Omar Hamdallah, M.D.
Omar Hamdallah, M.D. is a Vascular Surgery Physician in Baltimore, MD, registered under NPI 1831359090.
Getting there
The practice address on file is 5233 KING AVE SUITE 208, Baltimore, MD 21237. 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 |
|---|---|---|
| D0077967 | MD | Vascular Surgery Physician primary |
This provider holds licence D0077967 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 Vascular Surgery covers
A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart. NUCC Health Care Provider Taxonomy, code 2086S0129X
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 | 1831359090 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 11, 2008 |
| Last updated | May 30, 2015 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
5233 KING AVE SUITE 208 Baltimore, MD 21237 (410) 918-1525 Fax (410) 918-1526 |
| Mailing address |
10845 PHILADELPHIA RD White Marsh, MD 21162 |
| Other identifiers |
297413
· Other (MD) 4490 0002 · Other (MD) 380791ZK7S · Other (MD) N/A · Other (MD) 297413 · Other (MD) 740002100 · Other (MD) 297413 · Other (MD) 4490 0002 · Other (DC) |
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 | 8 | 3 | 1 | 3 | 5 | 9 | 0 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 6 | 1 | 6 | 5 | 9 | 0 | 9 |
Sum = 70 · next multiple of 10 = 70 · check digit = 0 · actual last digit = 0
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.