Why are Medicare and Medicaid shown separately instead of combined?

They come from two different CMS data sources with no shared claim identifier, so they can't be reconciled into one number without double-counting or guessing. Every table and chart on this page keeps them fully separate.

Why is there no private/commercial revenue figure?

Private and commercial payer data comes from Transparency in Coverage files, which only publish negotiated rates — not claims or utilization volume. Without a volume figure, no revenue number can be computed for any provider from that data.

What does "Rank" mean in the Competitive Analysis & Benchmarks tables?

For a given CPT/HCPCS code, it's this provider's position by claims volume among all providers billing that same code at that geography level (State, National, or Missouri for Medicaid) — rank 1 means the highest claims volume for that code.

Why is the Medicaid comparison limited to Missouri only?

Medicaid is administered per-state with no single national fee schedule, so a state or national comparison the way Medicare has one isn't available. Missouri (this provider's own state) is the only grouping that's conceptually meaningful.

Why are the numbers rounded to the nearest 10?

To avoid implying more precision than the underlying data supports at a single-provider level. Ratios are kept precise since they're a relative comparison, not a volume or dollar figure.

How current is this data?

The Medicare and Medicaid tables are both single current snapshots, not refreshed on a recurring schedule yet.

William Chapman (NPI 1790703270)

Field	Value
Entity Type	Individual
Organization	William Chapman
Address	4921 Parkview Pl
City	Saint Louis
State	MO
ZIP	63110
Taxonomy	Transplant Surgery Physician
NPI Enumerated	July 17, 2006

Payer Source	Total Paid
Medicare	$88.9K
Medicaid	$0

Medicare: Complete Services Breakdown

The CPT/HCPCS codes generating the most Medicare revenue for this provider.

6 rows

CPT/HCPCS Code	Description	Claims	Avg Paid	Revenue
47135	The provider performs an allotransplantation of a liver, where she transfers a part or the entire liver from a donor individual to a recipient patient. In this procedure, the provider transfers…	10	$4,160	$54.1K
50360	The provider transplants a kidney and ureter from a cadaver or living donor into a recipient. The provider does not remove a kidney (nephrectomy) from the recipient.	10	$1,940	$23.3K
99232	The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a moderate level of medical decision making or…	70	$60	$4.3K
99231	The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a straightforward or low level of medical…	90	$40	$3.7K
47143	In this procedure, the provider performs backbench standard preparation of a liver from a cadaver donor before transplantation. The procedure includes removing the gallbladder, if needed, and removal…	10	$210	$2.8K
50323	The provider makes a donor kidney, from a cadaver, ready for transplantation through a standard back table preparation.	10	$60	$710

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 6 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. Missouri Distribution

William Chapman — 0 of 6 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — Missouri

Full comparison — all codes billed, vs. state median

6 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
47135	1	10	10	$3,800	$49.4K
50360	9	10	20	$1,580	$37.9K
99232	2,492	4,320	90	$60	$10.8K
47143	1	10	10	$220	$2.8K
99231	244	1,390	40	$40	$2.4K
50323	7	10	20	$50	$1.1K

Related Providers

Other providers that share a Tax Identification Number (TIN) with William Chapman, ranked by combined Medicare and Medicaid revenue.

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Brian Rubin	MO	Vascular Surgery Physician	$167.7K	$57.2K
Brent Allen	MO	Vascular Surgery Physician	$205K	$0
Patrick Geraghty	MO	Vascular Surgery Physician	$142.9K	$55.2K
Luis Sanchez	MO	Vascular Surgery Physician	$152.6K	$44.1K
Joshua Palka	MI	Urology Physician	$183.3K	$0
Julie Margenthaler	MO	Surgical Oncology Physician	$122.1K	$0
Christopher Arett	MO	Urology Physician	$101.2K	$0
Hing Hung Lai	IA	Urology Physician	$99.9K	$0
Leigh Dageforde	TN	Surgery Physician	$93.9K	$0
Kushan Radadia	GA	Urology Physician	$91.7K	$0

William Chapman — Billing Profile & Reimbursement Data

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William Chapman — Billing Profile & Reimbursement Data

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Medicare: Total Revenue Breakdown by CPT/HCPCS Code

Medicare: Complete Services Breakdown

Medicare: Competitive Analysis & Benchmarks

Related Providers

Frequently Asked Questions

References