Marcus Carlsson, MD PHD ASSOC PROF
Marcus Carlsson, MD PHD ASSOC PROF is a Magnetic Resonance Imaging (MRI) Internal Medicine Physician in Bethesda, MD, registered under NPI 1457943607.
Getting there
The practice address on file is NATIONAL INSTITUTES OF HEALTH 10 CENTER DR RM 2C713, Bethesda, MD 20892. 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 |
|---|---|---|
| MD048555 | DC | Magnetic Resonance Imaging (MRI) Internal… primary |
This provider holds licence MD048555 issued in DC. 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 Magnetic Resonance Imaging (MRI) covers
The NUCC recommends this code not be used. Choose a more appropriate code.<br/> NUCC Health Care Provider Taxonomy, code 207RM1200X
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 | 1457943607 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 9, 2021 |
| Last updated | Feb 9, 2021 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD PHD ASSOC PROF |
| Practice address |
NATIONAL INSTITUTES OF HEALTH 10 CENTER DR RM 2C713 Bethesda, MD 20892 (240) 255-8613 |
| Mailing address |
6311 HERKOS CT Bethesda, MD 20817 |
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 | 9 | 4 | 3 | 6 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 1 | 7 | 9 | 4 | 6 | 6 | 0 |
Sum = 63 · next multiple of 10 = 70 · check digit = 7 · actual last digit = 7
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.