Quick answers
- Does Ellen R. Shammash accept Medicare assignment?
- Yes. Medicare's clinician data says Ellen R. Shammash 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 Ellen R. Shammash see?
- In 2024, CMS data shows 150 Original Medicare patients and 9,426 services for Ellen R. Shammash. This counts Original Medicare only and measures volume, not quality.
- What is Ellen R. Shammash's NPI number?
- 1760455208. 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 Ellen R. Shammash, 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 | 150 |
|---|---|
| Services billed to Medicare | 9,426 |
| Different services or procedures | 65 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)114 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)92 services
- Blood creatinine level (82565)69 services
- Insertion of needle into vein for collection of blood sample (36415)68 services
- Measurement c-reactive protein for detection of infection or inflammation (86140)55 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).
- Arthritis75%
- High blood pressure65%
- High cholesterol56%
- Osteoporosis36%
- Depression25%
- Anxiety24%
Hospitals where Ellen R. Shammash works
Medicare's Facility Affiliation Data lists Ellen R. Shammash 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.
- Amery Hospital & ClinicAmery, WI · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 521308
Practice locations
Addresses where Ellen R. Shammash is enrolled with Medicare (CMS data updated October 2, 2026).
- 2651 Hillcrest Dr, Suite 101Hudson, WI 54016 (800) 423‑1088
- 4040 Radio DrWoodbury, MN 55129 (651) 439‑8807
Group practices
Medicare enrollment lists Ellen R. Shammash as a member of this group (CMS data updated October 2, 2026).
- Infinite Health Collaborative, PA833 clinicians in the group
Specialties
- Rheumatologyprimary
- Internal Medicinealso
Other rheumatologists in Hudson
Clinicians with the same Medicare primary specialty in Hudson, WI — not a recommendation.
Other clinicians in Infinite Health Collaborative, PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York University School Of Medicine |
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1760455208 |
| 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