Sean Demars, M.D.
Sean Demars, M.D. is an Otolaryngology Physician in Richland, WA, registered under NPI 1841261492.
Getting there
The practice address on file is 780 SWIFT BLVD STE 301, Richland, WA 99352. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| MD61139453 | WA | Otolaryngology Physician primary |
| AP30007073 | WA | Otolaryngology Physician |
| MED-PHYS-LIC-18285 | MT | Otolaryngology Physician |
Licences are recorded in 2 states: WA, MT. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Otolaryngology
- PAC ID
- 1254512973
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Montana | I20121004000254 | Practitioner - Otolaryngology |
| Washington | I20210809003008 | Practitioner - Otolaryngology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Otolaryngology. There are 2 separate enrolment records across 2 states (MT, WA). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 2 states
This provider holds licences in 2 states: Montana and Washington. The practice address on file is in Richland, WA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- MD61139453
- Specialty
- Otolaryngology Physician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Otolaryngology covers
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. NUCC Health Care Provider Taxonomy, code 207Y00000X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207Y00000X | Otolaryngology Physician | MD61139453 | WA | primary |
| 207Y00000X | Otolaryngology Physician | AP30007073 | WA | |
| 207Y00000X | Otolaryngology Physician | MED-PHYS-LIC-18285 | MT |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1841261492 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 31, 2006 |
| Last updated | Nov 11, 2021 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
780 SWIFT BLVD STE 301 Richland, WA 99352 (599) 942-3178 Fax (509) 946-1735 |
| Mailing address |
550 GAGE BLVD STE 101 Richland, WA 99352 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 8 | 4 | 1 | 2 | 6 | 1 | 4 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 8 | 1 | 4 | 6 | 2 | 4 | 9 |
Sum = 68 · next multiple of 10 = 70 · check digit = 2 · actual last digit = 2
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.