Cornerstone Diagnostics Inc
NPI 1023306347 · Clinical Medical Laboratory · Jamestown, KY
Enrolled with Medicare as Part B Supplier - Independent Clinical Laboratory · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cornerstone Diagnostics Inc is a Clinical Medical Laboratory organization in Jamestown, KY (NPI 1023306347).
Provider details
- NPI number
- 1023306347
- Entity type
- Organization
- Primary specialty
- Clinical Medical LaboratoryLaboratories
- Organization subpart
- No
- Authorized official
- William Bouchillon, Ceo(877) 412-8330
Specialties & taxonomies
Laboratories
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 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
1,602 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) |
|---|---|---|
| Drug Test(s), Definitive, Utilizing (1) Drug Identification Methods Able to Identify Individual Drugs and Distinguish Between Structural Isomers (but Not Necessarily Stereoisomers), Including, But Not Limited to Gc/Ms (any Type, Single Or Tandem) and Lc/MsG0480 | 997 | $112 |
| Testing for Presence of Drug, By Chemistry Analyzers80307 | 588 | $61 |
| Drug Test(s), Definitive, Utilizing (1) Drug Identification Methods Able to Identify Individual Drugs and Distinguish Between Structural Isomers (but Not Necessarily Stereoisomers), Including, But Not Limited to Gc/Ms (any Type, Single Or Tandem) and Lc/MsG0481 | 17 | $153 |
Typical Medicare-allowed amounts for these services range $61–$153 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Cornerstone Diagnostics Inc
- Doing business as
- Premier Tox 20 Inc
- Doing business as
- Premier Tox Laboratory
Registry dates
- Enumerated
- 2011-07-20
- Last updated
- 2025-12-30
- Certified
- 2025-12-30
Frequently asked questions
- What is Cornerstone Diagnostics Inc's NPI number?
- Cornerstone Diagnostics Inc's National Provider Identifier (NPI) is 1023306347, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Cornerstone Diagnostics Inc?
- Cornerstone Diagnostics Inc is classified in the NPPES registry as Clinical Medical Laboratory (Laboratories).
- Where is Cornerstone Diagnostics Inc located?
- Cornerstone Diagnostics Inc's practice location on file with NPPES is 812 N Main St, Jamestown, KY 42629-2404.
- What is Cornerstone Diagnostics Inc's phone number?
- The practice phone number listed in the NPPES registry for Cornerstone Diagnostics Inc is (877) 412-8330.
- Does Cornerstone Diagnostics Inc accept Medicare?
- Cornerstone Diagnostics Inc 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 Cornerstone Diagnostics Inc?
- The authorized official listed on Cornerstone Diagnostics Inc's NPPES record is William Bouchillon, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Cornerstone Diagnostics Inc's NPI active?
- Yes — Cornerstone Diagnostics Inc's NPI (1023306347) is active in the NPPES registry as of the last update on 2025-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.