Mark Gyenes, HS(IDC/DMT)
Mark Gyenes, HS(IDC/DMT) is a provider specialising in Independent Duty Corpsman in Memphis, TN, registered under NPI 1104802875. This provider registers 6 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 2 AUCTION AVE, Memphis, TN 38105. 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 |
|---|---|---|
| B1583538 | TN | Basic Emergency Medical Technician |
| A00065327 | MD | Nurse's Aide |
| 3900062 | TN | Nurse's Aide |
Licences are recorded in 2 states: TN, MD. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
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.
Licensed in 2 states
This provider holds licences in 2 states: Maryland and Tennessee. The practice address on file is in Memphis, TN, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- B1583538
- Specialty
- Basic Emergency Medical Technician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Independent Duty Corpsman covers
A Navy Independent Duty Corpsman (IDC) is an active duty Sailor who has successfully completed one of the Navy's specific IDC training programs. IDCs are formally trained and educated to perform primary medical care and minor surgical services in a variety of health care and non-health care settings worldwide under indirect physician supervision. IDCs provide care to Department of Defense operational forces and other supporting forces such as contractors and foreign nationals. NUCC Health Care Provider Taxonomy, code 1710I1002X
All registered taxonomy codes
This provider registers 7 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 1710I1002X | Independent Duty Corpsman Independent Duty Corpsman | — | — | primary |
| 146N00000X | Basic Emergency Medical Technician | B1583538 | TN | |
| 1710I1003X | Independent Duty Medical Technicians Independent Duty Medical Technicians | — | — | |
| 247000000X | Health Information Technician | — | — | |
| 247200000X | Other Technician | — | — | |
| 376K00000X | Nurse's Aide | A00065327 | MD | |
| 376K00000X | Nurse's Aide | 3900062 | TN |
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 | 1104802875 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 15, 2005 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | HS(IDC/DMT) |
| Practice address |
2 AUCTION AVE Memphis, TN 38105 (901) 544-3912 Fax (901) 544-3915 |
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 | 1 | 0 | 4 | 8 | 0 | 2 | 8 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 0 | 4 | 7 | 0 | 4 | 8 | 5 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.