Quick answers
- Does Marcus J. Magnussen accept Medicare assignment?
- Yes. Medicare's clinician data says Marcus J. Magnussen 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 Marcus J. Magnussen see?
- In 2024, CMS data shows 329 Original Medicare patients and 6,549 services for Marcus J. Magnussen. This counts Original Medicare only and measures volume, not quality.
- What is Marcus J. Magnussen's NPI number?
- 1457678187. 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 Marcus J. Magnussen, 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 | 329 |
|---|---|
| Services billed to Medicare | 6,549 |
| Different services or procedures | 35 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Injection, onabotulinumtoxina, 1 unit (J0585)5,600 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)256 services
- Needle measurement of electrical activity in arm or leg muscles, complete study (95886)130 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)59 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)51 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%
- Arthritis53%
- Depression44%
- Stroke or mini-stroke44%
- Anxiety43%
Hospitals where Marcus J. Magnussen works
Medicare's Facility Affiliation Data lists Marcus J. Magnussen 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.
- Ascension St Vincent CarmelCarmel, IN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 150157
- Community Hospital EastIndianapolis, IN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 150074
- Community Hospital NorthIndianapolis, IN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 150169
- Riverview HealthNoblesville, IN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 150059
- St Vincent Heart CenterCarmel, IN · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 150153
Practice locations
Addresses where Marcus J. Magnussen is enrolled with Medicare (CMS data updated October 2, 2026).
- 12188 A N Meridian St, Suite 320Carmel, IN 46032 (317) 580‑0420
- 1400 N Ritter Ave, Suite 220Indianapolis, IN 46219 (317) 715‑5600
Group practices
Medicare enrollment lists Marcus J. Magnussen as a member of this group (CMS data updated October 2, 2026).
- Josephson-Wallack-Munshower Neurology PC60 clinicians in the group
Specialties
- Neurologyprimary
Other neurologists in Carmel
Clinicians with the same Medicare primary specialty in Carmel, IN — not a recommendation.
Other clinicians in Josephson-Wallack-Munshower Neurology PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2010 (16 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457678187 |
| 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