Quick answers
- Does Thomas Mastakouris accept Medicare assignment?
- Medicare's clinician data says Thomas Mastakouris may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Thomas Mastakouris see?
- In 2024, CMS data shows 414 Original Medicare patients and 2,773 services for Thomas Mastakouris. This counts Original Medicare only and measures volume, not quality.
- What is Thomas Mastakouris's NPI number?
- 1144277443. 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 Thomas Mastakouris, 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 | 414 |
|---|---|
| Services billed to Medicare | 2,773 |
| Different services or procedures | 32 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)1,492 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)257 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)184 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)97 services
- Annual depression screening, 5 to 15 minutes (G0444)94 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%
- Arthritis45%
- Diabetes39%
- Ischemic heart disease35%
- Osteoporosis26%
Practice locations
Addresses where Thomas Mastakouris is enrolled with Medicare (CMS data updated October 2, 2026).
- 3010 38th St, Fl 2Astoria, NY 11103 (718) 545‑2020
Group practices
Medicare enrollment lists Thomas Mastakouris as a member of this group (CMS data updated October 2, 2026).
- Astoria Healthcare Associates LLP2 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Astoria
Clinicians with the same Medicare primary specialty in Astoria, NY — not a recommendation.
Other clinicians in Astoria Healthcare Associates LLP
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1987 (39 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1144277443 |
| 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
- 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