Shen Ling, D.M.D
Shen Ling, D.M.D is a provider specialising in Periodontics in Torrance, CA, registered under NPI 1003029927. 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 Torrance, based on OpenStreetMap data collected Aug 31, 2026. Parking is available about 0.43 mi away. The nearest transit stop is 0.23 mi away. A pharmacy sits 423 ft from the entrance (Concierge Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.27 mi away.
Getting here and what is nearby
Parking 119 ft ~1 min
Restaurant Five Guys 172 ft ~1 min
Restaurant Einstein Bros. Bagels 185 ft ~1 min
Restaurant Subway 197 ft ~1 min
23211 Hawthorne Boulevard, Torrance 90505
Mo-Fr 08:00-22:00; Sa-Su 08:00-20:00
Transit Lomita/Hawthorne 287 ft ~2 min
Convenience Shell 316 ft ~2 min
Gas station Shell 300 ft ~2 min
Parking 300 ft ~2 min
Transit Lomita/Hawthorne 410 ft ~2 min
Pharmacy Concierge Pharmacy 423 ft ~2 min
Transit 0.23 mi ~5 min
Convenience 7-Eleven 0.24 mi ~5 min
Coffee The Coffee Bean & Tea Leaf 0.27 mi ~6 min
Mo-Th 05:30-20:30; Fr 05:00-21:00; Sa 06:00-20:00; Su 06:00-19:30
Parking 0.43 mi ~9 min
3323 Skypark Drive
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 |
|---|---|---|
| 42742 | CA | Periodontics primary |
This provider holds licence 42742 issued in CA. 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 Periodontics covers
That specialty of dentistry which encompasses the prevention, diagnosis and treatment of diseases of the supporting and surrounding tissues of the teeth or their substitutes and the maintenance of the health, function and esthetics of these structures and tissues. NUCC Health Care Provider Taxonomy, code 1223P0300X
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 | 1003029927 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 7, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | D.M.D |
| Practice address |
23244 HAWTHORNE BLVD Torrance, CA 90505 (310) 373-8520 Fax (310) 373-0621 |
| Mailing address |
25 HORSESHOE LANE Rolling Hills Estates, CA 90274 |
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 | 2 | 9 | 9 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 2 | 9 | 9 | 4 |
Sum = 53 · next multiple of 10 = 60 · check digit = 7 · actual last digit = 7
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.