NICHOLAS COLAZZO MD
NPI 1649774308
Emergency Medicine in Newark, DE
About Nicholas Colazzo Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NICHOLAS COLAZZO MD (NPI 1649774308) is an individual emergency medicine provider in Newark, Delaware, licensed in Delaware (C1-0024255) and active in the NPI registry since March 2018. 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)
Nicholas Colazzo Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Nicholas Colazzo reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Newark, DE 19718
- Reassigned Medicare billing, Delaware enrollment
- 167 clinicians in this Medicare group
Newark, DE 19718
- Reassigned Medicare billing, Delaware enrollment
- 1,531 clinicians in this Medicare group
Salisbury, MD 21801
- Reassigned Medicare billing, Delaware and Maryland enrollments
- 39 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 7
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 19718 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.
NEWARK, DE 19718
NEWARK, DE 19718
NEWARK, DE 19718
NEWARK, DE 19718
NEWARK, DE 19718
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 Nicholas Colazzo's NPI number?
The NPI number for Nicholas Colazzo is 1649774308. It was assigned to this individual provider in the NPPES registry on March 19, 2018.
Where is Nicholas Colazzo located?
Nicholas Colazzo practices at 4755 Ogletown Stanton Rd, Newark, DE 19718. The listed phone number is (302) 733-1000.
What is Nicholas Colazzo's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Nicholas Colazzo enrolled in Medicare?
Yes. Nicholas Colazzo is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Nicholas Colazzo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Colazzo reassigns Medicare benefits to 3 organizations: Christiana Care Emergency Physicians LLC (Newark, DE), Christiana Care Health Services, Inc (Newark, DE) and Emergency Service Associates PA (Salisbury, MD). 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 Nicholas Colazzo'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 Nicholas Colazzo was last updated on July 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Nicholas Colazzo, MD · NPI 1649774308
Emergency Medicine physician in Newark, Delaware. Individual provider, active in the CMS NPPES registry since March 19, 2018.
## Identity
- **NPI:** 1649774308 (Entity type: Individual)
- **Enumerated:** March 19, 2018
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** C1-0024255 (Delaware)
- **Sole proprietor:** No
## Practice location
- **Address:** 4755 OGLETOWN STANTON RD, Newark, DE 19718-2200
- **Phone:** (302) 733-1000
## 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): Christiana Care Emergency Physicians LLC (NPI 1639956451, Newark, DE); Christiana Care Health Services, Inc (NPI 1104896596, Newark, DE); Emergency Service Associates PA (NPI 1558340562, Salisbury, MD) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 7, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1649774308) · Data from the CMS NPPES public registry.