Quick answers
- Does Shana L. Vifian Ray accept Medicare assignment?
- Yes. Medicare's clinician data says Shana L. Vifian Ray 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 Shana L. Vifian Ray see?
- In 2024, CMS data shows 408 Original Medicare patients and 512 services for Shana L. Vifian Ray. This counts Original Medicare only and measures volume, not quality.
- What is Shana L. Vifian Ray's NPI number?
- 1033327184. 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 Shana L. Vifian Ray, 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 | 408 |
|---|---|
| Services billed to Medicare | 512 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 67 |
Most frequent services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)139 services
- Home sleep test (hst) with type iv portable monitor, unattended; minimum of 3 channels (G0400)105 services
- Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)78 services
- Sleep study in sleep lab (6 years or older) (95810)74 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)73 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 pressure67%
- High cholesterol65%
- Arthritis35%
- Anxiety29%
- Diabetes26%
- Ischemic heart disease25%
Hospitals where Shana L. Vifian Ray works
Medicare's Facility Affiliation Data lists Shana L. Vifian Ray 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.
- Marshfield Medical CenterMarshfield, WI · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 520037
- Marshfield Medical Center - Eau ClaireEau Claire, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520210
- Marshfield Medical Center - LadysmithLadysmith, WI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 521328
- Marshfield Medical Center - Rice LakeRice Lake, WI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 520011
- Mayo Clinic Health System Eau Claire HospitalEau Claire, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520070
Practice locations
Addresses where Shana L. Vifian Ray is enrolled with Medicare (CMS data updated October 2, 2026).
- 1000 N Oak AveMarshfield, WI 54449 (715) 387‑5511
- 1700 W Stout StRice Lake, WI 54868 (715) 236‑6133
- 1700 W Stout St, Suite 400Rice Lake, WI 54868 (715) 236‑6133
- 2310 Craig RdEau Claire, WI 54701 (715) 858‑8100
- 2655 County Hwy IChippewa Falls, WI 54729 (715) 726‑4200
Group practices
Medicare enrollment lists Shana L. Vifian Ray as a member of these groups (CMS data updated October 2, 2026).
- MCHS Hospitals Inc1,197 clinicians in the group
- Lakeview Medical Center Inc of Rice Lake168 clinicians in the group
Specialties
- Neurologyprimary
Other neurologists in Marshfield
Clinicians with the same Medicare primary specialty in Marshfield, WI — not a recommendation.
Other clinicians in MCHS Hospitals Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Iowa, Rj & L Carver College Of Medicine |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033327184 |
| 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