COMPANION DX REFERENCE LAB, LLC
COMPANION DX REFERENCE LAB, LLC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003180027, based in Houston, TX. It is classified under Clinical Medical Laboratory.
Getting there
Here is what surrounds this office in Houston, based on OpenStreetMap data collected Sep 10, 2026. Parking is available about 0.48 mi away.
Getting here and what is nearby
Parking 754 ft ~3 min
Restaurant Super La Mexicana 952 ft ~4 min
Restaurant Don Pepe 0.24 mi ~5 min
9920 Stella Link Road, Houston 77025
Parking 0.38 mi ~8 min
Convenience Sunny's Food Store 0.47 mi ~10 min
Gas station Sunny's Food Store 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 |
|---|---|---|
| 45D2034771 | TX | Clinical Medical Laboratory primary |
This provider holds licence 45D2034771 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 Clinical Medical Laboratory covers
(1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology. NUCC Health Care Provider Taxonomy, code 291U00000X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003180027 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Mar 8, 2012 |
| Last updated | Oct 6, 2014 |
| Status | Active |
| Practice address |
10301 STELLA LINK RD STE C Houston, TX 77025 (832) 538-1600 Fax (832) 538-1601 |
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 | 8 | 0 | 0 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 8 | 0 | 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.