MARSHALL S. LEWIS, MD A PROFESSIONAL CORPORATION
MARSHALL S. LEWIS, MD A PROFESSIONAL CORPORATION is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1609200203, based in Visalia, CA. The organization lists 5 taxonomy classifications, with Specialist recorded as primary.
Getting there
The practice address on file is 1031 N DEMAREE ST, Visalia, CA 93291. 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 |
|---|---|---|
| G282420 | CA | Specialist primary |
| DC18251 | CA | Chiropractor |
| AC9103 | CA | Acupuncturist |
| PA15629 | CA | Physician Assistant |
| 786817 | CA | Nurse Practitioner |
This provider holds licence G282420 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 Specialist covers
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree. NUCC Health Care Provider Taxonomy, code 174400000X
All registered taxonomy codes
This provider registers 5 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 174400000X | Specialist | G282420 | CA | primary |
| 111N00000X | Chiropractor | DC18251 | CA | |
| 171100000X | Acupuncturist | AC9103 | CA | |
| 363A00000X | Physician Assistant | PA15629 | CA | |
| 363L00000X | Nurse Practitioner | 786817 | 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 | 1609200203 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Aug 30, 2013 |
| Last updated | Aug 30, 2013 |
| Status | Active |
| Practice address |
1031 N DEMAREE ST Visalia, CA 93291 (559) 635-7400 Fax (559) 635-7403 |
| Mailing address |
2619 F ST Bakersfield, CA 93301 |
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 | 6 | 0 | 9 | 2 | 0 | 0 | 2 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 0 | 9 | 4 | 0 | 0 | 2 | 0 |
Sum = 47 · next multiple of 10 = 50 · check digit = 3 · actual last digit = 3
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.