Ronald Sher, M.D.
Ronald Sher, M.D. is a Cardiovascular Disease Physician in Reisterstown, MD, registered under NPI 1447211586.
Getting there
The practice address on file is 750 MAIN ST STE 302, Reisterstown, MD 21136. 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 |
|---|---|---|
| D0015476 | MD | Cardiovascular Disease Physician primary |
This provider holds licence D0015476 issued in MD. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Cardiovascular Disease (cardiology)
- PAC ID
- 5991879413
Enrolled in Medicare 7 times, across 7 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Maryland | I20080801000149 | Practitioner - Cardiovascular Disease (cardiology) |
| Pennsylvania | I20230330002151 | Practitioner - Diagnostic Radiology |
| New Jersey | I20230511001562 | Practitioner - Cardiovascular Disease (cardiology) |
| Tennessee | I20230530001244 | Practitioner - Cardiovascular Disease (cardiology) |
| Hawaii | I20250212002053 | Practitioner - Diagnostic Radiology |
| Ohio | I20250609001906 | Practitioner - Diagnostic Radiology |
| Kansas | I20250714000485 | Practitioner - Diagnostic Radiology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Cardiovascular Disease (cardiology). There are 7 separate enrolment records across 7 states (MD, PA, NJ, TN, HI, OH, KS). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Cardiovascular Disease covers
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms. NUCC Health Care Provider Taxonomy, code 207RC0000X
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 | 1447211586 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 29, 2006 |
| Last updated | Dec 4, 2020 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
750 MAIN ST STE 302 Reisterstown, MD 21136 (410) 526-3071 |
| Mailing address |
750 MAIN ST STE 302 Reisterstown, MD 21136 |
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 | 4 | 7 | 2 | 1 | 1 | 5 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 8 | 7 | 4 | 1 | 2 | 5 | 7 |
Sum = 64 · next multiple of 10 = 70 · check digit = 6 · actual last digit = 6
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.