Cynthia Xenakis, MD
NPI 1134157738 · Anesthesiology Physician · Valhalla, NY
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cynthia Xenakis, MD is a Anesthesiology Physician provider in Valhalla, NY (NPI 1134157738).
Provider details
- NPI number
- 1134157738
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 2398161 (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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
61 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) |
|---|---|---|
| Anesthesia for Procedure on Anus and Rectum00902 | 13 | $169 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 13 | $301 |
| Anesthesia for X-Ray Or Radiation Therapy01922 | 13 | $210 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 11 | $154 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 11 | $52 |
Typical Medicare-allowed amounts for these services range $52–$301 (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
- 2006-06-30
- Last updated
- 2007-07-08
Frequently asked questions
- What is Cynthia Xenakis's NPI number?
- Cynthia Xenakis's National Provider Identifier (NPI) is 1134157738, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cynthia Xenakis's specialty?
- Cynthia Xenakis is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Cynthia Xenakis located?
- Cynthia Xenakis's practice location on file with NPPES is 2389 Macy Pavillion, Valhalla, NY 10595.
- What is Cynthia Xenakis's phone number?
- The practice phone number listed in the NPPES registry for Cynthia Xenakis is (914) 347-0380.
- Does Cynthia Xenakis accept Medicare?
- Cynthia Xenakis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cynthia Xenakis's NPI active?
- Yes — Cynthia Xenakis's NPI (1134157738) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.