Alexa Mason, MD
Alexa Mason, MD is a Pediatrics Physician in Seattle, WA, registered under NPI 1003494881.
Getting there
Here is what surrounds this office in Seattle, based on OpenStreetMap data collected Sep 30, 2026. Parking is available about 0.39 mi away at Padelford Parking Garage. There is EV charging 824 ft from the office — useful if you are driving in from out of town. The nearest transit stop is 362 ft away, served by Northeast 45th Street & University Village. A pharmacy sits 384 ft from the entrance (QFC Pharmacy #807), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 316 ft away.
Getting here and what is nearby
Restaurant Ba Bar 50 ft ~1 min
2685 Northeast 46th Street, Seattle 98105
Mo-We 11:00-22:00; Th-Fr 11:00-01:00; Sa 10:00-01:00; Su 10:00-22:00
Coffee Mr. West 163 ft ~1 min
Parking South Garage 151 ft ~1 min
Restaurant Chipotle 142 ft ~1 min
2626 Northeast 46th Street, Seattle 98105
Mo-Su 10:45-22:00
Restaurant Bamboo Sushi 167 ft ~1 min
2675 Northeast Village Lane, Seattle 98105
Mo-Su 11:00-21:00
EV charging Tesla Supercharger 206 ft ~1 min
Transit Montlake Boulevard Northeast & Northeast 45th Street 295 ft ~2 min
Transit Montlake Boulevard Northeast & Northeast 45th Street 315 ft ~2 min
Coffee Mochinut 301 ft ~2 min
4609 Village Court Northeast, Seattle 98105
Coffee Happy Lemon 316 ft ~2 min
2630 Northeast Village Lane, Seattle 98105
Mo-Sa 11:00-21:30; Su 11:00-19:30
Transit Northeast 45th Street & University Village 362 ft ~2 min
Pharmacy QFC Pharmacy #807 384 ft ~2 min
EV charging Electrify America 400 ft ~2 min
Grocery QFC 483 ft ~2 min
Convenience NW Fit 557 ft ~3 min
Parking QFC Parking Garage 785 ft ~3 min
"90 min. max while shopping, no overnight parking"
EV charging 824 ft ~4 min
Hotel Silver Cloud Inn 0.30 mi ~6 min
Convenience Circle K 0.36 mi ~8 min
5100 25th Avenue Northeast, Seattle 98105
Gas station 76 0.36 mi ~8 min
Parking Padelford Parking Garage 0.39 mi ~8 min
4112 Mason Road Northeast, Seattle 98195
Convenience District Market 0.40 mi ~9 min
4295 Little Canoe Channel Northeast, Seattle 98195
Mo-Fr 08:00-22:00; Sa,Su 09:00-15:00
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 61529615 | WA | Pediatrics Physician primary |
This provider holds licence 61529615 issued in WA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Pediatric Medicine
- PAC ID
- 4587064555
- Enrollment ID
- I20240826000049
Medicare enrolment is recorded as approved under the provider type Practitioner - Pediatric Medicine. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Pediatrics covers
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development. NUCC Health Care Provider Taxonomy, code 208000000X
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.
| NPI | 1003494881 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 31, 2021 |
| Last updated | Oct 3, 2024 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MD |
| Practice address |
2671 NE 46TH ST Seattle, WA 98105 (206) 525-8000 Fax (206) 525-8070 |
Number check
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 | 9 | 4 | 8 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 9 | 8 | 8 | 7 |
Sum = 69 · next multiple of 10 = 70 · 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.