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 District of Columbia for Medicaid) — rank 1 means the highest claims volume for that code.

Why is the Medicaid comparison limited to District of Columbia 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. District of Columbia (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.

Thomas Chang (NPI 1689672743)

Field	Value
Entity Type	Individual
Organization	Thomas Chang
Address	3800 Reservoir Rd Nw
City	Washington
State	DC
ZIP	20007
Taxonomy	Vascular & Interventional Radiology Physician
NPI Enumerated	July 13, 2005

Payer Source	Total Paid
Medicare	$26.7K
Medicaid	$0

Medicare: Complete Services Breakdown

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

11 rows

CPT/HCPCS Code	Description	Claims	Avg Paid	Revenue
36558	The provider places a catheter, without a subcutaneous port or pump in one of the major veins carrying the blood to the heart or directly into the right atrium, to administer medication, nutrients,…	30	$230	$5.9K
32555	In this procedure, the provider removes the fluid, blood, or air from the space between the lungs and chest wall using a needle or catheter. He performs the procedure using imaging guidance.	60	$90	$5.5K
36561	A central venous access catheter is a device that the physician inserts beneath the skin to draw blood or administer medication/nutrients to the patient. The catheter's tip must terminate in the…	10	$290	$4.1K
49083	In this procedure, the provider withdraws an abnormal buildup of fluid from the abdominal cavity to relieve pressure and pain or to obtain a sample to submit to a laboratory for analysis. He…	40	$90	$3.6K
50432	The provider uses ultrasound and/or fluoroscopy (imaging technologies that display live images on a video monitor) to place a catheter through the skin (percutaneously) into the renal pelvis to…	10	$210	$2.3K
77012	In this procedure, the provider performs supervision and interpretation for a separately reportable procedure that uses computed tomography guided needle placement, as in biopsy or aspiration. Report…	30	$60	$1.6K
99152	The provider performing a diagnostic or therapeutic procedure administers medication to reduce consciousness, but not render the patient unconscious or asleep, in a patient five years of age or…	100	$10	$1.1K
49450	Under fluoroscopic guidance, the provider replaces the existing gastrostomy tube, cecostomy tube, or other colon tube through the skin. Providers may exchange the tube when the existing tube becomes…	20	$50	$950
77001	Report this code as an add–on code to the primary procedure code, such as central venous access devices (CVAD) placement, replacement, or removal, including accessing the vessel, manipulating the…	60	$20	$830
76937	The provider uses ultrasound to help guide procedures requiring vascular access including central venous, peripheral venous, or arterial access procedures.	50	$10	$610

Showing 1–10 of 11

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 11 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. District of Columbia Distribution

Thomas Chang — 0 of 11 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — District of Columbia

Full comparison — all codes billed, vs. state median

11 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
36561	10	10	20	$270	$5.9K
36558	3	20	20	$230	$4.7K
49083	4	10	30	$80	$3.4K
32555	3	20	30	$90	$3.4K
50432	1	10	10	$200	$2.3K
77012	6	10	20	$60	$1.7K
76942	33	40	20	$40	$1K
49450	1	10	20	$50	$900
99152	10	40	40	$10	$730
77001	3	30	30	$20	$700

Showing 1–10 of 11

Related Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Medstar - Georgetown Medical Center, Inc.	DC	General Acute Care Hospital	$0	$45.6M
Matthew Kilbridge	MD	Vascular & Interventional Radiology Physician	$6.8M	$0
Hyun Bang	MD	Vascular & Interventional Radiology Physician	$1.5M	$840

Thomas Chang — Billing Profile & Reimbursement Data

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Thomas Chang — 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