3
2 Ratings with 2 written Reviews
Summary
Dr. John Lewison has practiced internal medicine and hospital medicine for 33 years and is affiliated with Barton Memorial Hospital and Saint Peters Health Regional Medical Center. He treats type 2 diabetes mellitus, diabetes type 2 in children and teens, and hypertension. Dr. Lewison earned his medical degree from the University of Maryland School of Medicine and completed his residency at York Hospital. He sees patients in Helena, Montana.
Overview based on verified provider data
Quick Facts
- 33 years of experience
- York Hospital
- 2 written reviews
- 2 specialties
- 5 areas of expertise
- 2 hospital affiliations
- 1 office location
- Male
Patients’ Perspective
- Flexible scheduling
Based on patient feedback. Read the reviews
Office Location
Compare with Similar Doctors
 |  |  | |
| Dr. John Frederick Lewison, MD | Dr. Adewumi Bakare DMSc, PA-C | Dr. Marlys Ruth Drange, MD | Dr. Karl Anton Guter, MD |
| Internal Medicine | Internal Medicine | Endocrinology, Diabetes & Metabolism | Oncology |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 33 Years of Experience | 32 Years of Experience | 58 Years of Experience | |
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English, Spanish, Yoruba, French, Russian, Arabic, Chinese, Chinese (Mandarin) | Speaks English, Spanish | Speaks English, Spanish | |
| Helena , MT | Mesquite , TX | Helena , MT | Great Falls , MT |
| Med School: University Of Maryland School Of Medicine | Med School: University of Lynchburg - DMSc | Med School: Stanford University School Of Medicine | Med School: St Louis University School Of Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. John Frederick Lewison
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. John Frederick Lewison has the following 2 specialties
Specialty Expertise
Dr. John Frederick Lewison has the following 5 areas of expertise
Certifications, License, & Education
33 Years Experience
Dr. John Frederick Lewison holds an expired medical license in the state of Montana.
Medical License
Medical Doctor with an expired medical license in the state of Montana that expired in 2026.
Education & Training
Residency
Completed their residency at York Hospital.
Medical School
Graduated from University Of Maryland School Of Medicine in 1993.
NPI Number
Dr. Lewison's NPI number is 1497795678.
Similar doctors
Frequently Asked Questions
- Does Dr. John Lewison accept virtual/telehealth appointments?
- Dr. John Lewison has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Where is Dr. John Lewison's office located?
- Dr. John Lewison's office is located at 2475 E Broadway St, Helena, MT, 59601.
- Which hospitals is Dr. John Lewison affiliated with?
- Dr. John Lewison is affiliated with Barton Memorial Hospital and Saint Peters Health Regional Medical Center.
- Does Dr. John Lewison accept my insurance?
- You can see the insurance plans that Dr. John Lewison accepts on their Vitals profile.
- How can I make an appointment with Dr. John Lewison?
- You can find contact information for Dr. John Lewison here on Vitals.
Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews
Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.
Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.
Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.
