Individual provider

Mikhaila Marecki, ARNP

Women's Health Nurse Practitioner Adult Health Nurse Practitioner Medicare enrolled

Mikhaila Marecki, ARNP is a Women's Health Nurse Practitioner in Seattle, WA, registered under NPI 1003403841. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.

Getting there

The practice address on file is 825 EASTLAKE AVE E, Seattle, WA 98109. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.

825 EASTLAKE AVE E, Seattle, WA 98109 Open in Google Maps →

Credentials and Medicare

State licence
LicenceStateSpecialty
AP61567246 WA Women's Health Nurse Practitioner primary
RN2328538 MA Adult Health Nurse Practitioner

Licences are recorded in 2 states: WA, MA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.

Medicare (PECOS)
Status
Approved
Provider type
Practitioner - Nurse Practitioner
PAC ID
3678980992

Medicare enrolment is recorded as approved under the provider type Practitioner - Nurse Practitioner. This means the provider is enrolled to bill Medicare, though 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: Massachusetts and Washington. The practice address on file is in Seattle, 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.

MA Massachusetts
Licence
RN2328538
Specialty
Adult Health Nurse Practitioner
Verify with the MA board →
WA Washington practice address
Licence
AP61567246
Specialty
Women's Health Nurse Practitioner
Verify with the WA board →

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 Women's Health covers

Definition to come... NUCC Health Care Provider Taxonomy, code 363LW0102X
Physician Assistants & Advanced Practice Nursing Providers Nurse Practitioner Women's Health

All registered taxonomy codes

This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.

CodeSpecialtyLicenceState
363LW0102X Women's Health Nurse Practitioner Women's Health AP61567246 WA primary
363LA2200X Adult Health Nurse Practitioner Adult Health RN2328538 MA

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.

NPI1003403841 valid check digit
Entity typeIndividual (NPI-1)
Enumeration dateDec 28, 2020
Last updatedJan 7, 2025
StatusActive
Sole proprietorNo
CredentialARNP
Practice address 825 EASTLAKE AVE E
Seattle, WA 98109
(206) 520-5000
Mailing address PO BOX 50095
Seattle, WA 98145
This record was updated on Jan 7, 2025, which is recent enough that the contact details are likely still accurate.

Number check

1003403841 passes the NPI check digit test The final digit 1 matches the value computed from the first nine digits, so this is a well-formed NPI.
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 0 0 3 4 0 3 8 4
Doubled? ×2 ×2 ×2 ×2 ×2 ×2 ×2
Value 8 0 8 8 0 2 0 0 3 8 0 6 8 8

Sum = 59 · next multiple of 10 = 60 · check digit = 1 · actual last digit = 1

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.

Common questions

What is NPI number 1003403841?
NPI 1003403841 is the National Provider Identifier assigned to Mikhaila Marecki, ARNP in Seattle, WA. It is a 10-digit number issued by the Centers for Medicare & Medicaid Services and used on claims, referrals, and prescriptions to identify the provider.
What does Women's Health cover?
Definition to come...
How do I contact Mikhaila Marecki, ARNP?
The phone number on file with NPPES is (206) 520-5000, last updated Jan 7, 2025. Because NPPES is only updated when a provider files a change, call ahead to confirm the number and the current practice address before visiting.
Does Mikhaila Marecki, ARNP accept Medicare?
This NPI has an approved Medicare enrolment in PECOS, which means the provider is enrolled to bill Medicare. Enrolment does not guarantee they are accepting new Medicare patients — verify directly with the office.
Is NPI 1003403841 a valid number?
Yes. 1003403841 passes the Luhn check digit validation that CMS uses for NPI numbers, and it resolves to an active record in the registry.
How to use this page. Everything here comes from public federal records. Tips Health does not verify quality of care, confirm that a licence is currently active, or check malpractice history, and accepts no fees for placement. A listing is not a recommendation. Verify independently before seeking care.