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MERCY CLINIC SPECIALISTS SERVICES-ILLINOIS LLC

PAC 1254629801 Physician group
HEMATOLOGY/ONCOLOGY · COLUMBIA, IL · hospital-affiliated
Specialty HEMATOLOGY/ONCOLOGY — most common member specialty (multi-specialty groups carry one label; see Methods)
Footprint Registered in COLUMBIA, IL · bills Medicare in 2 states (IL, IN)
Scale 7 providers on the CMS registry roster · 16 codes billed (five-year data window) · 2,840 services (all billed codes, CY2024)
Medicare paid $190K · across all billed codes, CY2024, attributed & disclosed
Affiliation Hospital-affiliated — at least one member holds a hospital affiliation in the CMS registry
Contact (314) 842-0602 — CMS registry listing
CMS Doctors & Clinicians registry · Medicare Part B physician/supplier claims · figures are attributed (single-group clinicians) and disclosed fee-for-service — a subset, never complete totals · group series shown over the most recent 5 years (rosters archived from 2019)
Group analytics

Who's billing in this group, plus the paid volume analytics · CY2024

Clinician makeup · CY2024
Physicians 4Advanced-practice 2Other clinicians 0= 6 clinicians billed · CY2024
By clinician headcount, CY2024. 'Physician' follows Medicare's §1861(r) definition (MD/DO, podiatry, optometry, dental medicine, chiropractic); facility and supplier enrollments are not counted as clinicians. These 6 are the clinicians who billed in CY2024 — a subset of the all-time registry roster shown on the group's identity card.

Billed 13 of the group's 16 codes this year, across 2 states (CY2024).

The full analytics for this group

Premium

The billed-volume rank, trajectory, and economics behind this group — computed on the same disclosed Medicare Part B data.

What Medicare paid this group in CY2024 is on the group's identity card — free, on every tier. Premium breaks that figure down per code and per service, and puts the volume behind it in national and peer context.

  • Per-code payment breakdown & avg $/service — dollars behind the volume
  • Beneficiary-episode volume — reach, not just service counts
  • Office vs. facility setting mix — place-of-service code split
  • National billed-volume rank — percentile, cohort & year disclosed
  • Size-peer billed-volume benchmark — vs. groups of similar size
  • Top-3 clinician share — how volume distributes
  • 5-year volume trend — direction across the window
  • Business mix — largest codes by payment

Rank and benchmark figures are billed-volume positions among peers, not measures of care. All figures attributed (single-group clinicians) and disclosed Medicare Part B fee-for-service.

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Medicare Part B FFS · CY2024 · as published by CMS
Data year: CY2024 CY2023 CY2022  CY2021  CY2020 

Provider volumes, all codes · CY2024

NPIProviderCredentialsTypeCitySt Services (all codes)
1154396182 Arshad, Syed MD Medical Oncology MaryvilleIL
1861450280 Von Bun, Elisabeth M.D. Hematology-Oncology JeffersonvilleIN
1609923598 Ahmad, Farhaan · member of 2 groups MD Cardiology St LouisMO
1992438378 Riegert, Ashley · member of 2 groups FNP-BC Nurse Practitioner Saint LouisMO
1477911857 Rippelmeyer, Aaron · member of 2 groups ANP-BC Nurse Practitioner Saint LouisMO
1528407822 Sheehy, Justin · member of 2 groups M.D. Interventional Cardiology Saint LouisMO

Volumes are attributed to a group only for clinicians affiliated with exactly one group. Clinicians in several groups are listed ("member of N groups") but shown as "—" — their volume is not attributed to any single group. A "—" on a single-group clinician means CMS suppressed the figure (fewer than 11 beneficiaries), never zero. Beneficiary-episodes count CMS's per-setting beneficiary figures, not unique patients. Average Medicare payment is the amount Medicare actually paid per service, weighted by service volume across office and facility settings. Where the roster is a single clinician, that clinician's service counts match the group's attributed volume shown on the ranked results, so they are shown here; the per-provider split across a larger roster is a premium feature. See Methods & Sources.