Jin-nyung Chang
Jin-nyung Chang is a provider specialising in Dentist in Worcester, MA, registered under NPI 1003114018.
Getting there
Here is what surrounds this office in Worcester, based on OpenStreetMap data collected Sep 6, 2026. Parking is available about 0.30 mi away. The nearest transit stop is 0.50 mi away. A pharmacy sits 0.48 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.34 mi away.
Getting here and what is nearby
Parking 0.25 mi ~6 min
33 Kendall Street
Parking Gateway Garage 0.26 mi ~6 min
29 Garden Street
Parking 0.30 mi ~6 min
49 Kendall Street
Hotel Hampton Inn & Suites 0.33 mi ~7 min
Coffee Fuel America - Grove Street 0.34 mi ~7 min
100 Grove Street, Worcester 01605
Mo-Sa 08:00-18:00
Hotel Courtyard Worcester 0.35 mi ~7 min
Restaurant Ralph's Diner 0.35 mi ~8 min
Restaurant The Fix Burger Bar 0.36 mi ~8 min
108 Grove Street, Worcester 01605
Su-Th 12:00-22:00; Fr-Sa 12:00-24:00
Restaurant Northworks Bar & Grille 0.37 mi ~8 min
106 Grove Street, Worcester 01605
Mo-Th 11:30-23:30; Fr 11:30-00:30; Sa 16:00-00:30; Su 16:00-21:00
Transit 0.38 mi ~8 min
Convenience Belmont Convenience 0.39 mi ~8 min
Pharmacy CVS Pharmacy 0.48 mi ~10 min
256 Lincoln Street, Worcester 01605
Mo-Fr 09:00-20:00; Sa 10:00-18:00; Su 10:00-17:00
Transit 0.50 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 |
|---|---|---|
| DN1855615 | MA | Dentist primary |
This provider holds licence DN1855615 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 Dentist covers
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist. NUCC Health Care Provider Taxonomy, code 122300000X
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 | 1003114018 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 1, 2011 |
| Last updated | Mar 1, 2011 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
129 LINCOLN ST Worcester, MA 01605 (508) 754-5891 |
| Mailing address |
325 SPEEN ST APT 607 Natick, MA 01760 |
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 | 1 | 1 | 4 | 0 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 1 | 8 | 0 | 2 |
Sum = 42 · next multiple of 10 = 50 · check digit = 8 · actual last digit = 8
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.