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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. NICHOLAS C. ELLEFSON DO
NPI 1639699200
Hospitalist in Duluth, MN

Active since June 23, 2017PECOS EnrolledAccepts Medicare Assignment
402 E 2ND ST, DULUTH, MN 55805(218) 786-4000 Get Directions Write a Review

NPPES record last updated: September 1, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 1, 2026, Jun 19, 2020, Oct 29, 2019 and 1 more (4 updates tracked since 2017).

About Dr. Nicholas C. Ellefson Do NPPES

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

DR. NICHOLAS C. ELLEFSON DO (NPI 1639699200) is an individual hospitalist provider in Duluth, Minnesota, licensed in Minnesota (66646) and active in the NPI registry since June 2017. He is enrolled in Medicare PECOS, is affiliated with Essentia Health St Mary's Medical Center, and maintains a secondary practice location in Superior.

NPPES Registry Identity

NPI1639699200
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameDR. NICHOLAS C. ELLEFSONCredential: DO
Location Address402 E 2ND STDuluth, MN 55805-1906
Mailing Address1702 University Dr SFargo, ND 58103-4940
Phone(218) 786-4000
Sole ProprietorNo
Medical School CMSWest Virginia School Of Osteopathic MedicineGraduated 2012
Enumeration DateJune 23, 2017
Last NPPES UpdateSeptember 1, 20264 updates tracked since enumeration
NPPES CertifiedSeptember 1, 2026
✔ NPI 1639699200 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
Licenses✔ Licensed in MN · 66646✔ Licensed in WI · 71579-21
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 ListedFamily MedicineTaxonomy 207Q00000X · License 66646 (MN), 71579-21 (WI), 3356 (WV)
402 E 2ND ST, Duluth, MN 55805
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Secondary Practice Location 1

Location 13500 Tower AveSuperior, WI 54880-4491 · Phone (715) 817-7100 · Fax (715) 817-7039

Accepted Insurance

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Nicholas C. Ellefson Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5092089938
PECOS Enrollment IDI20200713003364, I20201027002963
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.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
181 services70 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
100 services39 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
55 services54 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
31 services31 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
15 services11 patients
Nursing facility discharge management, more than 30 minutes 99316
Nursing facility discharge management over 30 minutes is a comprehensive process where a healthcare team prepares you for leaving the facility. It involves creating a tailored plan, coordinating care, and ensuring a smooth transition to your next care setting.
13 services12 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Essentia Health St Mary's Medical Center

Acute Care Hospitals · Duluth, MN
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number240002
Location402 East Second StreetDuluth, MN 55805 · St. Louis County
Emergency services Birthing friendly

Essentia Health Duluth

Acute Care Hospitals · Duluth, MN
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number240019
Location502 East Second StreetDuluth, MN 55805 · St. Louis County
Birthing friendly

Essentia Health Moose Lake

Critical Access Hospitals · Moose Lake, MN
OwnershipGovernment - Hospital District or Authority
CMS Certification Number241350
Location4572 County Road 61Moose Lake, MN 55767 · Carlton County
Emergency services Birthing friendly

St Marys Hospital Superior

Critical Access Hospitals · Superior, WI
OwnershipVoluntary non-profit - Private
CMS Certification Number521329
Location3500 Tower AveSuperior, WI 54880 · Douglas County
Emergency services

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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
3 suppliers13 claims13 services$79.02 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

DR. COLTON DAVID WIESNER MD
Emergency Medicine
402 E 2ND ST
DULUTH, MN 55805
St. Louis County (218) 786-4000
MS. JESSICA LEIGH ROBINSON PA-C
Physician Assistant
402 E 2ND ST
DULUTH, MN 55805
St. Louis County (218) 786-4000
DR. WAMUNYIMA AKAKULU MD
Hospitalist
402 E 2ND ST
DULUTH, MN 55805
St. Louis County (218) 786-4000
AARON TOSHI HEASLET PA-C
Physician Assistant
402 E 2ND ST
DULUTH, MN 55805
St. Louis County (218) 786-3443
ZACHARY THOMAS BARCLAY PA-C
Physician Assistant
402 E 2ND ST
DULUTH, MN 55805
St. Louis County (218) 786-4000
BREA J GALYEN DPT
Physical Therapist
402 E 2ND ST
DULUTH, MN 55805
St. Louis County (218) 786-4000
MR. WILLIAM THOMAS HAM DPT
Physical Therapist
402 E 2ND ST
DULUTH, MN 55805
St. Louis County (218) 786-4000
SOPHIA LYNN KRIKAVA OTR/L
Occupational Therapist
402 E 2ND ST
DULUTH, MN 55805
St. Louis County (218) 786-4000

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 Nicholas Ellefson's NPI number?

The NPI number for Nicholas Ellefson is 1639699200. It was assigned to this individual provider in the NPPES registry on June 23, 2017.

Where is Nicholas Ellefson located?

Nicholas Ellefson practices at 402 E 2nd St, Duluth, MN 55805. The listed phone number is (218) 786-4000.

What is Nicholas Ellefson's specialty?

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

Is Nicholas Ellefson enrolled in Medicare?

Yes. Nicholas Ellefson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Nicholas Ellefson accept?

Health plans from HealthPartners, Medica, Sanford Health Plan and Security Health Plan list Nicholas Ellefson 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.

Is Nicholas Ellefson affiliated with any hospitals?

According to CMS data, Nicholas Ellefson is affiliated with Essentia Health St Mary's Medical Center, Essentia Health Duluth, Essentia Health Moose Lake and St Marys Hospital Superior.

When was this NPI record last updated?

The NPPES record for Nicholas Ellefson was last updated on September 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.