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Summary
Dr. Larry Johnston treats colon polyps, obesity and overweight, and diverticular disease, and performs lower GI endoscopy, colonoscopy, and sedation. He practices gastroenterology and internal medicine and has 11 years of experience.
He is affiliated with Mary Greeley Medical Center and Jack C Montgomery VA Medical Center, both in Ames, Iowa. Dr. Johnston received his medical degree from Oklahoma State University Center for Health Sciences College of Osteopathic Medicine.
He is affiliated with Mary Greeley Medical Center and Jack C Montgomery VA Medical Center, both in Ames, Iowa. Dr. Johnston received his medical degree from Oklahoma State University Center for Health Sciences College of Osteopathic Medicine.
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 | Dr. Kristy Ann Calland, DO | Dr. Reda Dehar, DO |
| Gastroenterology | Gastroenterology | Internal Medicine | Internal Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | Accepts New Patients |
| 11 Years of Experience | 14 Years of Experience | ||
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | Speaks English | Speaks English | |
| Ames , IA | Sacramento , CA | Ames , IA | Stratford , 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: Chicago Medical School At Rosalind Franklin University Of Medicine & Science | |
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
- 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.
- Does Dr. Larry Johnston accept my insurance?
- You can see the insurance plans that Dr. Larry Johnston accepts on their Vitals profile.
- Does Dr. Larry Johnston accept virtual/telehealth appointments?
- Dr. Larry Johnston has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Where is Dr. Larry Johnston's office located?
- Dr. Larry Johnston's office is located at 1111 Duff Ave, Ames, IA, 50010.
- 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.
Data Sources
This provider profile is built using data from:
- NPPES NPI Registry
- State medical licensing boards
- Healthcare system and provider network data
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