William Addo
William Addo is a provider specialising in Health Educator in Staten Island, NY, registered under NPI 1003304825.
Getting there
Here is what surrounds this office in Staten Island, based on OpenStreetMap data collected Sep 17, 2026. Parking is available about 498 ft away. The nearest transit stop is 185 ft away, served by Castleton Avenue & Bement Avenue. A pharmacy sits 0.35 mi from the entrance (B&T Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.42 mi away.
Getting here and what is nearby
Transit Bement Avenue & Castleton Avenue 110 ft ~1 min
Transit Castleton Avenue & Bement Avenue 129 ft ~1 min
Transit Castleton Avenue & Bement Avenue 185 ft ~1 min
Parking 430 ft ~2 min
Parking 452 ft ~2 min
Parking 498 ft ~2 min
Restaurant Sushi Wen 523 ft ~2 min
856 Castleton Avenue, Staten Island 10310
Mo-Th 11:00-22:30; Fr-Sa 11:00-23:00; Su 12:00-22:00
Convenience Vodega Deli & Grocery 738 ft ~3 min
Pharmacy Castleton Chemists Pharmacy 722 ft ~3 min
Convenience Lyu Deli & Grocery 898 ft ~4 min
Grocery Food Dynasty Supermarket 0.23 mi ~5 min
Pharmacy Brighton Community Pharmacy 0.24 mi ~5 min
Convenience One Stop African-Caribbean Market 0.28 mi ~6 min
1602 Castleton Avenue
Pharmacy B&T Pharmacy 0.35 mi ~7 min
Coffee Northside Coffee 0.38 mi ~8 min
Restaurant Duffy's 0.38 mi ~8 min
650 Forest Avenue, Staten Island 10310
Su 12:00-22:00, Mo-We 11:30-22:30, Th 11:30-23:00, Fr-Sa 11:30-24:00
Restaurant Supreme Burger 0.38 mi ~8 min
646 Forest Avenue, Staten Island 10310
Su-Th 11:00-22:45; Fr,Sa 11:00-23:45
Gas station Shell 0.39 mi ~8 min
Coffee Redemption Coffee 0.41 mi ~9 min
Gas station Citgo 0.41 mi ~9 min
Coffee Vivi Bubble Tea 0.42 mi ~9 min
Grocery Pastosa Ravioli 0.42 mi ~9 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 Health Educator covers
Health educators work in a variety of settings providing education to individuals or groups of individuals on healthy behaviors, wellness, and health-related topics with the goal of preventing diseases and health problems. Health educators generally require a bachelor's degree and may receive additional training, such as through mentoring, internships, or volunteer work. NUCC Health Care Provider Taxonomy, code 174H00000X
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 | 1003304825 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 26, 2018 |
| Last updated | Apr 26, 2018 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
909 CASTLETON AVE Staten Island, NY 10310 (917) 922-3938 Fax (718) 727-8308 |
| Mailing address |
18 CLYDE PL Staten Island, NY 10301 |
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 | 3 | 0 | 4 | 8 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 0 | 8 | 8 | 4 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.