MELLENA GIDAY M.D.
NPI 1063830131
Hospitalist in Seattle, WA
About Mellena Giday M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MELLENA GIDAY M.D. (NPI 1063830131) is an individual hospitalist provider in Seattle, Washington, licensed in Washington (MD60682151) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS, is affiliated with Overlake Hospital Medical Center, and maintains a secondary practice location in Seattle.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 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
Mellena Giday 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 Reassignment
Medicare enrollment records show Mellena Giday reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Bellevue, WA 98004
- Reassigned Medicare billing, Washington enrollment
- 566 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 9
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.
Overlake Hospital Medical Center
Acute Care Hospitals · Bellevue, WAEvergreenhealth Medical Center
Acute Care Hospitals · Kirkland, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98195 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.
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 98195
SEATTLE, WA 98195
SEATTLE, WA 98195
SEATTLE, WA 98195
SEATTLE, WA 98195
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 Mellena Giday's NPI number?
The NPI number for Mellena Giday is 1063830131. It was assigned to this individual provider in the NPPES registry on April 4, 2014.
Where is Mellena Giday located?
Mellena Giday practices at 1959 NE Pacific St Room Bb-527, Seattle, WA 98195. The listed phone number is (206) 543-3605.
What is Mellena Giday's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Mellena Giday enrolled in Medicare?
Yes. Mellena Giday 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 organization bills Medicare for Mellena Giday's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mellena Giday reassigns Medicare benefits to Overlake Medical Clinics LLC (Bellevue, WA). The 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 Mellena Giday's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mellena Giday accept?
Health plans from Ambetter Health and Premera Blue Cross Blue Shield of Alaska list Mellena Giday 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 Mellena Giday affiliated with any hospitals?
According to CMS data, Mellena Giday is affiliated with Overlake Hospital Medical Center and Evergreenhealth Medical Center.
When was this NPI record last updated?
The NPPES record for Mellena Giday was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Mellena Giday, M.D. · NPI 1063830131
Hospitalist physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since April 4, 2014.
## Identity
- **NPI:** 1063830131 (Entity type: Individual)
- **Enumerated:** April 4, 2014
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** MD60682151 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 1959 NE PACIFIC ST, ROOM BB-527, Seattle, WA 98195-6421
- **Phone:** (206) 543-3605
## 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:** Overlake Medical Clinics LLC (NPI 1871745703, Bellevue, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Morehouse School Of Medicine, class of 2014
## Record status
- **NPPES last updated:** March 17, 2018
- **Other identifiers:** Medicaid 1063830131 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1063830131) · Data from the CMS NPPES public registry.