BRIAN K LARSEN MD
NPI 1790776383
Anesthesiology in La Crosse, WI

Q: What is Brian Larsen's NPI number?

The NPI number for Brian Larsen is 1790776383. It was assigned to this individual provider in the NPPES registry on November 2, 2005.

Q: What is Brian Larsen's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Brian Larsen was last updated on September 15, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.

Active since November 02, 2005PECOS EnrolledAccepts Medicare Assignment

700 WEST AVE S, LA CROSSE, WI 54601(608) 785-0940(608) 791-7162 Get Directions Write a Review

NPPES record last updated: September 15, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 15, 2020, May 17, 2019 (2 updates tracked since 2019).

On this page

About Brian K Larsen Md NPPES

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

BRIAN K LARSEN MD (NPI 1790776383) is an individual anesthesiology provider in La Crosse, Wisconsin, licensed in Wisconsin (44257) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Health System-franciscan Medical Center Inc, and is a graduate of University Of Wisconsin School Of Medicine (1998).

NPPES Registry Identity

NPI1790776383

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameBRIAN K LARSENCredential: MD

Location Address700 WEST AVE SLa Crosse, WI 54601-4783

Mailing AddressPo Box 1510Eau Claire, WI 54702-1510 · (608) 785-0940

Phone(608) 785-0940

Fax(608) 791-7162

Sole ProprietorNo

Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 1998

Enumeration DateNovember 2, 2005

Last NPPES UpdateSeptember 15, 20202 updates tracked since enumeration

NPPES CertifiedSeptember 15, 2020

✔ NPI 1790776383 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in WI · 44257

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.

700 WEST AVE S, La Crosse, WI 54601

Open in Google Maps ↗

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

Brian K Larsen Md 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 ID2860686953

PECOS Enrollment IDI20101102001490

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 Reassignment

Medicare enrollment records show Brian Larsen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mayo Clinic Health System-Southwest Wisconsin Region, Inc.

0.1 mi

Multi-Specialty

800 WEST AVE S
La Crosse, WI 54601

Reassigned Medicare billing, Wisconsin enrollment
Also billed through NPI 1841278637 (Wisconsin)
1,003 clinicians in this Medicare group

NPI 1629056049 (608) 392-3861

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 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.

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.

83 services83 patients

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731

This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.

64 services59 patients

Anesthesia for procedure on small and large bowel using an endoscope 00813

Anesthesia for an endoscopic procedure on the small and large bowel ensures comfort and relaxation during the procedure. It involves administering medicine to help you sleep or feel drowsy. This allows the doctor to examine your bowels without causing you discomfort or pain.

35 services35 patients

Anesthesia for other procedure on upper abdomen 00790

Anesthesia for an upper abdomen procedure involves using medications to help you feel no pain during the operation. It can be general, where you're unconscious, or regional, where just the abdomen area is numbed. It ensures comfort and stillness, aiding a successful procedure.

15 services15 patients

Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 64447

This procedure involves injecting a numbing agent and/or steroid into a nerve in your thigh. It's done to alleviate pain or inflammation. A needle will be carefully positioned near the nerve, and the medicine will be administered.

15 services14 patients

Anesthesia for exam of colon using an endoscope 00812

Anesthesia for a colon examination with an endoscope is a method used to ensure comfort during the procedure. It involves administering medication to help you relax or sleep, thus reducing discomfort as the endoscope, a thin, flexible tube, is navigated through your colon.

13 services13 patients

Hospital Affiliations CMS Care Compare

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

Mayo Clinic Health System-Franciscan Medical Center Inc

Acute Care Hospitals · La Crosse, WI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520004

Location700 West Avenue SouthLa Crosse, WI 54601 · La Crosse County

Emergency services Birthing friendly

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.

HOLLY JANIKOWSKI PHARM.D.

Pharmacist