Helene Mansfield, RN, MN
Helene Mansfield, RN, MN is a Registered Nurse in Seattle, WA, registered under NPI 1003154832. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Seattle, based on OpenStreetMap data collected Sep 8, 2026. Parking is available about 0.20 mi away at Elizabeth James House. There is EV charging 0.38 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 554 ft away, served by 19th Avenue East & East Republican Street. A pharmacy sits 0.46 mi from the entrance (Genoa Healthcare), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.25 mi away.
Getting here and what is nearby
Parking 250 ft ~1 min
Transit 19th Avenue East & East Harrison Street 506 ft ~2 min
Transit 19th Avenue East & East Harrison Street 542 ft ~3 min
Transit 19th Avenue East & East Republican Street 554 ft ~3 min
Parking 622 ft ~3 min
Coffee Hello Robin 702 ft ~3 min
Convenience Cone & Steiner 721 ft ~3 min
Restaurant Rocket Taco 783 ft ~3 min
550 19th Avenue East, Seattle 98112
Mo-Su 11:30-21:00
Restaurant Zeeks Pizza - Capitol Hill 913 ft ~4 min
1830 East Mercer Street, Seattle 98112
Mo-Th 11:00-21:00; Fr-Su 12:00-21:00
Coffee Fuel 928 ft ~4 min
Restaurant Monsoon 1,004 ft ~4 min
615 19th Avenue East, Seattle 98112
Mo-Fr 11:30-22:00; Sa 10:00-24:00; Su 10:00-23:00
Parking Elizabeth James House 0.20 mi ~5 min
Coffee Yeobo Cafe and Bar 0.25 mi ~5 min
2332 East Madison Street, Seattle 98112
Mo-Tu, Th-Fr 07:00-21:00; Sa-Su 08:00-21:00
Grocery Spice SPC 0.29 mi ~6 min
Grocery Safeway 0.32 mi ~7 min
2201 East Madison Street, Seattle 98122
Mo-Su 05:00-01:00
Pharmacy Walgreens 0.34 mi ~7 min
Convenience Petty Snacks 0.36 mi ~8 min
1465 East Republican Street, Seattle 98112
EV charging ChargePoint 0.38 mi ~8 min
Grocery Safeway 0.39 mi ~8 min
1410 East John Street, Seattle 98112
Mo-Su 05:00-00:00
Convenience 7-Eleven 0.45 mi ~9 min
Pharmacy Genoa Healthcare 0.46 mi ~10 min
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 |
|---|---|---|
| 00118674 | WA | Registered Nurse primary |
This provider holds licence 00118674 issued in WA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Registered Nurse covers
(1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive either a diploma from a hospital program, an associate degree in nursing (A.D.N.) or a Bachelor of Science degree in nursing (B.S.N.), who is licensed or certified by the state, and is practicing within the scope of that license or certification. R.N.'s assist patient in recovering and maintaining their physical or mental health. They assist physicians during treatments and examinations and administer medications. (2) A provider who is trained and educated in a formal nursing education program at an accredited school of nursing, passes a national certification examination, and is licensed by the state to practice nursing. The individual provides nursing services to patients or clients in areas such as health promotion, disease prevention, acute and chronic care and restoration and maintenance of health across the life span. NUCC Health Care Provider Taxonomy, code 163W00000X
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 | 1003154832 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 29, 2013 |
| Last updated | Jan 29, 2013 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | RN, MN |
| Practice address |
301 21ST AVE E Seattle, WA 98112 (206) 252-2200 |
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 | 1 | 5 | 4 | 8 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 5 | 8 | 8 | 6 |
Sum = 58 · next multiple of 10 = 60 · check digit = 2 · actual last digit = 2
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.