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

Why is the Medicaid comparison limited to South Carolina 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. South Carolina (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 Westerkam (NPI 1376597070)

Field	Value
Entity Type	Individual
Organization	William Westerkam
Address	222 E Medical Ln Ste 100&200
City	West Columbia
State	SC
ZIP	29169
Taxonomy	Physical Medicine & Rehabilitation Physician
NPI Enumerated	May 19, 2006

Payer Source	Total Paid
Medicare	$182.1K
Medicaid	$0

Medicare: Complete Services Breakdown

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

5 rows

CPT/HCPCS Code	Description	Claims	Avg Paid	Revenue
95886	The provider assesses the electrical activity of a muscle in the extremity and related paraspinal areas. At the same session as a separately reportable nerve conduction study. He studies five or more…	1,180	$70	$85K
95911	In this procedure, the provider performs nine or ten nerve conduction studies, a diagnostic test to evaluate function, especially the electrical conduction ability of the motor and sensory nerves of…	390	$150	$60K
95909	In this procedure, the provider performs five or six nerve conduction studies, a diagnostic test to evaluate the function, especially the ability of electrical conduction of the motor and sensory…	350	$100	$32.9K
95910	In this procedure, the provider performs seven or eight nerve conduction studies, a diagnostic test to evaluate the function, especially the electrical conduction ability of the motor and sensory…	20	$130	$2.3K
95912	In this procedure, the provider performs eleven or twelve nerve conduction studies, a diagnostic test to evaluate function, especially the electrical conduction ability of the motor and sensory…	10	$170	$1.9K

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 5 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. South Carolina Distribution

William Westerkam — 3 of 5 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — South Carolina

Full comparison — all codes billed, vs. state median

5 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
95886	1	100	90	$70	$9.8K
95911	1	60	40	$140	$8.8K
95912	27	30	20	$170	$4.7K
95909	1	60	40	$90	$4.6K
95910	35	60	20	$110	$3.6K

Related Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Lexington Health Inc	SC	General Acute Care Hospital	$0	$27.4M
Lexington County Health Services District Inc	SC	General Acute Care Hospital	$0	$19.2M
Lexington Health Inc	SC	Urgent Care Clinic/Center	$0	$8.7M
Lexington Health Inc	SC	Pediatric Adolescent Medicine Physician	$0	$5.7M
Lexington Health Inc	SC	Emergency Medicine Physician	$0	$4.2M
Lexington County Health Serv	SC	General Acute Care Hospital	$0	$4M
Steven Madden	SC	Hematology & Oncology Physician	$4M	$0
Lexington Health Inc	SC	Family Medicine Physician	$0	$4M
Lexington Health Inc	SC	Obstetrics & Gynecology Physician	$0	$3.5M
Vijaya Korrapati	SC	Hematology & Oncology Physician	$3.4M	$0

Nearby Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Palmetto Infusion Services LLC	SC	Infusion Therapy Clinic/Center	$0	$93.6M
United Cerebral Palsy Of South Carolina, Inc	SC	Intellectual and/or Developmental Disabilities Community Based Residential Treatment Facility	$0	$15.7M
Palmetto Retina Center LLC	SC	Ophthalmology Physician	$0	$10.6M
Karen Park Family Dentistry, P.A.	SC	Dentist	$0	$4.2M
John Payne	SC	Ophthalmology Physician	$4M	$0
John Wells	SC	Ophthalmology Physician	$3.9M	$0
Lexington Treatment Specialists LLC	SC	Methadone Clinic	$76.7K	$3.6M
Perrie Ryan	SC	Hematology & Oncology Physician	$3.3M	$0
William Clark	SC	Ophthalmology Physician	$3.3M	$0
Asheesh Lal	SC	Hematology & Oncology Physician	$3.2M	$0

William Westerkam — 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