Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1083242564 Individual Practitioner Male Practitioner

Dr. John Peter Bretzman , MD

Radiology - Diagnostic Radiology • Bismarck, ND

✓ Accepts Medicare Assignment
Public Directory Information & Medical Disclaimer

This profile is compiled from official public domain records provided by CMS and the NPPES registry. TRUE-MEDINFO is an independent reference directory and does not provide medical advice, diagnosis, or treatment recommendations. Always consult a licensed medical professional for personal health decisions.

Professional Overview & Biography Verified Profile Summary

Dr. John Bretzman, MD is a registered Radiology - Diagnostic Radiology practitioner in Bismarck, ND. With approximately 6 years of clinical practice since completing medical education in 2020, Dr. Bretzman provides healthcare services at the registered practice location at 300 N 7TH ST.

Dr. Bretzman maintains professional affiliations with Sanford Bismarck, Mayo Clinic and accepts Medicare assignment.

Practice Location & Contact Primary Location

Practice Address

300 N 7th St

Bismarck, ND 585014439

Telephone 7013236000
Associated Practice Facility / Clinic
🏢 Sanford Bismarck Facility NPI 1790889715

Medicare Profile & Education

Medical School

Other

Graduation Year

2020

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Radiology - Diagnostic Radiology in Bismarck, ND

Experienced Practitioner (5-10 Yrs)
Practitioner Clinical Experience
6 Yrs -14.5 yrs vs City Avg
City Avg: 20.5 Yrs
State Avg: 27.3 Yrs
Regional Practice Density
27 Specialists

Practicing in Bismarck, ND (117 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Bretzman (6 Years) 6 Yrs
Bismarck Specialty Average (20.5 Years) 20.5 Yrs

Medical Specialties & State Licenses

CMS Verified: 2025-09-04
Radiology - Diagnostic Radiology Primary Specialty

NUCC Taxonomy Code: 2085R0202X

State License ND PT22873

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

Internal Medicine

NUCC Taxonomy Code: 207R00000X

State License MN 69553

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Radiology - Vascular & Interventional Radiology

NUCC Taxonomy Code: 2085R0204X

State License MN 69553

A radiologist who diagnoses and treats diseases by various radiologic imaging modalities. These include fluoroscopy, digital radiography, computed tomography, sonography and magnetic resonance imaging.

Internal Medicine

NUCC Taxonomy Code: 207R00000X

State License MN 30947

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Hospital & Practice Group Affiliations

Mayo Clinic

200 1st St Sw, Rochester, MN 559050001

Phone: 5072842511

Sanford Bismarck

None, Rochester, MN 55901

Phone: 7013236000

Sanford Bismarck

222 N 7th St, Bismarck, ND 585014436

Phone: 7013236000

Sanford Bismarck

3318 N 14th St, Bismarck, ND 585031614

Phone: 7013238300

Sanford Bismarck

1833 E Bismarck Expressway, Bismarck, ND 585014436

Phone: 7013235222

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners
Dr. Steven Sonnamaker , MD

Emergency Medicine

NPI 1003345323

Doctor of Medicine (M.D.)

Madison Schatz , FNP

Nurse Practitioner - Family

NPI 1003665860

Family Nurse Practitioner

Dr. James Bossort , MD

Family Medicine

NPI 1003879545

Doctor of Medicine (M.D.)

Rodney Kraft , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003907841

Certified Registered Nurse Anesthetist

NPI 1013015783

Doctor of Medicine (M.D.)

Christina Gisvold , FNP-C

Nurse Practitioner

NPI 1013270503

Family Nurse Practitioner (Certified)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

12 Historical Events
📍
Updated Practice Location September 04, 2025

Registered at 300 N 7TH ST, BISMARCK, ND 585014439 (Tel: 7013236000)

📍
Updated Business Mailing Address September 04, 2025

Registered at PO BOX 5074, SIOUX FALLS, SD 571175074

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 04, 2025

Radiology (License #PT22873 in ND)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 30, 2023

Internal Medicine (License #69553 in MN)

👤
Provider Name / Credentials Updated August 26, 2020

Recorded as JOHN BRETZMAN, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 26, 2020

Internal Medicine (License #30947 in MN)

NPI Profile Active March 30, 2020

NPI status registered as active in NPPES database

📍
Updated Practice Location March 30, 2020

Registered at 200 1ST ST SW, ROCHESTER, MN 559050001 (Tel: 5072842511)

📍
Updated Business Mailing Address March 30, 2020

Registered at 200 1ST ST SW, ROCHESTER, MN 559050001 (Tel: 5072842511)

👤
Provider Name / Credentials Updated March 30, 2020

Recorded as JOHN BRETZMAN

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 30, 2020

Student in an Organized Health Care Education/Training Program

🟢
Initial NPI Registration & Enumeration March 30, 2020

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews
No patient reviews submitted yet for Dr. John Bretzman. Be the first to share your experience!

Sign in to leave a review for Dr. John Bretzman

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1083242564
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: March 30, 2020
Last Update: September 04, 2025
Sole Proprietor: No

Mailing Address

Po Box 5074

Sioux Falls, SD 571175074

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.