1. Home
  2. Directory
  3. Minnesota
  4. Duluth
  5. Hospitalist
  6. NPI Profile

GREGORY MASON MD
NPI 1437292976
Hospitalist in Duluth, MN

Active since February 15, 2007PECOS Enrolled
400 EAST 3RD STREET, DULUTH, MN 55805(218) 786-8364 Get Directions Write a Review

NPPES record last updated: April 23, 2024. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Gregory Mason Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREGORY MASON MD (NPI 1437292976) is an individual hospitalist provider in Duluth, Minnesota, licensed in Minnesota (49567) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1437292976
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameGREGORY MASONCredential: MD
Location Address400 EAST 3RD STREETDuluth, MN 55805
Mailing Address400 East 3rd StreetDuluth, MN 55805 · (218) 786-8364
Phone(218) 786-8364
Sole ProprietorNo
Enumeration DateFebruary 15, 2007
Last NPPES UpdateApril 23, 2024
NPPES CertifiedApril 23, 2024
✔ NPI 1437292976 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in MN · 49567
Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedPediatricsTaxonomy 208000000X · License 49567 (MN)
400 EAST 3RD STREET, Duluth, MN 55805
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include HealthPartners, Medica, Sanford Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gregory Mason Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 55805 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$127.61 typical visit price
range $56.00 – $168.28
Typical copayment $31.90 (range $14.00 – $42.07)
Most-billed visit code 99204
Established Patient
$98.61 typical visit price
range $18.32 – $138.04
Typical copayment $24.65 (range $4.58 – $34.51)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SAMUEL C. HOXIE MD
Orthopaedic Surgery
400 EAST 3RD STREET, ESSENTIA HEALTH DULUTH CLINIC
DULUTH, MN 55805
St. Louis County (218) 786-3520
DR. OBIOMA J. IGBOKO MBBS
Physical Medicine & Rehabilitation (Pain Medicine)
400 EAST 3RD STREET, ESSENTIA HEALTH DULUTH CLINIC
DULUTH, MN 55805
St. Louis County (218) 786-8364
NATHAN E. HOFFMANN MD
Urology
400 EAST 3RD STREET, SMDC MEDICAL CENTER-DULUTH CLINIC
DULUTH, MN 55805
St. Louis County (218) 786-3234
KENNETH DORNFELD MD
Radiology (Radiation Oncology)
400 EAST 3RD STREET
DULUTH, MN 55805
St. Louis County (218) 786-8364
JILL RP HOLSINGER MD
Radiology (Diagnostic Radiology)
400 EAST 3RD STREET, SMDC MEDICAL CENTER-DULUTH CLINIC
DULUTH, MN 55805
St. Louis County (218) 786-8160
DR. JUSTIN DAVID HILL MD
Radiology (Diagnostic Radiology)
400 EAST 3RD STREET, DULUTH CLINIC
DULUTH, MN 55805
St. Louis County (218) 786-4450
MAREN KAY SHARLAND PA-C
Physician Assistant (Medical)
400 EAST 3RD STREET, SMDC MEDICAL CENTER-DULUTH CLINIC
DULUTH, MN 55805
St. Louis County (218) 786-3925
CHRISTINA LEE HARVEY FALGIER MD
Pediatrics (Neonatal-Perinatal Medicine)
400 EAST 3RD STREET, DULUTH CLINIC
DULUTH, MN 55805
St. Louis County (218) 786-4601

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Mason's NPI number?

The NPI number for Gregory Mason is 1437292976. It was assigned to this individual provider in the NPPES registry on February 15, 2007.

Where is Gregory Mason located?

Gregory Mason practices at 400 East 3rd Street, Duluth, MN 55805. The listed phone number is (218) 786-8364.

What is Gregory Mason's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Gregory Mason enrolled in Medicare?

Yes. Gregory Mason is registered in the Medicare PECOS enrollment system.

What insurance does Gregory Mason accept?

Health plans from HealthPartners, Medica and Sanford Health Plan list Gregory Mason as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Gregory Mason was last updated on April 23, 2024. NPI Profile syncs with the weekly NPPES data releases published by CMS.