Medical Diagnostic Laboratory LLC
NPI 1023253556 · Clinical Medical Laboratory · La Verne, CA
Enrolled with Medicare as Part B Supplier - Independent Clinical Laboratory · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Medical Diagnostic Laboratory LLC is a Clinical Medical Laboratory organization in La Verne, CA (NPI 1023253556).
Provider details
- NPI number
- 1023253556
- Entity type
- Organization
- Primary specialty
- Clinical Medical LaboratoryLaboratories
- Organization subpart
- No
- Authorized official
- Fausto Mendez, Managing Member(626) 303-8674
- License
- 05D0642547 (CA)
Specialties & taxonomies
Laboratories
Laboratories
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
26,201 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Travel Allowance One Way in Connection With Medically Necessary Laboratory Specimen Collection Drawn From Home Bound Or Nursing Home Bound Patient; Prorated Miles Actually TravelledP9603 | 5,950 | $1 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,912 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 1,879 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 1,721 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 1,302 | $13 |
| Hemoglobin A1c Level83036 | 1,222 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-12-12
- Last updated
- 2013-10-08
Frequently asked questions
- What is Medical Diagnostic Laboratory LLC's NPI number?
- Medical Diagnostic Laboratory LLC's National Provider Identifier (NPI) is 1023253556, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Medical Diagnostic Laboratory LLC?
- Medical Diagnostic Laboratory LLC is classified in the NPPES registry as Clinical Medical Laboratory (Laboratories).
- Where is Medical Diagnostic Laboratory LLC located?
- Medical Diagnostic Laboratory LLC's practice location on file with NPPES is 1330 Arrow Hwy, La Verne, CA 91750-5218.
- What is Medical Diagnostic Laboratory LLC's phone number?
- The practice phone number listed in the NPPES registry for Medical Diagnostic Laboratory LLC is (626) 303-8674.
- Does Medical Diagnostic Laboratory LLC accept Medicare?
- Medical Diagnostic Laboratory LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Medical Diagnostic Laboratory LLC?
- The authorized official listed on Medical Diagnostic Laboratory LLC's NPPES record is Fausto Mendez, Managing Member. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Medical Diagnostic Laboratory LLC's NPI active?
- Yes — Medical Diagnostic Laboratory LLC's NPI (1023253556) is active in the NPPES registry as of the last update on 2013-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.