Sinchen Mcduffy, LPC
Sinchen Mcduffy, LPC is a Mental Health Counselor in Lewes, DE, registered under NPI 1003377219.
Getting there
Here is what surrounds this office in Lewes, based on OpenStreetMap data collected Sep 22, 2026. Parking is available about 888 ft away.
Getting here and what is nearby
Hotel Red Mill Inn 344 ft ~2 min
16218 Coastal Highway, Lewes 19958
Parking 837 ft ~4 min
Parking 858 ft ~4 min
Parking 888 ft ~4 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 |
|---|---|---|
| PC-0000903 | DE | Mental Health Counselor primary |
This provider holds licence PC-0000903 issued in DE. 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 - Mental Health Counselor
- PAC ID
- 2860963956
- Enrollment ID
- I20260609004094
Medicare enrolment is recorded as approved under the provider type Practitioner - Mental Health Counselor. 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 Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YM0800X
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 | 1003377219 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 29, 2019 |
| Last updated | Sep 6, 2020 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | LPC |
| Practice address |
16192 COASTAL HWY Lewes, DE 19958 (302) 559-4497 Fax (302) 645-1280 |
| Mailing address |
PO BOX 191 Rockland, DE 19732 |
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 | 7 | 7 | 2 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 7 | 5 | 2 | 2 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
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.