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Active NPI 1174569727 Individual Practitioner Male Practitioner

Dr. Robert W Hollenhorst , MD

Ophthalmology • Duluth, MN

Professional Overview & Biography Verified Profile Summary

Dr. Robert Hollenhorst, MD is a registered healthcare professional specializing in Ophthalmology in Duluth, MN. Practice services are available at 5007 MATTERHORN DR under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

5007 Matterhorn Dr

Duluth, MN 558113812

Telephone 2187203553
Fax 2187869375
Associated Practice Facility / Clinic
🏢 Relf Optical Ltd Facility NPI 1639115546

Specialty Benchmarks & Practice Insights

Comparative analytics for Ophthalmology in Duluth, MN

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 22.7 Yrs
State Avg: 24.4 Yrs
Regional Practice Density
19 Specialists

Practicing in Duluth, MN (457 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

Medical Specialties & State Licenses

Ophthalmology Primary Specialty

NUCC Taxonomy Code: 207W00000X

State License MN 22377

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
17265100 (MN)

Practice Associates & Co-Workers

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

5 Associated Practitioners
NPI 1073876397

Doctor of Osteopathic Medicine (D.O.)

NPI 1720059603

Doctor of Medicine (M.D.)

NPI 1811924772

Doctor of Optometry

Dr. Susan Relf , MD

Ophthalmology

NPI 1811925084

Doctor of Medicine (M.D.)

NPI 1912943846

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events
NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 5007 MATTERHORN DR, DULUTH, MN 558113812 (Tel: 2187203553)

📍
Updated Business Mailing Address July 08, 2007

Registered at 5007 MATTERHORN DR, DULUTH, MN 558113812 (Tel: 2187203553)

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as ROBERT HOLLENHORST, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Ophthalmology (License #22377 in MN)

🟢
Initial NPI Registration & Enumeration June 21, 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: 1174569727
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 21, 2006
Last Update: July 13, 2026
Sole Proprietor: No

Mailing Address

5007 Matterhorn Dr

Duluth, MN 558113812

Phone: 2187203553

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.