NATIONAL SINUS INSTITUTE PLLC
NPI 1194968081
Otolaryngology in Los Alamos, NM
About National Sinus Institute Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NATIONAL SINUS INSTITUTE PLLC (NPI 1194968081), doing business as Ent Associates Of Los Alamos, is a healthcare organization registered as an otolaryngology in Los Alamos, New Mexico and active in the NPI registry since April 2009. The organization maintains 23 additional practice locations and lists Adrienne Summers, Credentialing Manager, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 5
Other Names 1
Secondary Practice Locations 23
Other Identifiers 4
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
National Sinus Institute Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by December 31, 2026
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
36Medicare enrollment records show 36 clinicians reassign Medicare billing to National Sinus Institute PLLC, which bills Medicare for the services they deliver. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 2
Nearest to this location (20)
See all 36Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 National Sinus Institute PLLC's NPI number?
The NPI number for National Sinus Institute PLLC is 1194968081. It was assigned to this organization in the NPPES registry on April 8, 2009. The provider was formerly known as ENT Associates of Los Alamos.
Where is National Sinus Institute PLLC located?
National Sinus Institute PLLC is located at 3917 West Rd, Los Alamos, NM 87544. The listed phone number is (505) 661-4147.
What is National Sinus Institute PLLC's specialty?
The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.
Is National Sinus Institute PLLC enrolled in Medicare?
Yes. National Sinus Institute PLLC is registered in the Medicare PECOS enrollment system.
When is National Sinus Institute PLLC's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (New Mexico, Clinic/Group Practice) is due for revalidation by December 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through National Sinus Institute PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 36 clinicians in 2 Medicare specialties reassign their Medicare billing to National Sinus Institute PLLC. A 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 the clinician's services. The largest specialties are Nurse Practitioner (27) and Otolaryngology (9). Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does National Sinus Institute PLLC accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 6 other insurers list National Sinus Institute PLLC 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 National Sinus Institute PLLC was last updated on August 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# National Sinus Institute Pllc · NPI 1194968081
Otolaryngology organization in Los Alamos, New Mexico. Organization record, active in the CMS NPPES registry since April 8, 2009.
## Identity
- **NPI:** 1194968081 (Entity type: Organization)
- **Enumerated:** April 8, 2009
- **Primary specialty:** Otolaryngology · taxonomy 207Y00000X
- **Also known as:** ENT Associates of Los Alamos (Former Legal Business Name)
- **Organization subpart:** No
- **Authorized official:** Adrienne Summers, CREDENTIALING MANAGER
## Practice location
- **Address:** 3917 WEST RD, Los Alamos, NM 87544-2275
- **Phone:** (505) 661-4147 · **Fax:** (505) 661-4199
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** December 31, 2026 (Non-DME Part B, New Mexico, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 36 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (27), Otolaryngology (9); [full list](https://npiprofile.com/npi/1194968081/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 19, 2026
- **Other identifiers:** Medicaid 4405144 (UT); Medicaid 148366 (AZ); Medicaid 355907201 (TX); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1194968081) · Data from the CMS NPPES public registry.