DR. SEAN MICHAEL DEMARS M.D.
NPI 1841261492
Otolaryngology in Richland, WA

Q: What is Sean Demars's NPI number?

The NPI number for Sean Demars is 1841261492. It was assigned to this individual provider in the NPPES registry on January 31, 2006.

Q: What is Sean Demars's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Q: When was this NPI record last updated?

The NPPES record for Sean Demars was last updated on November 11, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 January 31, 2006PECOS EnrolledAccepts Medicare Assignment

780 SWIFT BLVD STE 301, RICHLAND, WA 99352(599) 942-3178(509) 946-1735 Get Directions Write a Review

NPPES record last updated: November 11, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 11, 2021, Aug 11, 2021, Aug 2, 2021 and 1 more (4 updates tracked since 2016).

On this page

About Dr. Sean Michael Demars M.d. NPPES

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

DR. SEAN MICHAEL DEMARS M.D. (NPI 1841261492) is an individual otolaryngology provider in Richland, Washington, licensed in Washington (MD61139453) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Kadlec Regional Medical Center, and maintains a secondary practice location in Billings.

NPPES Registry Identity

NPI1841261492

Entity TypeIndividualMale

Primary Taxonomy207Y00000X

Provider Legal NameDR. SEAN MICHAEL DEMARSCredential: M.D.

Location Address780 SWIFT BLVD STE 301Richland, WA 99352-3524

Mailing Address550 Gage Blvd Ste 101Richland, WA 99352-9532 · (509) 942-3627 · Fax (509) 627-2983

Phone(599) 942-3178

Fax(509) 946-1735

Sole ProprietorNo

Medical School CMSOtherGraduated 2003

Enumeration DateJanuary 31, 2006

Last NPPES UpdateNovember 11, 20214 updates tracked since enumeration

NPPES CertifiedNovember 11, 2021

✔ NPI 1841261492 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians

Taxonomy Code207Y00000X

Licenses✔ Licensed in WA · MD61139453✔ Licensed in WA · AP30007073✔ Licensed in MT · MED-PHYS-LIC-18285

Definition

An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.

780 SWIFT BLVD STE 301, Richland, WA 99352

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Secondary Practice Location 1

Location 12900 12th Ave N., Ste 330WBillings, MT 59101-7590 · Phone (406) 238-6161 · Fax (406) 238-6171

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Moda Health Plan, Inc., Premera Blue Cross Blue Shield of Alaska 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 and accepts Medicare assignment

Dr. Sean Michael Demars M.d. 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 ID1254512973

PECOS Enrollment IDI20210809003008

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

Medicare enrollment records show Sean Demars reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Kadlec Regional Medical Center

0.1 mi

Plastic Surgery

888 SWIFT BLVD
Richland, WA 99352

Reassigned Medicare billing, Washington enrollment
454 clinicians in this Medicare group

NPI 1235471954 (509) 946-4611

Ear Nose & Throat Associates

518 mi

Specialist

2900 12TH AVE N, SUITE 330W
Billings, MT 59101

Reassigned Medicare billing, Montana enrollment
8 clinicians in this Medicare group

NPI 1386790798 (406) 238-6161

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 11

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.

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

128 services128 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

114 services79 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

98 services72 patients

Removal of impacted ear wax 69210

Impacted ear wax removal is a safe procedure to clear blockages in the ear canal caused by hardened ear wax. A healthcare professional uses specialized tools or a gentle irrigation method to loosen and remove the wax, improving hearing and alleviating discomfort.

81 services62 patients

Diagnostic exam of nasal passages using an endoscope 31231

A diagnostic exam of nasal passages using an endoscope is a non-invasive procedure. A small, flexible tube with a light and camera at the end, called an endoscope, is inserted into the nose. This allows the doctor to view the nasal passages and sinuses, helping to identify any issues.

74 services44 patients

Diagnostic exam of voice box using a flexible endoscope 31575

This procedure involves a doctor examining your voice box using a flexible endoscope, a thin tube with a light and camera. It's inserted through your nose or mouth to visualize your throat area. It helps detect any abnormalities in your voice box, ensuring optimal vocal health.

74 services59 patients

Hospital Affiliations CMS Care Compare

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

Kadlec Regional Medical Center

Acute Care Hospitals · Richland, WA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number500058

Location888 Swift BlvdRichland, WA 99352 · Benton County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 99352 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

$130.99 typical visit price

range $57.27 – $172.80

Typical copayment $32.74 (range $14.31 – $43.20)

Most-billed visit code 99204

Established Patient

$71.29 typical visit price

range $18.56 – $141.11

Typical copayment $17.82 (range $4.64 – $35.27)

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 4

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

BRENDA L NELSON

Hearing Instrument Specialist

780 SWIFT BLVD STE 301
RICHLAND, WA 99352

Benton County (509) 942-3178

ALEXIS DANIELLE RAPP ARNP

Nurse Practitioner (Family)

780 SWIFT BLVD STE 301
RICHLAND, WA 99352

Benton County (509) 942-3178

MR. MATTHEW A. HUWE PA-C

Physician Assistant

780 SWIFT BLVD STE 301
RICHLAND, WA 99352

Benton County (509) 942-3178

MR. BRADLEY JAMES PETTY MD

Otolaryngology

780 SWIFT BLVD STE 301
RICHLAND, WA 99352

Benton County (509) 942-3178

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 Sean Demars's NPI number?

The NPI number for Sean Demars is 1841261492. It was assigned to this individual provider in the NPPES registry on January 31, 2006.

Where is Sean Demars located?

Sean Demars practices at 780 Swift Blvd Ste 301, Richland, WA 99352. The listed phone number is (599) 942-3178.

What is Sean Demars's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Is Sean Demars enrolled in Medicare?

Yes. Sean Demars 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 Sean Demars's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sean Demars reassigns Medicare benefits to 2 organizations: Kadlec Regional Medical Center (Richland, WA) and Ear Nose & Throat Associates (Billings, MT). 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 Sean Demars's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sean Demars accept?

Health plans from Ambetter Health, Moda Health Plan, Inc., Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Sean Demars 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 Sean Demars affiliated with any hospitals?

According to CMS data, Sean Demars is affiliated with Kadlec Regional Medical Center.

When was this NPI record last updated?

The NPPES record for Sean Demars was last updated on November 11, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.