Constance Johnson
Constance Johnson is an Addiction (Substance Use Disorder) Counselor in Milford, DE, registered under NPI 1003441494.
Getting there
Here is what surrounds this office in Milford, based on OpenStreetMap data collected Sep 27, 2026. Parking is available about 966 ft away. A pharmacy sits 0.44 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.48 mi away.
Getting here and what is nearby
Parking 630 ft ~3 min
Parking 670 ft ~3 min
Parking 966 ft ~4 min
Hotel Comfort Inn & Suites 1,013 ft ~4 min
Pharmacy Rite Aid 0.21 mi ~5 min
Restaurant Popeyes 0.21 mi ~5 min
697 North Dupont Boulevard, Milford 19963
10:30-20:00
Restaurant Dunkin' 0.24 mi ~5 min
675 North Dupont Boulevard, Milford 19963
04:30-22:00
Restaurant McDonald's 0.30 mi ~6 min
653 North Dupont Highway, Milford 19963-1001
Mo-Th,Su 05:00-24:00; Fr-Sa 05:00-01:00
Grocery ALDI 0.36 mi ~8 min
696 North Dupont Boulevard, Milford 19963
Mo-Su 09:00-20:00
Pharmacy CVS Pharmacy 0.44 mi ~9 min
Gas station Southern States 0.46 mi ~10 min
Coffee Starbucks 0.48 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
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 Addiction (Substance Use Disorder) covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YA0400X
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 | 1003441494 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 6, 2020 |
| Last updated | Mar 6, 2020 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
769 E MASTEN CIR Milford, DE 19963 (302) 225-9267 |
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 | 4 | 1 | 4 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 4 | 2 | 4 | 9 |
Sum = 56 · next multiple of 10 = 60 · check digit = 4 · actual last digit = 4
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.