WILLIAM GRIECO MD
NPI 1548357403
Anesthesiology in Philadelphia, PA
About William Grieco Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM GRIECO MD (NPI 1548357403) is an individual anesthesiology provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD042085L) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Nazareth Hospital, and is a graduate of Jefferson Medical College Of Thomas Jefferson University (1988).
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 and accepts Medicare assignment
William Grieco 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 Reassignments
2Medicare enrollment records show William Grieco reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Philadelphia, PA 19152
- Reassigned Medicare billing, Pennsylvania enrollment
- 140 clinicians in this Medicare group
Darby, PA 19023
- Reassigned Medicare billing, Pennsylvania enrollment
- 400 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 6
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Nazareth Hospital
Acute Care Hospitals · Philadelphia, PAMedicare 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.
PHILADELPHIA, PA 19152
PHILADELPHIA, PA 19152
PHILADELPHIA, PA 19152
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 William Grieco's NPI number?
The NPI number for William Grieco is 1548357403. It was assigned to this individual provider in the NPPES registry on October 10, 2006.
Where is William Grieco located?
William Grieco practices at 2601 Holme Ave, Philadelphia, PA 19152. The listed phone number is (215) 335-6000.
What is William Grieco's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is William Grieco enrolled in Medicare?
Yes. William Grieco 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 organizations bill Medicare for William Grieco's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Grieco reassigns Medicare benefits to 2 organizations: Cep America - Anesthesia PC (Philadelphia, PA) and Northstar Anesthesia Of Pennsylvania, LLC (Darby, 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 William Grieco's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is William Grieco affiliated with any hospitals?
According to CMS data, William Grieco is affiliated with Nazareth Hospital.
When was this NPI record last updated?
The NPPES record for William Grieco was last updated on October 14, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# William Grieco, MD · NPI 1548357403
Anesthesiology physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since October 10, 2006.
## Identity
- **NPI:** 1548357403 (Entity type: Individual)
- **Enumerated:** October 10, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** MD042085L (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 2601 HOLME AVE, Philadelphia, PA 19152-2007
- **Phone:** (215) 335-6000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Cep America - Anesthesia PC (NPI 1508756735, Philadelphia, PA); Northstar Anesthesia Of Pennsylvania, LLC (NPI 1700218989, Darby, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Jefferson Medical College Of Thomas Jefferson University, class of 1988
## Record status
- **NPPES last updated:** October 14, 2019
---
Source: [NPI Profile](https://npiprofile.com/npi/1548357403) · Data from the CMS NPPES public registry.