Christos Fountzilas, M.D.
NPI 1558672105 · Medical Oncology Physician · Buffalo, NY
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christos Fountzilas, M.D. is a Medical Oncology Physician provider in Buffalo, NY (NPI 1558672105).
Provider details
- NPI number
- 1558672105
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 287267 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
251 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 176 | $92 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 35 | $62 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 21 | $136 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 19 | $171 |
Typical Medicare-allowed amounts for these services range $62–$171 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prochlorperazine Maleate | 28 | 22 |
| Mirtazapine | 20 | 13 |
| Rivaroxabanbrand: Xarelto | 16 | — |
| Metoclopramide Hcl | 16 | 14 |
| Apixabanbrand: Eliquis | 15 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 50 E 76th StAppartment 4aNew York, NY 10021-2707Phone: (212) 434-2422
Registry dates
- Enumerated
- 2010-06-29
- Last updated
- 2019-07-15
Frequently asked questions
- What is Christos Fountzilas's NPI number?
- Christos Fountzilas's National Provider Identifier (NPI) is 1558672105, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christos Fountzilas's specialty?
- Christos Fountzilas is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Christos Fountzilas located?
- Christos Fountzilas's practice location on file with NPPES is Elm and Carlton Streets, Buffalo, NY 14263-0001.
- What is Christos Fountzilas's phone number?
- The practice phone number listed in the NPPES registry for Christos Fountzilas is (716) 845-2300.
- Does Christos Fountzilas accept Medicare?
- Christos Fountzilas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christos Fountzilas's NPI active?
- Yes — Christos Fountzilas's NPI (1558672105) is active in the NPPES registry as of the last update on 2019-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.