CONSTANTINE ZACHARY ZAHARIS MD
NPI 1255594115
Emergency Medicine in Tampa, FL
About Constantine Zachary Zaharis Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CONSTANTINE ZACHARY ZAHARIS MD (NPI 1255594115) is an individual emergency medicine provider in Tampa, Florida, licensed in Florida (ME112437) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Constantine Zachary Zaharis Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Constantine Zaharis reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Dade City, FL 33525
- Reassigned Medicare billing, Florida enrollment
- 107 clinicians in this Medicare group
Delray Beach, FL 33484
- Reassigned Medicare billing, Florida enrollment
- 527 clinicians in this Medicare group
Atlanta, GA 30303
- Reassigned Medicare billing, Georgia enrollment
- 2,681 clinicians in this Medicare group
Atlanta, GA 30322
- Reassigned Medicare billing, Georgia enrollment
- 4,840 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 33613 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.
TAMPA, FL 33613
TAMPA, FL 33613
TAMPA, FL 33613
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 Constantine Zaharis's NPI number?
The NPI number for Constantine Zaharis is 1255594115. It was assigned to this individual provider in the NPPES registry on July 9, 2008.
Where is Constantine Zaharis located?
Constantine Zaharis practices at 3100 E Fletcher Ave, Tampa, FL 33613. The listed phone number is (813) 971-6000.
What is Constantine Zaharis's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Constantine Zaharis enrolled in Medicare?
Yes. Constantine Zaharis is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Constantine Zaharis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Constantine Zaharis reassigns Medicare benefits to 4 organizations: Emergency Services Of Zephyrhills PA (Dade City, FL), Inphynet Contracting Services LLC (Delray Beach, FL), Emory Medical Care Foundation Inc (Atlanta, GA) and The Emory Clinic Inc (Atlanta, GA). 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 Constantine Zaharis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Constantine Zaharis accept?
Health plans from Oscar Health Maintenance Organization of Florida list Constantine Zaharis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Constantine Zaharis was last updated on September 12, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.