DDYMON INC.
DDYMON INC. is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003007162, based in Rochester, MI. It is classified under Hearing Aid Equipment.
Getting there
Here is what surrounds this office in Rochester, based on OpenStreetMap data collected Aug 28, 2026. Parking is available about 0.32 mi away at East Parking Structure. If you arrive early, there is a coffee shop 0.34 mi away.
Getting here and what is nearby
Parking 294 ft ~2 min
Restaurant Georgio's Pizza and Pasta 457 ft ~2 min
117 South Main Street, Rochester 48307
Restaurant Too-Ra-Loo 570 ft ~3 min
139 South Main Street, Rochester 48307
Restaurant Penn Station 744 ft ~3 min
146 South Main Street, Rochester 48307
Gas station Mobil 0.26 mi ~6 min
532 South Rochester Road, Rochester Hills 48307
Convenience Mobil Mart 0.27 mi ~6 min
532 South Rochester Road, Rochester Hills 48307
Parking West Parking Structure 0.30 mi ~6 min
414 Walnut Boulevard, Rochester 48307
Parking East Parking Structure 0.32 mi ~7 min
451 East Street, Rochester 48307
Coffee Bean & Leaf Cafe 0.34 mi ~7 min
Gas station BP 0.36 mi ~8 min
100 West University Drive, Rochester 48307
Convenience BP Shop 0.37 mi ~8 min
100 West University Drive, Rochester 48307
Hotel Royal Park Hotel 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 |
|---|---|---|
| 3501002017 | MI | Hearing Aid Equipment primary |
This provider holds licence 3501002017 issued in MI. 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 Hearing Aid Equipment covers
The manufacture and/or sale of electronic hearing aids, their component parts, and related products and services on a national basis. NUCC Health Care Provider Taxonomy, code 332S00000X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003007162 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Aug 5, 2007 |
| Last updated | Aug 5, 2007 |
| Status | Active |
| Practice address |
71 WALNUT BLVD STE 108 Rochester, MI 48307 (248) 652-1208 |
| Other names |
Dymon Hearing Center Former Legal Name |
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 | 0 | 0 | 7 | 1 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 0 | 5 | 1 | 3 |
Sum = 38 · next multiple of 10 = 40 · 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.