Quick answers
- Does Chelsea M. Sayles accept Medicare assignment?
- Yes. Medicare's clinician data says Chelsea M. Sayles accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Chelsea M. Sayles see?
- In 2024, CMS data shows 104 Original Medicare patients and 162 services for Chelsea M. Sayles. This counts Original Medicare only and measures volume, not quality.
- What is Chelsea M. Sayles's NPI number?
- 1538600655. 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 Chelsea M. Sayles, 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 | 104 |
|---|---|
| Services billed to Medicare | 162 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)87 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)13 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)11 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 cholesterol75%
- High blood pressure74%
- Arthritis33%
- Anxiety29%
- Diabetes28%
- Depression18%
Hospitals where Chelsea M. Sayles works
Medicare's Facility Affiliation Data lists Chelsea M. Sayles at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Oneida Health HospitalOneida, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330115
Practice locations
Addresses where Chelsea M. Sayles is enrolled with Medicare (CMS data updated October 2, 2026).
- 131 Oriskany Blvd, Suite 6Whitesboro, NY 13492 (315) 507‑3332
- 221 Broad St-Attn Ent Specialists of, Suite 201Oneida, NY 13421 (315) 363‑5421
- 301 Genesee StOneida, NY 13421
- 301 Genesee St-Attn Neurology, Suite COneida, NY 13421 (315) 361‑2377
- 321 Genesee StOneida, NY 13421 (315) 363‑6000
Group practices
Medicare enrollment lists Chelsea M. Sayles as a member of these groups (CMS data updated October 2, 2026).
- Oneida Medical Practice PC50 clinicians in the group
- Emergency Care Services of New York PC43 clinicians in the group
- Matthew Sanchez Family Health NP Walk-In Services, PLLC4 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Whitesboro
Clinicians with the same Medicare primary specialty in Whitesboro, NY — not a recommendation.
Other clinicians in Oneida Medical Practice PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2023 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538600655 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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