William Heatherington, SLP-ASSISTANT
William Heatherington, SLP-ASSISTANT is a Speech-Language Assistant in Dallas, TX, registered under NPI 1003646027.
Getting there
Here is what surrounds this office in Dallas, based on OpenStreetMap data collected Oct 5, 2026. Parking is available about 0.45 mi away. The nearest transit stop is 539 ft away, served by Coit @ IH 635 - S - FS. A pharmacy sits 0.34 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.26 mi away.
Getting here and what is nearby
Transit Coit @ Banner - N - FS 218 ft ~1 min
Transit Coit @ IH 635 - N - NS 413 ft ~2 min
Transit Coit @ IH 635 - S - FS 539 ft ~3 min
Convenience Circle K 539 ft ~3 min
Parking 550 ft ~3 min
12750 Merit Drive
Restaurant Taco Casa 515 ft ~2 min
12950 Coit Road, Dallas 75243
Coffee Konnie’s Korner Deli 560 ft ~3 min
12801 North Central Expressway, 75243
Mo-Fr 07:30-14:30; Sa-Su off
Gas station Exxon 569 ft ~3 min
12950 Coit Road
Restaurant Jack in the Box 671 ft ~3 min
Gas station Costco Gasoline 747 ft ~3 min
8055 Churchill Way, Dallas 75251
Mo-Fr 06:00-22:00; Sa 06:00-20:30; Su 06:00-19:30
Pharmacy Costco Pharmacy 880 ft ~4 min
8055 Churchill Way, Dallas 75251
Mo-Fr 09:00-19:00; Sa 09:00-18:00
Hotel The Westin Dallas Park Central 1,010 ft ~4 min
Coffee Starbucks 0.26 mi ~6 min
Convenience AK C Store 0.27 mi ~6 min
7995 LBJ Freeway
Hotel Hyatt Place 0.27 mi ~6 min
Restaurant Benihana 0.27 mi ~6 min
Hotel Comfort Inn 0.33 mi ~7 min
Pharmacy CVS Pharmacy 0.34 mi ~7 min
Parking 0.36 mi ~8 min
12700 Park Central Drive
Parking 0.45 mi ~9 min
12700 Park Central 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 |
|---|---|---|
| 43849 | TX | Speech-Language Assistant primary |
This provider holds licence 43849 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 Speech-Language Assistant covers
Definition to come... NUCC Health Care Provider Taxonomy, code 2355S0801X
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 | 1003646027 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 5, 2024 |
| Last updated | Aug 5, 2024 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | SLP-ASSISTANT |
| Practice address |
12770 COIT RD STE 870 Dallas, TX 75251 (972) 756-0500 |
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 | 6 | 4 | 6 | 0 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 4 | 3 | 0 | 4 |
Sum = 43 · next multiple of 10 = 50 · 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.