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DR. BRIAN TIMOTHY LARSEN M.D.
NPI 1366768533
Internal Medicine in Hermiston, OR

Active since April 13, 2010PECOS Enrolled
91.35/100
CMS Quality Rating
620 NW 11TH ST STE M103, HERMISTON, OR 97838(541) 567-5305(541) 303-8767 Get Directions Write a Review

NPPES record last updated: June 10, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 27, 2025, Apr 14, 2021, Jun 28, 2016 and 1 more (4 updates tracked since 2016).

About Dr. Brian Timothy Larsen M.d. NPPES

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

DR. BRIAN TIMOTHY LARSEN M.D. (NPI 1366768533) is an individual internal medicine provider in Hermiston, Oregon, licensed in Oregon (MD165374) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1366768533
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. BRIAN TIMOTHY LARSENCredential: M.D.
Location Address620 NW 11TH ST STE M103Hermiston, OR 97838-6941
Mailing Address620 Nw 11th St Ste M103Hermiston, OR 97838-6941 · (541) 667-3797 · Fax (541) 303-8767
Phone(541) 567-5305
Fax(541) 303-8767
Sole ProprietorYes
Enumeration DateApril 13, 2010
Last NPPES UpdateJune 10, 20264 updates tracked since enumeration
NPPES CertifiedJune 10, 2026
✔ NPI 1366768533 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in OR · MD165374
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
620 NW 11TH ST STE M103, Hermiston, OR 97838
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Moda Health Plan, Inc., PacificSource Health Plans and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Brian Timothy Larsen M.d. 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.

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.

Good Shepherd Health Care System
Same address
Critical Access
610 NW 11TH ST
Hermiston, OR 97838
  • Reassigned Medicare billing, Oregon enrollment
  • 344 clinicians in this Medicare group
NPI 1295789667 (541) 667-3400

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97838 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
$126.25 typical visit price
range $54.96 – $166.64
Typical copayment $31.56 (range $13.74 – $41.66)
Most-billed visit code 99204
Established Patient
$97.16 typical visit price
range $17.68 – $136.19
Typical copayment $24.29 (range $4.42 – $34.04)
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.

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.

91.35/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality77.29
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims 15

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
8 suppliers83 claims220 services$6.14 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
6 suppliers31 claims44 services$1.11 avg. paid by Medicare
Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
2 suppliers19 claims19 services$42.11 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
2 suppliers14 claims14 services$74.69 avg. paid by Medicare
Headgear used with positive airway pressure device A7035
DME-Other DME · category DE001N
2 suppliers12 claims12 services$23.71 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
2 suppliers18 claims108 services$3.10 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 5

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

MICHELLE MCINTYRE
Nurse Practitioner
620 NW 11TH ST STE M103
HERMISTON, OR 97838
Umatilla County (541) 667-3797
DR. DAVID B SHANLEY MD
Family Medicine
620 NW 11TH ST STE M103
HERMISTON, OR 97838
Umatilla County (541) 667-3830
BARBARA L ATWOOD MD LLC
Internal Medicine
620 NW 11TH ST STE M103
HERMISTON, OR 97838
Umatilla County (541) 667-3797
DR. BRADLEY TYMCHUK M.D.
Internal Medicine
620 NW 11TH ST STE M103
HERMISTON, OR 97838
Umatilla County (509) 820-7845
NU NWE TUN MD
Internal Medicine (Geriatric Medicine)
620 NW 11TH ST STE M103
HERMISTON, OR 97838
Umatilla County (541) 567-5305

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 Brian Larsen's NPI number?

The NPI number for Brian Larsen is 1366768533. It was assigned to this individual provider in the NPPES registry on April 13, 2010.

Where is Brian Larsen located?

Brian Larsen practices at 620 NW 11th St Ste M103, Hermiston, OR 97838. The listed phone number is (541) 567-5305.

What is Brian Larsen's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Brian Larsen enrolled in Medicare?

Yes. Brian Larsen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Brian Larsen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Brian Larsen reassigns Medicare benefits to Good Shepherd Health Care System (Hermiston, OR). The 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 Brian Larsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Brian Larsen accept?

Health plans from BridgeSpan Health Company, Moda Health Plan, Inc., PacificSource Health Plans, Providence Health Plan and Regence BlueCross BlueShield of Oregon list Brian 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.

When was this NPI record last updated?

The NPPES record for Brian Larsen was last updated on June 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.