Quick answers
- Does Marguerite Mullin accept Medicare assignment?
- Yes. Medicare's clinician data says Marguerite Mullin 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 Marguerite Mullin see?
- In 2024, CMS data shows 108 Original Medicare patients and 108 services for Marguerite Mullin. This counts Original Medicare only and measures volume, not quality.
- What is Marguerite Mullin's NPI number?
- 1821580242. 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 Marguerite Mullin, 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 | 108 |
|---|---|
| Services billed to Medicare | 108 |
| Different services or procedures | 41 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Anesthesia for total hip replacement (01214)13 services
- Anesthesia for procedure for total knee joint replacement (01402)12 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%
- Arthritis63%
- Ischemic heart disease40%
- Chronic kidney disease33%
- Diabetes29%
Hospitals where Marguerite Mullin works
Medicare's Facility Affiliation Data lists Marguerite Mullin 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
- Newton Medical CenterNewton, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310028
- Overlook Medical CenterSummit, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310051
Practice locations
Addresses where Marguerite Mullin is enrolled with Medicare (CMS data updated October 2, 2026).
- 110 Rehill AveSomerville, NJ 08876 (908) 685‑2200
- 175 High StNewton, NJ 07860 (973) 383‑2121
- 703 Main StPaterson, NJ 07503 (973) 754‑2000
- 94 Old Short Hills RdLivingston, NJ 07039
- 99 Beauvoir AveSummit, NJ 07901 (908) 522‑2000
Group practices
Medicare enrollment lists Marguerite Mullin as a member of these groups (CMS data updated October 2, 2026).
- RWJBH Observation Associates LLC1,008 clinicians in the group
- Anesthesia Associates of Morristown PA167 clinicians in the group
- North American Partners in Anesthesia of New Jersey LLC162 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), New Jersey →
Other nurse anesthetists in Somerville
Clinicians with the same Medicare primary specialty in Somerville, NJ — not a recommendation.
Other clinicians in RWJBH Observation Associates LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821580242 |
| 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