MARK MICHAEL CARUSO MD
NPI 1639466642
Anesthesiology in New Castle, DE
About Mark Michael Caruso Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK MICHAEL CARUSO MD (NPI 1639466642) is an individual anesthesiology provider in New Castle, Delaware, licensed in Pennsylvania (MT200596) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS and is a graduate of Rutgers R W Johnson Medical School (cam/new Bruns/pisc) (2011).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mark Michael Caruso Md 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.
Medicare Billing Reassignment
Medicare enrollment records show Mark Caruso reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New Castle, DE 19720
- Reassigned Medicare billing, Delaware enrollment
- 348 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 3
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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
NEW CASTLE, DE 19720
NEW CASTLE, DE 19720
NEW CASTLE, DE 19720
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 Mark Caruso's NPI number?
The NPI number for Mark Caruso is 1639466642. It was assigned to this individual provider in the NPPES registry on June 29, 2011.
Where is Mark Caruso located?
Mark Caruso practices at 2 Reads Way Ste 201, New Castle, DE 19720. The listed phone number is (302) 709-4709.
What is Mark Caruso's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Mark Caruso enrolled in Medicare?
Yes. Mark Caruso 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.
Which organization bills Medicare for Mark Caruso's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Caruso reassigns Medicare benefits to Anesthesia Services PA (New Castle, DE). 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 Mark Caruso'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 Mark Caruso was last updated on August 13, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Mark Michael Caruso, MD · NPI 1639466642
Anesthesiology physician in New Castle, Delaware. Individual provider, active in the CMS NPPES registry since June 29, 2011.
## Identity
- **NPI:** 1639466642 (Entity type: Individual)
- **Enumerated:** June 29, 2011
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** MT200596 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 2 READS WAY, STE 201, New Castle, DE 19720-1607
- **Phone:** (302) 709-4709 · **Fax:** (302) 709-4551
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Anesthesia Services PA (NPI 1053366377, New Castle, DE), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Rutgers R W Johnson Medical School, class of 2011
## Record status
- **NPPES last updated:** August 13, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1639466642) · Data from the CMS NPPES public registry.