SANDRA DEMARS MD
NPI 1811212749
Internal Medicine in Seattle, WA
About Sandra Demars Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SANDRA DEMARS MD (NPI 1811212749) is an individual internal medicine provider in Seattle, Washington, licensed in Washington (MD60305685) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS, is affiliated with Olympic Medical Center, and maintains 6 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 6
Accepted 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
Sandra Demars Md 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.
Medicare Billing Reassignments
9Medicare enrollment records show Sandra Demars reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Seattle, WA 98109
- Reassigned Medicare billing, Washington enrollment
- 915 clinicians in this Medicare group
Silverdale, WA 98383
- Reassigned Medicare billing, Washington enrollment
- Also billed through NPI 1356492953 (Washington)
- 208 clinicians in this Medicare group
University Place, WA 98466
- Reassigned Medicare billing, Washington enrollment
- 38 clinicians in this Medicare group
Port Angeles, WA 98362
- Reassigned Medicare billing, Washington enrollment
- 112 clinicians in this Medicare group
Longview, WA 98632
- Reassigned Medicare billing, Washington enrollment
- 308 clinicians in this Medicare group
Ilwaco, WA 98624
- Reassigned Medicare billing, Washington enrollment
- 25 clinicians in this Medicare group
Ketchikan, AK 99901
- Reassigned Medicare billing, Alaska enrollment
- Also billed through NPI 1396705539 (Alaska)
- 156 clinicians in this Medicare group
Las Cruces, NM 88011
- Reassigned Medicare billing, Washington enrollment
- 116 clinicians in this Medicare group
Anchorage, AK 99508
- Reassigned Medicare billing, Alaska enrollment
- 56 clinicians in this Medicare group
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 8
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Olympic Medical Center
Acute Care Hospitals · Port Angeles, WAJefferson Healthcare
Critical Access Hospitals · Port Townsend, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98108 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SEATTLE, WA 98108
SEATTLE, WA 98108
SEATTLE, WA 98108
SEATTLE, WA 98108
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 Sandra Demars's NPI number?
The NPI number for Sandra Demars is 1811212749. It was assigned to this individual provider in the NPPES registry on April 4, 2010.
Where is Sandra Demars located?
Sandra Demars practices at 1660 S Columbian Way, Seattle, WA 98108. The listed phone number is (206) 762-1010.
What is Sandra Demars's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Sandra Demars enrolled in Medicare?
Yes. Sandra 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 Sandra Demars's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sandra Demars reassigns Medicare benefits to 9 organizations: South Sound Inpatient Physicians PLLC (Seattle, WA), Jefferson County Public Hospital District No 2 (Silverdale, WA), F & m Healthcare, LLC (University Place, WA), Olympic Medical Physicians (Port Angeles, WA), Peacehealth (Longview, WA) and 4 more organizations, listed in the Medicare section above. 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 Sandra Demars's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sandra Demars accept?
Health plans from Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Sandra 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 Sandra Demars affiliated with any hospitals?
According to CMS data, Sandra Demars is affiliated with Olympic Medical Center and Jefferson Healthcare.
When was this NPI record last updated?
The NPPES record for Sandra Demars was last updated on September 30, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Sandra Demars, MD · NPI 1811212749
Internal Medicine physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since April 4, 2010.
## Identity
- **NPI:** 1811212749 (Entity type: Individual)
- **Enumerated:** April 4, 2010
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD60305685 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 1660 S COLUMBIAN WAY, Seattle, WA 98108-1532
- **Phone:** (206) 762-1010
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 9 organizations under Medicare reassignment (form CMS-855R): South Sound Inpatient Physicians PLLC (NPI 1699917369, Seattle, WA); Jefferson County Public Hospital District No 2 (NPI 1467664631, Silverdale, WA); F & m Healthcare, LLC (NPI 1861145120, University Place, WA); Olympic Medical Physicians (NPI 1427081967, Port Angeles, WA); Peacehealth (NPI 1720056187, Longview, WA); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Js Weill Medical College, Cornell University, class of 2010
## Record status
- **NPPES last updated:** September 30, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1811212749) · Data from the CMS NPPES public registry.