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

Why is the Medicaid comparison limited to Nevada 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. Nevada (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.

Bess Chang (NPI 1942228515)

Field	Value
Entity Type	Individual
Organization	Bess Chang
Address	8530 W Sunset Rd Ste 350
City	Las Vegas
State	NV
ZIP	89113
Taxonomy	Neurology Physician
NPI Enumerated	July 18, 2006

Payer Source	Total Paid
Medicare	$5.2M
Medicaid	$0

Key Findings

This provider is effectively a Medicare-only biller: lifetime Medicare revenue is $5.2M and there is no Medicaid billing on file, so payer mix is single-payer in practice and analyses should treat this as a Medicare-dominant profile. The absence of Medicaid claims limits comparisons with in‑state Medicaid peers and suggests the provider’s operations are oriented toward Medicare-aged or disabled populations.

Revenue is highly concentrated in a very small set of procedure/product codes: the precomputed top-3 Medicare codes account for 87.7% of this provider's total Medicare revenue, with J1556 alone representing $4.1M and 79.4% of Medicare revenue. This concentration indicates the practice’s financial performance depends on a single product/service line and creates exposure to reimbursement or utilization changes for those specific codes.

Service-line mix points to an infusion- and procedure-focused neurology practice: the dominant code J1556 (J1556 – Injection, immune globulin (bivigam), 500 mg) with 74.1K claims and $4.1M revenue, plus high-volume administration codes such as 96365, 96366, and 96375, indicate extensive use of intravenous therapies/infusions. Concurrently, high-volume procedural neurology services appear in electrodiagnostic testing codes like 95913 (901 claims, $197.3K) and 95886 (1.8K claims, $141.4K), signaling an integrated model combining infusion therapy with diagnostic neurology procedures.

Competitive standing is extreme at the national level for several procedure codes: J1556 ranks #2 of 46 providers nationally (98th percentile; extreme outlier, far above typical national volume for this code) and 95913 ranks #1 of 1528 providers nationally (100th percentile; extreme outlier). Several other codes including 95886 (rank #6 of 6525, 100th percentile; extreme outlier) and 95819 (rank #17 of 2575, 99th percentile; extreme outlier) reinforce that this provider is a national outlier in specific procedural volumes rather than a typical local-volume clinic.

While procedural and infusion codes dominate revenue, E/M activity is nontrivial in count and high relative rank: 99215 shows 1K claims and $133.8K revenue and ranks #258 of 145531 providers nationally (100th percentile; extreme outlier), indicating substantial high‑complexity outpatient encounters are being billed alongside procedure work. This suggests the practice manages medically complex patients who both receive high-acuity office visits and procedural treatments in the same practice setting.

Operational signal from ancillary medications and administration supply codes is consistent with an infusion center workflow: J1200 appears with 845 claims (rank #20 of 3826, 99th percentile; extreme outlier, far above typical national volume) and other drug/administration codes such as J0585 (46.4K claims, $232.2K, rank #92 of 3636, 97th percentile) further highlight a high-throughput medication administration environment. These patterns support the interpretation of a practice organized around frequent injections/infusions and associated monitoring.

Tenure and provider stability are long-standing: the NPI was enumerated on 2006-07-18 (~20 years ago), indicating an established presence in the market. Given the longevity plus the outsized national ranks on multiple procedural codes, this appears to be a sustained, specialized operation rather than a recent build-up in volume.

Medicare: Complete Services Breakdown

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

20 rows

CPT/HCPCS Code	Description	Claims	Avg Paid	Revenue
J1556	Injection, immune globulin (bivigam), 500 mg	74,080	$60	$4.1M
J0585	Injection, onabotulinumtoxina, 1 unit	46,430	$10	$232.2K
95913	In this procedure, the provider performs 13 or more nerve conduction studies, a diagnostic test to evaluate function, especially the electrical conduction ability of the motor and sensory nerves of…	900	$220	$197.3K
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…	1,840	$80	$141.4K
95819	Electroencephalogram or EEG is a diagnostic test that uses small electrodes attached to the scalp to measure the electrical activity of the brain. In this procedure the provider performs the EEG…	410	$340	$139.1K
99215	The provider sees an established patient for an office visit or other outpatient visit involving evaluation and management. The visit involves a high level of medical decision making, and/or the…	1,010	$130	$133.8K
95957	In this procedure, the provider performs computer based analysis of an electroencephalogram, abbreviated as EEG.	380	$220	$82.4K
96365	The provider administers the initial intravenous infusion of a medication or other substance for a period up to one hour to prevent, treat, or diagnose a condition or disease.	1,030	$50	$51.4K
96366	The provider administers an intravenous infusion or infusions of a medication for an additional hour or subsequent hours after the first hour to prevent, treat, or diagnose a condition or disease.	1,430	$20	$22.8K
99205	The provider sees a new patient for an office visit or other outpatient visit involving evaluation and management. The visit involves a high level of medical decision making, and/or the provider…	120	$160	$18.5K

Showing 1–10 of 20

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 20 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. Nevada Distribution

Bess Chang — 9 of 19 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — Nevada

Full comparison — all codes billed, vs. state median

20 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
J1556	2	10	75,880	$60	$4.3M
J0585	1	30	5,760	$1	$44.8K
95913	1	20	50	$220	$34.8K
95886	1	50	150	$70	$21.6K
99214	2,126	3,610	110	$80	$19K
95957	2	20	30	$170	$13.1K
95819	2	40	30	$170	$12.8K
99215	2	790	40	$120	$12.2K
95912	15	20	30	$190	$11.3K
96365	3	90	110	$50	$9.7K

Showing 1–10 of 20

Nearby Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Mercy Inc	NV	Ambulance	$5.1M	$47.2M
Fielden Hanson Isaacs Miyada Robison Yeh Ltd	NV	Anesthesiology Physician	$0	$13.9M
Dignity Health	NV	General Acute Care Hospital	$0	$8M
Vituity - Nevada Koury & Partners PLLC	NV	Emergency Medicine Physician	$0	$6.7M
Center For Wellness And Pain Care Of Las Vegas Inc	NV	Pain Medicine (Anesthesiology) Physician	$0	$6.5M
Independent Life LLC	NV	Home Health Agency	$0	$5.4M
Fresenius Medical Care Spring Valley, LLC	NV	End-Stage Renal Disease (ESRD) Treatment Clinic/Center	$0	$5.2M
Doctor's Health Network, Inc.	NV	Endocrinology, Diabetes & Metabolism Physician	$0	$4.5M
Childrens Urology Associates, LLC	NV	Pediatric Urology Physician	$0	$2.7M
Irene Voo	NV	Ophthalmology Physician	$2.7M	$0

Bess Chang — Billing Profile & Reimbursement Data

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Bess Chang — Billing Profile & Reimbursement Data

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Key Findings

Medicare: Total Revenue Breakdown by CPT/HCPCS Code

Medicare: Complete Services Breakdown

Medicare: Competitive Analysis & Benchmarks

Nearby Providers

Frequently Asked Questions

References