Quick answers
- Does James M. Tonascia accept Medicare assignment?
- Yes. Medicare's clinician data says James M. Tonascia accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does James M. Tonascia see?
- In 2024, CMS data shows 205 Original Medicare patients and 268 services for James M. Tonascia. This counts Original Medicare only and measures volume, not quality.
- What is James M. Tonascia's NPI number?
- 1053874909. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for James M. Tonascia, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 205 |
|---|---|
| Services billed to Medicare | 268 |
| Different services or procedures | 39 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- X-ray of chest, 1 view (71045)81 services
- X-ray of chest, 2 views (71046)77 services
- X-ray of abdomen, 1 view (74018)15 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Diabetes50%
- Ischemic heart disease49%
- Chronic kidney disease46%
Hospitals where James M. Tonascia works
Medicare's Facility Affiliation Data lists James M. Tonascia at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- University of Maryland Medical CenterBaltimore, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210002
- University of MD Capital Region Medical CenterUpper Marlboro, MD · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 210003
- University of MD Medical Center Midtown CampusBaltimore, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210038
- University of MD Shore Medical Center at ChestertownChestertown, MD · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 210030
- University of MD Shore Medical Center at EastonEaston, MD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 210037
Practice locations
Addresses where James M. Tonascia is enrolled with Medicare (CMS data updated October 2, 2026).
- 22 S Green StBaltimore, MD 21201 (410) 328‑5700
- 419 W Redwood StBaltimore, MD 21201 (410) 328‑3225
- 5 N La Plata Ct, Suite 104La Plata, MD 20646 (301) 539‑0345
- 901 Harry S Truman Dr NLargo, MD 20774 (240) 677‑0500
Group practices
Medicare enrollment lists James M. Tonascia as a member of these groups (CMS data updated October 2, 2026).
- University of Maryland Diagnostic Imaging Specialists P A85 clinicians in the group
- University Imaging Center, LLC57 clinicians in the group
- University of Maryland Diagnostic Radiology, LLC48 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Baltimore
Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.
Other clinicians in University of Maryland Diagnostic Imaging Specialists P A
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Maryland School Of Medicine |
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053874909 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians