Dr. Jon Gilchrist Walker, M.D.
Dr. Jon Gilchrist Walker is a Urology Physician provider (Urology) practicing in Lancaster, PA, registered in the NPPES registry with NPI 1356748099 since 2014. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1356748099 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Jon Gilchrist Walker |
| Credential | M.D. |
| Sex | Male |
| Practice address | Lancaster, PA, 17602 |
| Phone | 7173933555 |
| Enumeration date | 2014-11-24 |
| Last updated in NPPES | 2014-11-24 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208800000X | Urology Physician | Primary | MD017170E | PA |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Copy-ready billing details
Provider: Jon Walker, M.D. NPI: 1356748099 Taxonomy: 208800000X (Urology Physician) Address: Lancaster, PA, 17602
Verify this record
Cross-check NPI 1356748099 against the authoritative CMS record: view Dr. Jon Gilchrist Walker on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2014-11-24.