Ethan Leonard, MD
Ethan Leonard, MD is a Pediatric Infectious Diseases Physician in Cleveland, OH, registered under NPI 1992725097.
Getting there
The practice address on file is 11100 EUCLID AVE, Cleveland, OH 44106. 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 |
|---|---|---|
| MD600004232 | DC | Pediatric Infectious Diseases Physician primary |
| 35-073411 | OH | Pediatric Infectious Diseases Physician |
| 0101286480 | VA | Pediatric Infectious Diseases Physician |
| D0104390 | MD | Pediatric Infectious Diseases Physician |
Licences are recorded in 4 states: DC, OH, VA, MD. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Infectious Disease
- PAC ID
- 6002709367
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Ohio | I20040203000064 | Practitioner - Infectious Disease |
| District of Columbia | I20251014000009 | Practitioner - Pediatric Medicine |
Medicare enrolment is recorded as approved under the provider type Practitioner - Infectious Disease. There are 2 separate enrolment records across 2 states (OH, DC). 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.
Licensed in 4 states
This provider holds licences in 4 states: District of Columbia, Maryland, Ohio and Virginia. The practice address on file is in Cleveland, OH, 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
- MD600004232
- Specialty
- Pediatric Infectious Diseases Physician
- Licence
- D0104390
- Specialty
- Pediatric Infectious Diseases Physician
- Licence
- 35-073411
- Specialty
- Pediatric Infectious Diseases Physician
- Licence
- 0101286480
- Specialty
- Pediatric Infectious Diseases Physician
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 Pediatric Infectious Diseases covers
A pediatrician trained to care for children in the diagnosis, treatment and prevention of infectious diseases. This specialist can apply specific knowledge to affect a better outcome for pediatric infections with complicated courses, underlying diseases that predispose to unusual or severe infections, unclear diagnoses, uncommon diseases and complex or investigational treatments. NUCC Health Care Provider Taxonomy, code 2080P0208X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2080P0208X | Pediatric Infectious Diseases Physician Pediatric Infectious Diseases | MD600004232 | DC | primary |
| 2080P0208X | Pediatric Infectious Diseases Physician Pediatric Infectious Diseases | 35-073411 | OH | |
| 2080P0208X | Pediatric Infectious Diseases Physician Pediatric Infectious Diseases | 0101286480 | VA | |
| 2080P0208X | Pediatric Infectious Diseases Physician Pediatric Infectious Diseases | D0104390 | MD |
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 | 1992725097 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 20, 2006 |
| Last updated | Aug 6, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
11100 EUCLID AVE Cleveland, OH 44106 (216) 844-7700 Fax (216) 286-6341 |
| Mailing address |
24701 EUCLID AVE Euclid, OH 44117 |
| Other identifiers |
2130965
· Other (OH) P00122025 · Other (OH) 000000201121 · Other (OH) 000000526042 · Other (OH) 363758 · Other (OH) 2130965 · Medicaid (OH) 1018230890001 · Other (PA) 5629713 · Other (OH) 745934 · Other (OH) 000000221158 · Other (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 | 9 | 9 | 2 | 7 | 2 | 5 | 0 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 9 | 2 | 5 | 2 | 1 | 0 | 9 |
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.