Mike Leonis, M.D., PH.D.
Mike Leonis, M.D., PH.D. is a Pediatric Transplant Hepatology Physician in Cleveland, OH, registered under NPI 1669402087. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 9500 EUCLID AVE # R3, Cleveland, OH 44195. 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 |
|---|---|---|
| 35.079553 | OH | Pediatric Transplant Hepatology Physician primary |
| 35.079553 | OH | Pediatric Gastroenterology Physician |
This provider holds licence 35.079553 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 - Gastroenterology
- PAC ID
- 6305998311
Medicare enrolment is recorded as approved under the provider type Practitioner - Gastroenterology. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Pediatric Transplant Hepatology covers
A pediatrician with expertise in transplant hepatology encompasses the special knowledge and skill required of pediatric gastroenterologists to care for patients prior to and following hepatic transplantation; it spans all phases of liver transplantation. NUCC Health Care Provider Taxonomy, code 2080T0004X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2080T0004X | Pediatric Transplant Hepatology Physician Pediatric Transplant Hepatology | 35.079553 | OH | primary |
| 2080P0206X | Pediatric Gastroenterology Physician Pediatric Gastroenterology | 35.079553 | OH |
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 | 1669402087 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 3, 2006 |
| Last updated | Oct 28, 2021 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D., PH.D. |
| Practice address |
9500 EUCLID AVE # R3 Cleveland, OH 44195 (216) 445-5893 Fax (216) 444-2974 |
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 | 6 | 6 | 9 | 4 | 0 | 2 | 0 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 3 | 9 | 8 | 0 | 4 | 0 | 7 |
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.