Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1013947993 Individual Practitioner Male Practitioner

Robert Dale Niedringhaus

Internal Medicine - Hematology • Duluth, MN

Professional Overview & Biography Verified Profile Summary

Robert Niedringhaus is a registered healthcare professional specializing in Internal Medicine - Hematology in Duluth, MN. Practice services are available at 400 E 3RD ST under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

400 E 3rd St

Duluth, MN 558051951

Telephone 2187868364
Associated Practice Facility / Clinic
🏢 The Duluth Clinic, Ltd Facility NPI 1245278209

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine - Hematology in Duluth, MN

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 24.7 Yrs
State Avg: 21.2 Yrs
Regional Practice Density
5 Specialists

Practicing in Duluth, MN (134 Statewide)

Telehealth Adoption Rate
60.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

Internal Medicine - Hematology Primary Specialty

NUCC Taxonomy Code: 207RH0000X

State License WI 26690-20

An internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, clotting disorders, sickle cell disease, hemophilia, leukemia and lymphoma.

Internal Medicine - Hematology

NUCC Taxonomy Code: 207RH0000X

State License MN 18665

An internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, clotting disorders, sickle cell disease, hemophilia, leukemia and lymphoma.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
521085200 (MN)
Medicaid State Provider ID
31287000 (WI)

Practice Associates & Co-Workers

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

40 Associated Practitioners
Molly Dwyer , APRN, CNP

Nurse Practitioner - Psychiatric/Mental Health

NPI 1003468760

Advanced Practice Registered Nurse, Certified Nurse Practitioner

NPI 1003565292

Doctor of Medicine (M.D.)

Kelsey O'neil , APRN, CNP

Nurse Practitioner - Family

NPI 1003677303

Advanced Practice Registered Nurse, Certified Nurse Practitioner

Annette Barker

Nurse Practitioner - Family

NPI 1003845595
Bruce Derauf

Radiology - Diagnostic Radiology

NPI 1003847385
Nizar Saleh

Internal Medicine - Cardiovascular Disease

NPI 1003857889

Career & Practice History Timeline

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

7 Historical Events
🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 12, 2026

Internal Medicine (License #18665 in MN)

NPI Profile Active May 09, 2011

NPI status registered as active in NPPES database

📍
Updated Practice Location May 09, 2011

Registered at 400 E 3RD ST, DULUTH, MN 558051951 (Tel: 2187868364)

📍
Updated Business Mailing Address May 09, 2011

Registered at 400 E 3RD ST, DULUTH, MN 558051951 (Tel: 2187868364)

👤
Provider Name / Credentials Updated May 09, 2011

Recorded as ROBERT NIEDRINGHAUS

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) May 09, 2011

Internal Medicine (License #26690-20 in WI)

🟢
Initial NPI Registration & Enumeration July 04, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1013947993
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: July 04, 2006
Last Update: July 12, 2026
Sole Proprietor: No

Mailing Address

400 E 3rd St

Duluth, MN 558051951

Phone: 2187868364

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.