Lydia Chen, D.M.D.
Lydia Chen, D.M.D. is a provider specialising in Dentist in Plainview, NY, registered under NPI 1003097601. 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 Plainview, based on OpenStreetMap data collected Sep 5, 2026. Parking is available about 0.48 mi away. A pharmacy sits 0.20 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.46 mi away.
Getting here and what is nearby
Restaurant Pasta-eria 603 ft ~3 min
Restaurant Bagel Boss 620 ft ~3 min
432 South Oyster Bay Road, Hicksville 11801
Restaurant Greek Xpress 789 ft ~3 min
441 South Oyster Bay Road, Plainview 11803
Pharmacy Walgreens 940 ft ~4 min
Grocery Trader Joe's 957 ft ~4 min
425 South Oyster Bay Road, Plainview 11803
Mo-Su 08:00-21:00
Pharmacy CVS Pharmacy 0.20 mi ~4 min
Gas station BP 0.26 mi ~6 min
Parking 0.26 mi ~6 min
Parking 0.28 mi ~6 min
Coffee Starbucks 0.33 mi ~7 min
Coffee Center Coffee Shop 0.46 mi ~10 min
363 South Oyster Bay Road, Plainview 11803
Mo-Su 06:00-15:00
Grocery ShopRite 0.46 mi ~10 min
444 Woodbury Road, Plainview 11803
Mo-Su 06:00-23:00
Parking 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
| Licence | State | Specialty |
|---|---|---|
| 041719 | NY | Dentist primary |
This provider holds licence 041719 issued in NY. 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 | 1003097601 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 25, 2007 |
| Last updated | Nov 25, 2007 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | D.M.D. |
| Practice address |
461 S OYSTER BAY RD Plainview, NY 11803 (516) 931-3924 |
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 | 9 | 7 | 6 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 9 | 5 | 6 | 0 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
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.