Mark Billy, DDS
Mark Billy, DDS is a provider specialising in Oral & Maxillofacial Surgery (D.M.D.) in Youngstown, OH, registered under NPI 1538143508.
Getting there
The practice address on file is 1001 COVINGTON ST, Youngstown, OH 44510. 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 |
|---|---|---|
| 18346 | OH | Oral & Maxillofacial Surgery (D.M.D.) primary |
This provider holds licence 18346 issued in OH. 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 - Maxillofacial Surgery
- PAC ID
- 0941398804
- Enrollment ID
- I20071112000176
Medicare enrolment is recorded as approved under the provider type Practitioner - Maxillofacial Surgery. 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 Oral & Maxillofacial Surgery covers
Oral and maxillofacial surgeons are trained to recognize and treat a wide spectrum of diseases, injuries and defects in the head, neck, face, jaws and the hard and soft tissues of the oral and maxillofacial region. They are also trained to administer anesthesia, and provide care in an office setting. They are trained to treat problems such as the extraction of wisdom teeth, misaligned jaws, tumors and cysts of the jaw and mouth, and to perform dental implant surgery. NUCC Health Care Provider Taxonomy, code 204E00000X
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 | 1538143508 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 2, 2005 |
| Last updated | Apr 26, 2022 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | DDS |
| Practice address |
1001 COVINGTON ST Youngstown, OH 44510 (330) 480-3195 Fax (330) 480-1366 |
| Mailing address |
5437 MAHONING AVE SUITE 12 Austintown, OH 44515 |
| Other identifiers |
0242866
· Medicaid (OH) |
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 | 5 | 3 | 8 | 1 | 4 | 3 | 5 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 5 | 6 | 8 | 2 | 4 | 6 | 5 | 0 |
Sum = 62 · next multiple of 10 = 70 · check digit = 8 · actual last digit = 8
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.