Nelson Mckay, MD
NPI 1558855452 · Family Medicine Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nelson Mckay, MD is a Family Medicine Physician provider in Seattle, WA (NPI 1558855452).
Provider details
- NPI number
- 1558855452
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD61194592 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 52 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 102 | 44 |
| Lisinopril | 75 | 36 |
| Losartan Potassium | 67 | 30 |
| Amlodipine Besylate | 61 | 26 |
| Omeprazole | 61 | 30 |
| Trazodone Hcl | 53 | 15 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-06-15
- Last updated
- 2026-02-27
- Certified
- 2026-02-27
Frequently asked questions
- What is Nelson Mckay's NPI number?
- Nelson Mckay's National Provider Identifier (NPI) is 1558855452, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nelson Mckay's specialty?
- Nelson Mckay is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nelson Mckay located?
- Nelson Mckay's practice location on file with NPPES is 4540 Union Bay Pl Ne, Seattle, WA 98105-4025.
- What is Nelson Mckay's phone number?
- The practice phone number listed in the NPPES registry for Nelson Mckay is (206) 320-3400.
- Does Nelson Mckay accept Medicare?
- Nelson Mckay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nelson Mckay's NPI active?
- Yes — Nelson Mckay's NPI (1558855452) is active in the NPPES registry as of the last update on 2026-02-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.