Joan Crisp
Joan Crisp is a Chemistry Pathology Specialist/Technologist in Limestone, TN, registered under NPI 1457808792. This provider registers 7 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 2160 MARTIN RD, Limestone, TN 37681. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 196154 | IL | Chemistry Pathology… primary |
| 196154 | Blood Banking Specialist/Technologist | |
| 196154 | IL | Hematology Specialist/Technologist |
| 196154 | IL | Immunology Pathology… |
| 196154 | IL | Microbiology Specialist/Technologist |
| 196154 | Medical Laboratory Technician | |
| 196154 | Phlebotomy Technician |
This provider holds licence 196154 issued in IL. 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 Chemistry covers
Definition to come... NUCC Health Care Provider Taxonomy, code 246QC1000X
All registered taxonomy codes
This provider registers 7 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 246QC1000X | Chemistry Pathology Specialist/Technologist Chemistry | 196154 | IL | primary |
| 246QB0000X | Blood Banking Specialist/Technologist Blood Banking | 196154 | — | |
| 246QH0000X | Hematology Specialist/Technologist Hematology | 196154 | IL | |
| 246QI0000X | Immunology Pathology Specialist/Technologist Immunology | 196154 | IL | |
| 246QM0900X | Microbiology Specialist/Technologist Microbiology | 196154 | IL | |
| 246RM2200X | Medical Laboratory Technician Medical Laboratory | 196154 | — | |
| 246RP1900X | Phlebotomy Technician Phlebotomy | 196154 | — |
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 | 1457808792 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 3, 2016 |
| Last updated | Sep 3, 2016 |
| Status | Active |
| Sole proprietor | Yes |
| Practice address |
2160 MARTIN RD Limestone, TN 37681 (828) 775-1475 |
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 | 4 | 5 | 7 | 8 | 0 | 8 | 7 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 1 | 7 | 7 | 0 | 7 | 7 | 9 |
Sum = 68 · next multiple of 10 = 70 · check digit = 2 · actual last digit = 2
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.