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DR. CYRUS MICHAEL LARSON DMD
NPI 1891096079
Dentist - General Practice in Missoula, MT

Active since November 04, 2010PECOS Enrolled
628 SOUTH AVE W, SUITE B, MISSOULA, MT 59801(801) 310-7039 Get Directions Write a Review

NPPES record last updated: November 10, 2016. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Cyrus Michael Larson Dmd NPPES

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

DR. CYRUS MICHAEL LARSON DMD (NPI 1891096079) is an individual general practice provider in Missoula, Montana, licensed in Montana (9630) and active in the NPI registry since November 2010. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1891096079
Entity TypeIndividualMale
Primary Taxonomy1223G0001X
Provider Legal NameDR. CYRUS MICHAEL LARSONCredential: DMD
Location Address628 SOUTH AVE W, SUITE BMissoula, MT 59801-8020
Mailing Address628 South Ave W, Suite BMissoula, MT 59801-8020 · (801) 310-7039
Phone(801) 310-7039
Sole ProprietorYes
Enumeration DateNovember 4, 2010
Last NPPES UpdateNovember 10, 2016
✔ NPI 1891096079 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers
Taxonomy Code1223G0001X
License✔ Licensed in MT · 9630
Definition
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
628 SOUTH AVE W, Missoula, MT 59801
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Cyrus Michael Larson Dmd 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 Cyrus Larson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Granite County Hospital District
49 mi
Critical Access
310 SOUTH SANSOME STREET
Philipsburg, MT 59858
  • Reassigned Medicare billing, Montana enrollment
  • 9 clinicians in this Medicare group
NPI 1922073907 (406) 859-3271

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 59801 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
$87.97 typical visit price
range $56.81 – $172.26
Typical copayment $21.99 (range $14.20 – $43.06)
Most-billed visit code 99203
Established Patient
$70.82 typical visit price
range $18.24 – $140.32
Typical copayment $17.70 (range $4.56 – $35.08)
Most-billed visit code 99213
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 3

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

DR. DAVID ROY SHELBY DDS
Dentist (General Practice)
628 SOUTH AVE W
MISSOULA, MT 59801
Missoula County (406) 549-6323
DR. JAMES GROTH BIGELOW D.D.S.
Dentist (General Practice)
628 SOUTH AVE W
MISSOULA, MT 59801
Missoula County (406) 543-0300
MEADOWLARK DENTAL CARE PLLC
Dentist
628 SOUTH AVE W, SUITE B
MISSOULA, MT 59801
Missoula County (406) 543-0300

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 Cyrus Larson's NPI number?

The NPI number for Cyrus Larson is 1891096079. It was assigned to this individual provider in the NPPES registry on November 4, 2010.

Where is Cyrus Larson located?

Cyrus Larson practices at 628 South Ave W Suite B, Missoula, MT 59801. The listed phone number is (801) 310-7039.

What is Cyrus Larson's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Is Cyrus Larson enrolled in Medicare?

Yes. Cyrus Larson is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Cyrus Larson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cyrus Larson reassigns Medicare benefits to Granite County Hospital District (Philipsburg, MT). 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 Cyrus Larson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Cyrus Larson was last updated on November 10, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.