NINA T WILLOW M.D.
NPI 1225163322
Family Medicine in Everett, WA
About Nina T Willow M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NINA T WILLOW M.D. (NPI 1225163322) is an individual family medicine provider in Everett, Washington, licensed in Washington (MD00040151) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS and is a graduate of Tufts University School Of Medicine (1995).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 1
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
Nina T Willow 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.
Medicare Billing Reassignments
4Medicare enrollment records show Nina Willow reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Everett, WA 98201
- Reassigned Medicare billing, Washington enrollment
- 1,285 clinicians in this Medicare group
Everett, WA 98201
- Reassigned Medicare billing, Washington enrollment
- 2,678 clinicians in this Medicare group
Bellevue, WA 98004
- Reassigned Medicare billing, Washington enrollment
- 566 clinicians in this Medicare group
Seattle, WA 98122
- Reassigned Medicare billing, Washington enrollment
- 911 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
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98201 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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 Nina Willow's NPI number?
The NPI number for Nina Willow is 1225163322. It was assigned to this individual provider in the NPPES registry on February 22, 2007. The provider is also known as Nina T Greenblatt M.D..
Where is Nina Willow located?
Nina Willow practices at 3927 Rucker Ave, Everett, WA 98201. The listed phone number is (425) 259-9066.
What is Nina Willow's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Nina Willow enrolled in Medicare?
Yes. Nina Willow 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 Nina Willow's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nina Willow reassigns Medicare benefits to 4 organizations: Optum Care Washington PLLC (Everett, WA), Kaiser Foundation Health Plan Of Washington (Everett, WA), Overlake Medical Clinics LLC (Bellevue, WA) and The Polyclinic PLLC (Seattle, WA). 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 Nina Willow's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nina Willow accept?
Health plans from Ambetter Health and Providence Health Plan list Nina Willow 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 Nina Willow was last updated on April 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Nina T Willow, M.D. · NPI 1225163322
Family Medicine physician in Everett, Washington. Individual provider, active in the CMS NPPES registry since February 22, 2007.
## Identity
- **NPI:** 1225163322 (Entity type: Individual)
- **Enumerated:** February 22, 2007
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** MD00040151 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 3927 RUCKER AVE, Everett, WA 98201-4833
- **Phone:** (425) 259-9066
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Optum Care Washington PLLC (NPI 1831186766, Everett, WA); Kaiser Foundation Health Plan Of Washington (NPI 1386935351, Everett, WA); Overlake Medical Clinics LLC (NPI 1871745703, Bellevue, WA); The Polyclinic PLLC (NPI 1174594634, Seattle, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Tufts University School Of Medicine, class of 1995
## Record status
- **NPPES last updated:** April 3, 2026
- **Other identifiers:** Medicaid 8290082 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1225163322) · Data from the CMS NPPES public registry.