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 Tennessee for Medicaid) — rank 1 means the highest claims volume for that code.

Why is the Medicaid comparison limited to Tennessee 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. Tennessee (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 Walker (NPI 1770551368)

Field	Value
Entity Type	Individual
Organization	William Walker
Address	10810 Parkside Dr Ste 208
City	Knoxville
State	TN
ZIP	37934
Taxonomy	Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
NPI Enumerated	March 9, 2006

Payer Source	Total Paid
Medicare	$133.8K
Medicaid	$0

Medicare: Complete Services Breakdown

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

7 rows

CPT/HCPCS Code	Description	Claims	Avg Paid	Revenue
33533	Coronary artery bypass, using arterial graft(s); single arterial graft	60	$1,250	$79.7K
33361	The provider uses a catheter to insert an aortic valve replacement through the lumen of a catheter, in a service known as TAVI or TAVR. This code is specific to inserting the valve using a…	70	$530	$36.2K
33518	The provider diverts blood flow from damaged vessels in the heart by grafting two vein segments taken from another location, such as the leg, while the patient is undergoing a coronary artery bypass…	30	$280	$8.8K
33519	The provider diverts blood flow from damaged vessels in the heart by grafting three vein segments taken from another location, such as the leg, while the patient is undergoing a coronary artery…	10	$390	$5.1K
33517	The provider diverts blood flow from damaged vessels in the heart by grafting a single vein segment taken from another location, such as the leg, while the patient is undergoing a coronary artery…	20	$130	$2.2K
33268	At the same session as a primary procedure requiring sternotomy or thoracotomy, the provider performs exclusion, such as by excision, of the left atrial appendage, a small, pouchlike sac in the top…	10	$90	$1.1K
33508	The provider employs surgical endoscopy to visualize structures surrounding the vein he harvests for a coronary artery bypass procedure.	70	$10	$760

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 7 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. Tennessee Distribution

William Walker — 2 of 7 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — Tennessee

Full comparison — all codes billed, vs. state median

7 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
33533	6	60	20	$970	$27.2K
33361	10	60	40	$540	$23.6K
33519	6	10	10	$360	$5.4K
33518	2	30	20	$250	$4.2K
33517	2	10	10	$120	$1.7K
33268	6	10	20	$70	$1.4K
33508	3	50	20	$10	$260

Related Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Wellmont Medical Associates Inc	VA	Family Medicine Physician	$0	$24.6M
Takoma Regional Hospital Inc	TN	General Acute Care Hospital	$0	$20.1M
Knoxville Hma Physician Management, LLC	TN	Pulmonary Disease Physician	$0	$8.7M
Blue Ridge Medical Management Corporation	TN	Family Nurse Practitioner	$0	$8M
Wellmont Cardiology Services	TN	Cardiovascular Disease Physician	$0	$3.1M
Blue Ridge Medical Management Corporation	TN	Pediatrics Physician	$0	$2.9M
Blue Ridge Medical Management Corporation	TN	Internal Medicine Physician	$0	$2.8M
Blue Ridge Medical Managgement Corporation	TN	Internal Medicine Physician	$0	$2.2M
Sara Dajani	TN	Family Nurse Practitioner	$1.6M	$0
Martin Palmeri	NC	Hematology & Oncology Physician	$931.8K	$0

Nearby Providers

Other providers in the same ZIP code as William Walker, ranked by combined Medicare and Medicaid revenue.

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
East Tennessee Children's Hospital Association, Inc	TN	Durable Medical Equipment & Medical Supplies	$0	$20.3M
Matthew Cole	TN	Ophthalmology Physician	$3.3M	$0
Otolaryngology Head And Neck Surgery Associates	TN	Specialist	$0	$2.3M
Eric Redmon	TN	Family Medicine Physician	$217.4K	$643.2K
Endoscopy Center Of Knoxville LP	TN	Ambulatory Surgical Clinic/Center	$488.2K	$0
Michael Collier	TN	Internal Medicine Physician	$244.4K	$0
Nilamkumar Patel	TN	Clinical Cardiac Electrophysiology Physician	$227.9K	$0
Kimberly Lowe	TN	Family Nurse Practitioner	$204.6K	$0
Harold Silver	TN	Gastroenterology Physician	$199.2K	$100
Kyler Thomas	TN	Foot & Ankle Surgery Podiatrist	$194.9K	$0

William Walker — Billing Profile & Reimbursement Data

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William Walker — 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

Nearby Providers

Frequently Asked Questions

References