JOHN K DERDERIAN DO
NPI 1477595445
Internal Medicine in Lancaster, PA
About John K Derderian Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN K DERDERIAN DO (NPI 1477595445) is an individual internal medicine provider in Lancaster, Pennsylvania, licensed in Pennsylvania (OS011857) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Lancaster General Hospital, and is a graduate of Philadelphia College Of Osteopathic Medicine (2000).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John K Derderian Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lancaster General Hospital
Acute Care Hospitals · Lancaster, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 17602 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LANCASTER, PA 17602
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Derderian's NPI number?
The NPI number for John Derderian is 1477595445. It was assigned to this individual provider in the NPPES registry on June 12, 2006.
Where is John Derderian located?
John Derderian practices at 555 N Duke St, Lancaster, PA 17602. The listed phone number is (717) 544-5511.
What is John Derderian's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is John Derderian enrolled in Medicare?
Yes. John Derderian is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Is John Derderian affiliated with any hospitals?
According to CMS data, John Derderian is affiliated with Lancaster General Hospital.
When was this NPI record last updated?
The NPPES record for John Derderian was last updated on November 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.