Quick answers
- Does Sonia A. Szlyk accept Medicare assignment?
- Yes. Medicare's clinician data says Sonia A. Szlyk 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 Sonia A. Szlyk see?
- In 2024, CMS data shows 58 Original Medicare patients and 93 services for Sonia A. Szlyk. This counts Original Medicare only and measures volume, not quality.
- What is Sonia A. Szlyk's NPI number?
- 1487775086. 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 Sonia A. Szlyk, 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 | 58 |
|---|---|
| Services billed to Medicare | 93 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)15 services
- Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)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).
- Arthritis75%
- High cholesterol50%
- High blood pressure38%
- Ischemic heart disease22%
Hospitals where Sonia A. Szlyk works
Medicare's Facility Affiliation Data lists Sonia A. Szlyk 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.
- Intermountain Health Park City HospitalPark City, UT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 460057
Practice locations
Addresses where Sonia A. Szlyk is enrolled with Medicare (CMS data updated October 2, 2026).
- 900 Round Valley DrPark City, UT 84060 (435) 658‑7000
Group practices
Medicare enrollment lists Sonia A. Szlyk as a member of this group (CMS data updated October 2, 2026).
- Mountain West Anesthesia LLC271 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Park City
Clinicians with the same Medicare primary specialty in Park City, UT — not a recommendation.
Other clinicians in Mountain West Anesthesia LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | George Washington University School Of Medicine |
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1487775086 |
| 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