Quick answers
- Does Mercy N. Wainaina accept Medicare assignment?
- Medicare's clinician data says Mercy N. Wainaina may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Mercy N. Wainaina see?
- In 2024, CMS data shows 36 Original Medicare patients and 468 services for Mercy N. Wainaina. This counts Original Medicare only and measures volume, not quality.
- What is Mercy N. Wainaina's NPI number?
- 1427605609. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mercy N. Wainaina, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 36 |
|---|---|
| Services billed to Medicare | 468 |
| Different services or procedures | 5 |
| Participating Medicare provider | Yes |
| Average age of these patients | 62 |
Most frequent services
- Psychotherapy with evaluation and management visit, 30 minutes (90833)232 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)230 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- Depression75%
- Anxiety75%
- High cholesterol58%
- High blood pressure50%
- Arthritis36%
Practice locations
Addresses where Mercy N. Wainaina is enrolled with Medicare (CMS data updated October 2, 2026).
- 4610 200th St SW, Suite JLynnwood, WA 98036 (253) 600‑9339
- 4630 200th St SW, Suite BLynnwood, WA 98036
Group practices
Medicare enrollment lists Mercy N. Wainaina as a member of this group (CMS data updated October 2, 2026).
- New Era Mental Health PLLC4 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Lynnwood
Clinicians with the same Medicare primary specialty in Lynnwood, WA — not a recommendation.
Other clinicians in New Era Mental Health PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1427605609 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians