H & H TESTING, LLC
H & H TESTING, LLC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003156688, based in Los Angeles, CA. The organization lists 2 taxonomy classifications, with Clinical Medical Laboratory recorded as primary.
Getting there
Here is what surrounds this office in Los Angeles, based on OpenStreetMap data collected Sep 8, 2026. Parking is available about 770 ft away. The nearest transit stop is 837 ft away, served by National & Kelton. A pharmacy sits 0.48 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription.
Getting here and what is nearby
Convenience ExtraMile 149 ft ~1 min
Gas station Chevron 181 ft ~1 min
Transit Westwood & National 234 ft ~1 min
Transit Westwood & National 304 ft ~2 min
Restaurant Winchell's Donut House 337 ft ~2 min
Parking 371 ft ~2 min
Parking 447 ft ~2 min
Restaurant Niko Niko Sushi 400 ft ~2 min
Pharmacy VFP Pharmacy 521 ft ~2 min
Grocery Trader Joe's 575 ft ~3 min
10850 National Boulevard, Los Angeles 90064
Mo-Su 08:00-21:00
Parking 770 ft ~3 min
Transit National & Kelton 837 ft ~4 min
Convenience 7-Eleven 0.24 mi ~5 min
Convenience Mobil Mart 0.26 mi ~6 min
Gas station Mobil 0.26 mi ~6 min
Pharmacy CVS Pharmacy 0.48 mi ~10 min
Mo-Fr 08:00-12:30,13:00-23:00; Sa 08:00-12:30,13:00-20:00; Su 10:00-12:30,13:00-20:00
Restaurant Phorage 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 |
|---|---|---|
| CLF00343433 | CA | Clinical Medical Laboratory primary |
This provider holds licence CLF00343433 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 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
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 291U00000X | Clinical Medical Laboratory | CLF00343433 | CA | primary |
| 261QR0405X | Substance Use Disorder Rehabilitation Clinic/Center Rehabilitation, Substance Use Disorder | — | CA |
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 | 1003156688 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Feb 19, 2013 |
| Last updated | Oct 3, 2016 |
| Status | Active |
| Practice address |
10801 NATIONAL BLVD SUITE 579 Los Angeles, CA 90064 (954) 678-0078 |
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 | 5 | 6 | 6 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 5 | 3 | 6 | 7 |
Sum = 52 · next multiple of 10 = 60 · check digit = 8 · actual last digit = 8
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.