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Summary
Dr. Larry Johnston is a gastroenterologist and internal medicine physician who earned his Doctor of Osteopathy degree from Oklahoma State University Center for Health Sciences College of Osteopathic Medicine. With 11 years of experience in practice, he brings expertise in both digestive health and comprehensive internal medicine care to his patients.
Dr. Johnston practices at Mary Greeley Medical Center and McFarland Clinic PC in Ames, Iowa, where he is affiliated with Mary Greeley Medical Center and Jack C Montgomery VA Medical Center. His clinical focus includes treating colon polyps and managing obesity concerns, including pediatric obesity cases. He performs lower gastrointestinal endoscopy procedures and colonoscopies with sedation to help diagnose and treat digestive conditions.
Dr. Johnston practices at Mary Greeley Medical Center and McFarland Clinic PC in Ames, Iowa, where he is affiliated with Mary Greeley Medical Center and Jack C Montgomery VA Medical Center. His clinical focus includes treating colon polyps and managing obesity concerns, including pediatric obesity cases. He performs lower gastrointestinal endoscopy procedures and colonoscopies with sedation to help diagnose and treat digestive conditions.
Overview based on verified provider data
Quick Facts
- accepting new patients
- 11 years of experience
- Oklahoma State Univ Center For Health Sciences College Of Osteopathic Med
- 2 specialties
- 1 area of expertise
- 2 hospital affiliations
- 2 office locations
- Male
Office Locations
Dr. Larry La Verne Johnston has 2 locationsMcfarland Clinic Pc
1215 Duff AveAmes, IA 50010 Tel: (515) 239-4400
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed
Compare with Similar Doctors
 |  | |  |
| Dr. Larry La Verne Johnston, DO | Ashley Anderson, APRN | Jason Allen Cascio | Angela Sehgal |
| Gastroenterology | Gastroenterology | Allergy & Immunology | Hospital Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 11 Years of Experience | 9 Years of Experience | 11 Years of Experience | |
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | |||
| Ames , IA | Sacramento , CA | Ames , IA | Ames , IA |
| Med School: Oklahoma State Univ Center For Health Sciences College Of Osteopathic Med | Med School: East Tennessee State University - Quillen College of Medicine | Med School: Loyola University Of Chicago Stritch School Of Medicine | Med School: Kasturba Medical College Manipal |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Larry La Verne Johnston
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. Larry La Verne Johnston has the following 2 specialties
Specialty Expertise
Dr. Larry La Verne Johnston has the following area of expertise
Certifications, License, & Education
11 Years Experience
Dr. Larry La Verne Johnston holds an expired medical license in the state of Iowa.
Medical License
Doctor Of Osteopathy with an expired medical license in the state of Iowa that expired in 2026.
Education & Training
Medical School
Graduated from Oklahoma State Univ Center For Health Sciences College Of Osteopathic Med in 2015.
NPI Number
Dr. Johnston's NPI number is 1386036333.
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Frequently Asked Questions
- Where is Dr. Larry Johnston's office located?
- Dr. Larry Johnston's office is located at 1111 Duff Ave, Ames, IA, 50010.
- Does Dr. Larry Johnston accept my insurance?
- You can see the insurance plans that Dr. Larry Johnston accepts on their Vitals profile.
- How can I make an appointment with Dr. Larry Johnston?
- You can find contact information for Dr. Larry Johnston here on Vitals.
- Which hospitals is Dr. Larry Johnston affiliated with?
- Dr. Larry Johnston is affiliated with Mary Greeley Medical Center and Jack C Montgomery Va Medical Center.
- Is Dr. Larry Johnston accepting new patients?
- Dr. Larry Johnston is accepting new patients on Vitals. View Dr. Larry Johnston's profile on Vitals to make an appointment.
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