Jeffrey Clark, D.M.D.
Jeffrey Clark, D.M.D. is a provider specialising in General Practice Dentistry in Conroe, TX, registered under NPI 1003100934.
Getting there
Here is what surrounds this office in Conroe, based on OpenStreetMap data collected Sep 5, 2026. Parking is available about 0.48 mi away. A pharmacy sits 0.39 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.00 mi away.
Getting here and what is nearby
Coffee Starbucks 0.00 mi ~1 min
Restaurant Jack in the Box 333 ft ~2 min
Restaurant Jason's Deli 340 ft ~2 min
1400 North Loop 336 West, Conroe 77304
Restaurant KFC 503 ft ~2 min
Grocery Walmart Supercenter 522 ft ~2 min
1407 North Loop 336 West, Conroe 77304
06:00-23:00
Gas station Kroger 0.21 mi ~5 min
Grocery Kroger 0.28 mi ~6 min
2222 Interstate 45 North, Conroe 77301
Mo-Su 06:00-23:00
Parking 0.33 mi ~7 min
Hotel Holiday Inn Express & Suites 0.35 mi ~8 min
Pharmacy Walgreens 0.39 mi ~8 min
Hotel Hampton Inn & Suites 0.40 mi ~9 min
Parking 0.47 mi ~10 min
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 |
|---|---|---|
| 27909 | TX | General Practice Dentistry primary |
This provider holds licence 27909 issued in TX. 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 General Practice covers
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs. NUCC Health Care Provider Taxonomy, code 1223G0001X
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 | 1003100934 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 8, 2011 |
| Last updated | Dec 20, 2012 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | D.M.D. |
| Practice address |
1403 N LOOP 336 W Conroe, TX 77304 (936) 539-4867 |
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 | 0 | 0 | 9 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 0 | 0 | 9 | 6 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
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.