DR. JOHN F. MACIEJCZYK M.D.
NPI 1639260102
Emergency Medicine in Danville, PA
About Dr. John F. Maciejczyk M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN F. MACIEJCZYK M.D. (NPI 1639260102) is an individual emergency medicine provider in Danville, Pennsylvania, licensed in Pennsylvania (MD429837) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. John F. Maciejczyk M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Maciejczyk reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
State College, PA 16803
- Reassigned Medicare billing, Pennsylvania enrollment
- 27 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 17822 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.
DANVILLE, PA 17822
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 Maciejczyk's NPI number?
The NPI number for John Maciejczyk is 1639260102. It was assigned to this individual provider in the NPPES registry on September 27, 2006.
Where is John Maciejczyk located?
John Maciejczyk practices at 100 N Academy Ave, Danville, PA 17822. The listed phone number is (570) 271-6812.
What is John Maciejczyk's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is John Maciejczyk enrolled in Medicare?
Yes. John Maciejczyk is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Maciejczyk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Maciejczyk reassigns Medicare benefits to Centre Emergency Medical Associates, PC. (State College, PA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Maciejczyk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Maciejczyk was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.