Quick answers
- Does Jeff F. Chianfagna accept Medicare assignment?
- Yes. Medicare's clinician data says Jeff F. Chianfagna 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 Jeff F. Chianfagna see?
- In 2024, CMS data shows 155 Original Medicare patients and 215 services for Jeff F. Chianfagna. This counts Original Medicare only and measures volume, not quality.
- What is Jeff F. Chianfagna's NPI number?
- 1871671875. 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 Jeff F. Chianfagna, 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 | 155 |
|---|---|
| Services billed to Medicare | 215 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Critical care, first 30-74 minutes (99291)141 services
- Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)17 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)14 services
- Critical care, each additional 30 minutes (99292)13 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%
- Ischemic heart disease58%
- Atrial fibrillation50%
- Arthritis49%
- Diabetes46%
Hospitals where Jeff F. Chianfagna works
Medicare's Facility Affiliation Data lists Jeff F. Chianfagna 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.
- Northern Westchester HospitalMount Kisco, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330162
- Phelps HospitalSleepy Hollow, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330261
Practice locations
Addresses where Jeff F. Chianfagna is enrolled with Medicare (CMS data updated October 2, 2026).
- 300 Community DrManhasset, NY 11030
- 300 Community Dr LlManhasset, NY 11030 (516) 562‑2229
- 330 Community DrManhasset, NY 11030 (516) 708‑2550
- 350 Community DrManhasset, NY 11030 (516) 562‑3845
- 400 E Main StMount Kisco, NY 10549 (914) 666‑1371
Group practices
Medicare enrollment lists Jeff F. Chianfagna as a member of this group (CMS data updated October 2, 2026).
- North Shore-Lij Medical PC6,440 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Manhasset
Clinicians with the same Medicare primary specialty in Manhasset, NY — not a recommendation.
Other clinicians in North Shore-Lij Medical PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871671875 |
| 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