Mercy Tandoh, LMHC
Mercy Tandoh, LMHC is a Mental Health Counselor in Northborough, MA, registered under NPI 1003244849. 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 Northborough, based on OpenStreetMap data collected Sep 13, 2026. Parking is available about 0.41 mi away. If you arrive early, there is a coffee shop 331 ft away.
Getting here and what is nearby
Parking 231 ft ~1 min
Parking 235 ft ~1 min
Restaurant mikaku 255 ft ~1 min
Coffee Lalajava 331 ft ~2 min
Restaurant Bistro Limoncello 300 ft ~2 min
Restaurant Romaine's 336 ft ~2 min
Parking 0.41 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
| Licence | State | Specialty |
|---|---|---|
| 000008585 | MA | Mental Health Counselor primary |
This provider holds licence 000008585 issued in MA. 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 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 | 1003244849 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 14, 2013 |
| Last updated | Nov 12, 2020 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | LMHC |
| Practice address |
300 W MAIN ST Northborough, MA 01532 (508) 834-3062 |
| Mailing address |
4 DAFFODIL CT South Grafton, MA 01560 |
| Other identifiers |
1851681845
· Other (MA) |
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 | 2 | 4 | 4 | 8 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 4 | 8 | 8 | 8 |
Sum = 61 · next multiple of 10 = 70 · 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.