Quick answers
- Does Breehan K. Chancellor accept Medicare assignment?
- Yes. Medicare's clinician data says Breehan K. Chancellor 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 Breehan K. Chancellor see?
- In 2024, CMS data shows 105 Original Medicare patients and 389 services for Breehan K. Chancellor. This counts Original Medicare only and measures volume, not quality.
- What is Breehan K. Chancellor's NPI number?
- 1649513474. 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 Breehan K. Chancellor, 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 | 105 |
|---|---|
| Services billed to Medicare | 389 |
| Different services or procedures | 30 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)54 services
- Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist (36224)35 services
- Imaging of blood vessel (75898)33 services
- Insertion of tube into external neck artery for diagnosis or treatment with review by radiologist (36227)30 services
- Treatment of broken spine bone with stabilizing device, each additional segment (22515)28 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%
- Arthritis70%
- Stroke or mini-stroke51%
- Osteoporosis49%
- Ischemic heart disease46%
Hospitals where Breehan K. Chancellor works
Medicare's Facility Affiliation Data lists Breehan K. Chancellor 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.
- Cooperman Barnabas Medical CenterLivingston, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 310076
- St Joseph's University Medical Center IncPaterson, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 310019
- Valley HospitalParamus, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310012
Practice locations
Addresses where Breehan K. Chancellor is enrolled with Medicare (CMS data updated October 2, 2026).
- 1200 E Ridgewood AveRidgewood, NJ 07450 (201) 327‑8600
- 703 Main StPaterson, NJ 07503 (973) 782‑9175
Group practices
Medicare enrollment lists Breehan K. Chancellor as a member of this group (CMS data updated October 2, 2026).
- Neurosurgical Associates of New Jersey, P.C.42 clinicians in the group
Specialties
- Neurologyprimary
- Interventional Radiologyalso
Other neurologists in Ridgewood
Clinicians with the same Medicare primary specialty in Ridgewood, NJ — not a recommendation.
Other clinicians in Neurosurgical Associates of New Jersey, P.C.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Js Weill Medical College, Cornell University |
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649513474 |
| 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