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MR. NICHOLAS JAMES LARSEN DO
NPI 1164644464
Anesthesiology in Ogden, UT

Active since May 03, 2007PECOS EnrolledAccepts Medicare Assignment
79.72/100
CMS Quality Rating
4401 HARRISON BLVD, OGDEN, UT 84403(801) 387-2800(770) 701-6675 Get Directions Write a Review

NPPES record last updated: July 25, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 11, 2025, Nov 22, 2024, Mar 2, 2018 (3 updates tracked since 2018).

About Mr. Nicholas James Larsen Do NPPES

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

MR. NICHOLAS JAMES LARSEN DO (NPI 1164644464) is an individual anesthesiology provider in Ogden, Utah, licensed in Utah (7650570-1204) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, is affiliated with Benefis Hospitals Inc, and is a graduate of Other (2003).

NPPES Registry Identity

NPI1164644464
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameMR. NICHOLAS JAMES LARSENCredential: DO
Location Address4401 HARRISON BLVDOgden, UT 84403-3195
Mailing AddressPo Box 3570Salt Lake City, UT 84110-3570 · (801) 727-2056 · Fax (770) 701-6675
Phone(801) 387-2800
Fax(770) 701-6675
Sole ProprietorNo
Medical School CMSOtherGraduated 2003
Enumeration DateMay 3, 2007
Last NPPES UpdateJuly 25, 20253 updates tracked since enumeration
NPPES CertifiedJuly 25, 2025
✔ NPI 1164644464 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in UT · 7650570-1204✔ Licensed in OR · DO222362✔ Licensed in WI · 3084-321✔ Licensed in MT · 148134✔ Licensed in IA · DO-07085
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
4401 HARRISON BLVD, Ogden, UT 84403
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Select Health, Wellmark Health Plan of Iowa, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mr. Nicholas James Larsen 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 ID345334553
PECOS Enrollment IDI20250120000388, I20250218002325, I20250812001814
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.

Medicare Billing Reassignments

3

Medicare enrollment records show Nicholas Larsen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mountain West Anesthesia LLC
52 mi
Anesthesiology
3300 N TRIUMPH BLVD STE G50
Lehi, UT 84043
  • Reassigned Medicare billing, Utah enrollment
  • 355 clinicians in this Medicare group
NPI 1558391763 (801) 990-1911
Benefis Hospitals Inc
437 mi
Multi-Specialty
1401 25TH ST S
Great Falls, MT 59405
  • Reassigned Medicare billing, Montana enrollment
  • 637 clinicians in this Medicare group
NPI 1780968974 (406) 455-5000
Cep America - Anesthesia PC
602 mi
Anesthesiology
2700 NW STEWART PKWY
Roseburg, OR 97471
  • Reassigned Medicare billing, Oregon and Iowa enrollments
  • Also billed through NPI 1194516146 (Iowa)
  • 82 clinicians in this Medicare group
NPI 1235842196 (541) 673-0611

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

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.

Anesthesia for lens surgery 00142
Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.
19 services19 patients
Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
12 services12 patients

Hospital Affiliations CMS Care Compare 2

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

Benefis Hospitals Inc

Acute Care Hospitals · Great Falls, MT
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number270012
Location1101 26th St SGreat Falls, MT 59405 · Cascade County
Emergency services Birthing friendly

Mercy Medical Center

Acute Care Hospitals · Roseburg, OR
4/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number380027
Location2700 NW Stewart ParkwayRoseburg, OR 97471 · Douglas County
Emergency services Birthing friendly

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

79.72/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality82.84
Improvement Activities40
Cost63.86

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.

MIKHAIL SHIPOTKO MD
Hospitalist
4401 HARRISON BLVD
OGDEN, UT 84403
Weber County (801) 387-2800
MIRANDA MARY BRENNAN
Nurse Practitioner
4401 HARRISON BLVD
OGDEN, UT 84403
Weber County (385) 405-6058
DR. TIMOTHY TRASK M.D.
Hospitalist
4401 HARRISON BLVD
OGDEN, UT 84403
Weber County (801) 387-3654
MRS. ANALEE MARSTON RPH
Pharmacist
4401 HARRISON BLVD
OGDEN, UT 84403
Weber County (801) 387-7500
DR. JASON BENNETT COOMBS D.O.
Physical Medicine & Rehabilitation
4401 HARRISON BLVD
OGDEN, UT 84403
Weber County (801) 387-2800
MCKAY-DEE HOSPITAL
Pharmacy (Institutional Pharmacy)
4401 HARRISON BLVD
OGDEN, UT 84403
Weber County (801) 387-6002
DAWN MONCHELLE HANSMANN SLP
Speech-Language Pathologist
4401 HARRISON BLVD
OGDEN, UT 84403
Weber County (801) 387-2800
DR. JOHN NICHOLAS SOTER MD
Internal Medicine (Pulmonary Disease)
4401 HARRISON BLVD
OGDEN, UT 84403
Weber County (801) 387-2800

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 Larsen's NPI number?

The NPI number for Nicholas Larsen is 1164644464. It was assigned to this individual provider in the NPPES registry on May 3, 2007.

Where is Nicholas Larsen located?

Nicholas Larsen practices at 4401 Harrison Blvd, Ogden, UT 84403. The listed phone number is (801) 387-2800.

What is Nicholas Larsen's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Nicholas Larsen enrolled in Medicare?

Yes. Nicholas Larsen 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.

Which organizations bill Medicare for Nicholas Larsen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Larsen reassigns Medicare benefits to 3 organizations: Mountain West Anesthesia LLC (Lehi, UT), Benefis Hospitals Inc (Great Falls, MT) and Cep America - Anesthesia PC (Roseburg, OR). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nicholas Larsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nicholas Larsen accept?

Health plans from Blue Cross and Blue Shield of Montana, Select Health and Wellmark Health Plan of Iowa, Inc. list Nicholas Larsen 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 Larsen affiliated with any hospitals?

According to CMS data, Nicholas Larsen is affiliated with Benefis Hospitals Inc and Mercy Medical Center.

When was this NPI record last updated?

The NPPES record for Nicholas Larsen was last updated on July 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.