
Dotty J. Walters, AuD
Scope of Practice: Audiology
Affiliation: Woodard Hearing Services
How to reach her: Woodard Hearing Services • 641-236-5650 
Dean J. Kayser, AuD
Scope of Practice: Audiology
Affiliation: Kayser Hearing Aid and Audiology
How to reach her: Kayser Hearing Aid and Audiology • 641-236-6676 
Cardiology
Michael G. Kienzle, MD
Board Certification: Internal Medicine and Cardiovascular Diseases
Scope of Practice: Cardiology
Affiliation: University of Iowa Health Care
How to reach him: University of Iowa Health Care • 877-891-5350
Allan P. Latcham
Board Certification: Cardiology and Internal Medicine
Scope of Practice: Cardiology
Affiliation: Iowa Heart Center
How to reach him: Iowa Heart Center • 888-591-9247 
David W. McAllister, DO
Board Certification: Cardiology and Interventional Cardiology
Scope of Practice: Coronary and Peripheral Vascular Intervention
Affiliation: Iowa Heart Center
How to reach him: Iowa Heart Center • 888-591-9247 
Mark D. McGaughey, MD
Board Certification: Cardiology and Interventional Cardiology
Scope of Practice: Clinical and Interventional Cardiology, and specializing in Valvuloplasty
Affiliation: Iowa Heart Center
How to reach him: Iowa Heart Center • 888-591-9249 
Teresa Sieck, PA-C
Board Certification: Physician Assistant
Scope of Practice: Cardiology
Affiliation: Iowa Heart Center
How to reach her: Iowa Heart Center • 515-633-3600 
Dermatology
Hobart W. Walling, MD, PhD
Scope of Practice: Dermatology
Affiliation: Town Square Dermatology
How to reach him: GRMC Visiting Specialty Clinic • 641-236-2925
Ear, Nose, and Throat
Jeremy D. Vos, MD
Board Certification: Otolaryngology
Scope of Practice: Ear, nose, throat, and plastic surgery
Affiliation: Otologic Medical Services
How to reach him: Otologic Medical Services • 800-642-6217
Neurology
Edward A. Aul, MD
Board Certification: Neurology
Scope of Practice: Neurology
Affiliation: University of Iowa Healthcare
How to reach him: University of Iowa Healthcare• 319-356-2586 or for scheduling 877-891-5350
Oncology
Steven P. Heddinger, MD
Board Certification: Internal Medicine
Scope of Practice: Oncology
Affiliation: Medical Oncology and Hermatology Associates
How to reach him: GRMC Visiting Specialty Clinic • 641-236-2925 
Ophthalmology
James A. Davison, MD
Board Certification: Ophthalmology
Scope of Practice: Cataract and Refractive Surgery
Affiliation: Wolfe Clinic
How to reach him: Wolfe Clinic • 641-754-6200 
Physical Medicine and Rehabilitation
Marvin M. Hurd, MD
Board Certification: Physical Medicine and Rehabilitation
Scope of Practice: Physical Medicine and Rehabilitation
Affiliation: Private practice, Marvin Hurd, MD
How to reach him: GRMC Visiting Specialty Clinic • 641-236-2925 
Perinatology
Neil Mandsager, MD, FACOG
Board Certification: Obstetrics-Gynecology and Maternal-Fetal Medicine
Scope of Practice: Obstetrics-Gynecology and Maternal-Fetal Medicine
Affiliation: Perinatal Center of Iowa
How to reach him: GRMC Visiting Specialty Clinic • 641-236-2925 
Pulmonology/Sleep Disorders
Steven K. Zorn, MD
Board Certification: Pulmonary Disease
Scope of Practice: Pulmonology
Affiliation: Iowa Sleep Disorders Center
How to reach him: GRMC Visiting Specialty Clinic • 641-236-2925