Quick answers
- Does Sharon K. Fey accept Medicare assignment?
- Yes. Medicare's clinician data says Sharon K. Fey 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 Sharon K. Fey see?
- In 2024, CMS data shows 93 Original Medicare patients and 1,327 services for Sharon K. Fey. This counts Original Medicare only and measures volume, not quality.
- What is Sharon K. Fey's NPI number?
- 1043265176. 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 Sharon K. Fey, 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 | 93 |
|---|---|
| Services billed to Medicare | 1,327 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 61 |
Most frequent services
- Dialysis services, per day, less than full month service (20 years or older) (90970)1,250 services
- Dialysis services, 2-3 physician visits per month (20 years or older) (90961)38 services
- Dialysis services, 4 or more physician visits per month (20 years or older) (90960)23 services
- Dialysis services, 1 physician visit per month (20 years or older) (90962)16 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%
- Chronic kidney disease75%
- Diabetes66%
- Heart failure51%
- Ischemic heart disease45%
Hospitals where Sharon K. Fey works
Medicare's Facility Affiliation Data lists Sharon K. Fey 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.
- Floyd Valley HealthcareLe Mars, IA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 161368
- Sioux Center HealthSioux Center, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161346
- St Lukes Regional Medical CenterSioux City, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160146
Practice locations
Addresses where Sharon K. Fey is enrolled with Medicare (CMS data updated October 2, 2026).
- 801 5th StSioux City, IA 51101 (712) 255‑7746
Group practices
Medicare enrollment lists Sharon K. Fey as a member of this group (CMS data updated October 2, 2026).
- Liem Som Oei MD PC6 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Sioux City
Clinicians with the same Medicare primary specialty in Sioux City, IA — not a recommendation.
Other clinicians in Liem Som Oei MD PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043265176 |
| 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