Demetrius Mazidis, DO
NPI 1952979387 · Student in an Organized Health Care Education/Training Program · Brooklyn, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Demetrius Mazidis, DO is a Student in an Organized Health Care Education/Training Program provider in Brooklyn, NY (NPI 1952979387).
Provider details
- NPI number
- 1952979387
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
481 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 317 | $88 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 80 | $128 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 70 | $121 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 14 | $146 |
Typical Medicare-allowed amounts for these services range $88–$146 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-06-13
- Last updated
- 2021-06-13
- Certified
- 2021-06-13
Frequently asked questions
- What is Demetrius Mazidis's NPI number?
- Demetrius Mazidis's National Provider Identifier (NPI) is 1952979387, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Demetrius Mazidis's specialty?
- Demetrius Mazidis is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Demetrius Mazidis located?
- Demetrius Mazidis's practice location on file with NPPES is 450 Clarkson Ave, Brooklyn, NY 11203-2012.
- What is Demetrius Mazidis's phone number?
- The practice phone number listed in the NPPES registry for Demetrius Mazidis is (718) 270-1000.
- Does Demetrius Mazidis accept Medicare?
- Demetrius Mazidis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Demetrius Mazidis's NPI active?
- Yes — Demetrius Mazidis's NPI (1952979387) is active in the NPPES registry as of the last update on 2021-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.