Jon Hernandez, M.D.
Jon Hernandez, M.D. is an Orthopaedic Hand Surgery Physician in Lancaster, PA, registered under NPI 1871591198. 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 35 ERICK RD, Lancaster, PA 17601. 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 |
|---|---|---|
| MD424128 | PA | Orthopaedic Hand Surgery Physician primary |
| MD424128 | PA | Orthopaedic Surgery Physician |
This provider holds licence MD424128 issued in PA. 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 - Orthopedic Surgery
- PAC ID
- 3678550639
Enrolled in Medicare 3 times, across 3 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Pennsylvania | I20040707000803 | Practitioner - Orthopedic Surgery |
| New Jersey | I20181024000877 | Practitioner - Orthopedic Surgery |
| Missouri | I20250110003089 | Practitioner - Orthopedic Surgery |
Medicare enrolment is recorded as approved under the provider type Practitioner - Orthopedic Surgery. There are 3 separate enrolment records across 3 states (PA, NJ, MO). 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 Hand Surgery covers
An orthopaedic surgeon trained in the investigation, preservation and restoration by medical, surgical and rehabilitative means of all structures of the upper extremity directly affecting the form and function of the hand and wrist. NUCC Health Care Provider Taxonomy, code 207XS0106X
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 | |
|---|---|---|---|---|
| 207XS0106X | Orthopaedic Hand Surgery Physician Hand Surgery | MD424128 | PA | primary |
| 207X00000X | Orthopaedic Surgery Physician | MD424128 | PA |
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 | 1871591198 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 11, 2005 |
| Last updated | Apr 6, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | M.D. |
| Practice address |
35 ERICK RD Lancaster, PA 17601 (717) 466-2451 Fax (717) 715-1295 |
| Mailing address |
2100 MACK BLVD FL 4 Allentown, PA 18103 |
| Other identifiers |
0651358
· Other 1010825780001 · Medicaid (PA) 1614028 · Other 2170525 · Other 2291153000 · Other 2291153000 · Other 2291153000 · Other 2454072 · Other 328962 · Other 50044348 · Other 50044348 · Other 556421 · Other 819317 · Other 90334 · Other 9336898 · Other P00144458 · Other P3253696 · Other |
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 | 8 | 7 | 1 | 5 | 9 | 1 | 1 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 5 | 1 | 1 | 9 | 2 | 1 | 9 |
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.