Dr. Mark R. Abbruzzese
Infectious Disease (Infectious Disease Physician)
- Medicare participating
At a glance
- Years since graduation
- 45
- In the NPI registry since
- 2005
- Medicare patients seen, 2024
- 237
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2005Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Infectious Disease Physician primary
DC license MD15748 · MD license D0048226
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Medstar Washington Hospital Center Washington, DC
- Medstar Georgetown University Hospital Washington, DC
Medical groups
- Medstar Medical Group II LLC (3,767 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 237
- Services billed
- 1,660
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 1,244 | 192 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 172 | 162 |
| Critical care, first 30-74 minutes | 62 | 19 |
| Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th | 55 | 27 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Ceftriaxone (ceftriaxone sodium) Other prescribers in Bethesda, MD | 29 |
| Atorvastatin Calcium Other prescribers in Bethesda, MD | 18 |
| Lorazepam Other prescribers in Bethesda, MD | 17 |
| Cefadroxil Other prescribers in Bethesda, MD | 13 |
| Doxycycline Hyclate Other prescribers in Bethesda, MD | 13 |
| Biktarvy (bictegrav/emtricit/tenofov ala) | 11 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $29.50 in total to this clinician.
| Merck Sharp & Dohme LLC | $29.50 |
|---|
| Food and Beverage | $29.50 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.