Caleb Layton, MD
Caleb Layton, MD is a Pulmonary Disease Physician in Salisbury, MD, registered under NPI 1083604482.
Getting there
The practice address on file is 100 E CARROLL ST PRMC STATION #379, Salisbury, MD 21801. 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 |
|---|---|---|
| D0013222 | MD | Pulmonary Disease Physician primary |
This provider holds licence D0013222 issued in MD. 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 Pulmonary Disease covers
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs. NUCC Health Care Provider Taxonomy, code 207RP1001X
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 | 1083604482 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 26, 2005 |
| Last updated | Apr 24, 2014 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
100 E CARROLL ST PRMC STATION #379 Salisbury, MD 21801 (410) 543-7722 Fax (910) 543-7725 |
| Other identifiers |
0000018301
· MEDICAL ASSISTANCE 0003 · BS NATIONAL CAPITAL AREA 1503877 · UNITED MINE WORKERS 36909 · MAMSI 290007326 · RAILROAD MEDICARE 41668302 · BLUE CROSS/SHIELD (MD) 440832 · AETNA 509300604 · PHCS 040401200 (MD) 6063888 · MEDICAL ASSISTANCE (VA) 32051 · PRIORITY PARTNERS |
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 | 8 | 3 | 6 | 0 | 4 | 4 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 7 | 3 | 3 | 0 | 8 | 4 | 7 |
Sum = 58 · next multiple of 10 = 60 · 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.