JOHN MAKOPOULOS MD
NPI 1972539476
Emergency Medicine in Philadelphia, PA
About John Makopoulos Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN MAKOPOULOS MD (NPI 1972539476) is an individual emergency medicine provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD428747) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John Makopoulos Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show John Makopoulos reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Darby, PA 19023
- Reassigned Medicare billing, Pennsylvania enrollment
- 646 clinicians in this Medicare group
Darby, PA 19023
- Reassigned Medicare billing, Pennsylvania enrollment
- 107 clinicians in this Medicare group
Christiana, PA 17509
- Reassigned Medicare billing, Pennsylvania enrollment
- 3,080 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 4
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 19143 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.
PHILADELPHIA, PA 19143
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 Makopoulos's NPI number?
The NPI number for John Makopoulos is 1972539476. It was assigned to this individual provider in the NPPES registry on June 25, 2006.
Where is John Makopoulos located?
John Makopoulos practices at 501 S 54th St Academic ER Svcs - ER Dept, Philadelphia, PA 19143. The listed phone number is (215) 748-9435.
What is John Makopoulos's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is John Makopoulos enrolled in Medicare?
Yes. John Makopoulos is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Makopoulos's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Makopoulos reassigns Medicare benefits to 3 organizations: Trinity Health Mid-Atlantic Medical Group (Darby, PA), Cep America LLC (Darby, PA) and Wellspan Medical Group (Christiana, PA). Each 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 Makopoulos'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 Makopoulos was last updated on January 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# John Makopoulos, MD · NPI 1972539476
Emergency Medicine physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since June 25, 2006.
## Identity
- **NPI:** 1972539476 (Entity type: Individual)
- **Enumerated:** June 25, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** MD428747 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 501 S 54TH ST, ACADEMIC ER SVCS - ER DEPT, Philadelphia, PA 19143-1900
- **Phone:** (215) 748-9435
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Trinity Health Mid-Atlantic Medical Group (NPI 1083138770, Darby, PA); Cep America LLC (NPI 1891672150, Darby, PA); Wellspan Medical Group (NPI 1427509942, Christiana, PA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 28, 2026
- **Other identifiers:** Other 1868289 (PA); Medicaid 1016393820 (PA)
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Source: [NPI Profile](https://npiprofile.com/npi/1972539476) · Data from the CMS NPPES public registry.