JAMES MAGUIRE TONASCIA MD
NPI 1053874909
Radiology - Diagnostic Radiology in Baltimore, MD
About James Maguire Tonascia Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES MAGUIRE TONASCIA MD (NPI 1053874909) is an individual diagnostic radiology provider in Baltimore, Maryland, licensed in Maryland (D0092317) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with University Of Maryland Medical Center, and maintains a secondary practice location in Baltimore.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
James Maguire Tonascia 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
4Medicare enrollment records show James Tonascia reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21224
- Reassigned Medicare billing, Maryland enrollment
- 4,483 clinicians in this Medicare group
Baltimore, MD 21201
- Reassigned Medicare billing, Maryland and District of Columbia enrollments
- Also billed through NPI 1154335487 (District of Columbia)
- 130 clinicians in this Medicare group
Baltimore, MD 21201
- Reassigned Medicare billing, Maryland enrollment
- 122 clinicians in this Medicare group
Glen Burnie, MD 21061
- Reassigned Medicare billing, Maryland enrollment
- 123 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.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Maryland Medical Center
Acute Care Hospitals · Baltimore, MDUniversity Of MD Capital Region Medical Center
Acute Care Hospitals · Upper Marlboro, MDUniversity Of MD Shore Medical Ctr At Chestertown
Acute Care Hospitals · Chestertown, MDUniversity Of MD Shore Medical Center At Easton
Acute Care Hospitals · Easton, MDUniversity Of MD Medical Center Midtown Campus
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21264 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 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21264
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 James Tonascia's NPI number?
The NPI number for James Tonascia is 1053874909. It was assigned to this individual provider in the NPPES registry on April 8, 2019.
Where is James Tonascia located?
James Tonascia practices at 4940 Eastern Avenue, Baltimore, MD 21264. The listed phone number is (410) 550-5568.
What is James Tonascia's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is James Tonascia enrolled in Medicare?
Yes. James Tonascia 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 James Tonascia's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Tonascia reassigns Medicare benefits to 4 organizations: Johns Hopkins University (Baltimore, MD), University Of Maryland Diagnostic Imaging Specialists P A (Baltimore, MD), University Imaging Center, LLC (Baltimore, MD) and University Of Maryland Diagnostic Radiology, LLC (Glen Burnie, 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 James Tonascia's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is James Tonascia affiliated with any hospitals?
According to CMS data, James Tonascia is affiliated with University Of Maryland Medical Center, University Of MD Capital Region Medical Center, University Of MD Shore Medical Ctr At Chestertown, University Of MD Shore Medical Center At Easton and University Of MD Medical Center Midtown Campus.
When was this NPI record last updated?
The NPPES record for James Tonascia was last updated on July 19, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# James Maguire Tonascia, MD · NPI 1053874909
Diagnostic Radiology physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since April 8, 2019.
## Identity
- **NPI:** 1053874909 (Entity type: Individual)
- **Enumerated:** April 8, 2019
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** D0092317 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 4940 EASTERN AVENUE, Baltimore, MD 21264-5216
- **Phone:** (410) 550-5568 · **Fax:** (410) 550-0470
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Johns Hopkins University (NPI 1275515546, Baltimore, MD); University Of Maryland Diagnostic Imaging Specialists P A (NPI 1790591329, Baltimore, MD); University Imaging Center, LLC (NPI 1245245307, Baltimore, MD); University Of Maryland Diagnostic Radiology, LLC (NPI 1548803257, Glen Burnie, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Maryland School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** July 19, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1053874909) · Data from the CMS NPPES public registry.