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

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

Herng-yu Chang (NPI 1508209339)

Field	Value
Entity Type	Individual
Organization	Herng-yu Chang
Address	11890 Healing Way
City	Silver Spring
State	MD
ZIP	20904
Taxonomy	Anesthesiology Physician
NPI Enumerated	April 11, 2013

Payer Source	Total Paid
Medicare	$15.1K
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
00537	The provider performs anesthesia services for a patient undergoing cardiac electrophysiologic procedures, such as mapping, pacing, recording, arrhythmia induction, lead testing, and similar services,…	20	$330	$6.2K
00530	The provider performs anesthesia services for a patient undergoing the procedure of permanent transvenous pacemaker insertion in which another provider inserts a device via a blood vessel in the neck…	30	$140	$3.6K
00534	The provider performs anesthesia services for a patient undergoing the procedure of transvenous cardioverter–defibrillator insertion in which another provider inserts a device, via a blood vessel in…	10	$230	$3.2K
00410	The provider performs anesthesia services for a patient undergoing a procedure on the skin of the upper and lower limbs, the front aspect of the chest and abdomen, or the perineum. For this code, the…	20	$90	$1.4K
36620	In this procedure, the provider inserts a catheter percutaneously (through the skin) into an artery and uses this catheter for the purpose of sampling, transfusion, or continuous real–time blood…	20	$40	$610

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. Maryland Distribution

Herng-yu Chang — 1 of 5 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — Maryland

Full comparison — all codes billed, vs. state median

5 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
00537	36	80	20	$280	$6.4K
00534	5	10	10	$160	$2.4K
00530	2	50	10	$140	$2.2K
00410	23	60	20	$70	$1.3K
36620	155	250	20	$40	$920

Related Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Usacs Integrated Acute Care Services Of Maryland, LLC	MD	Internal Medicine Physician	$0	$7.7M
Naveed Shah	RI	Pulmonary Disease Physician	$1.4M	$0
Joshua Aaron	MD	Pulmonary Disease Physician	$443.6K	$44.6K
Abbas Omais	MD	Pulmonary Disease Physician	$454.3K	$9K
Hasan Abed	MD	Pain Medicine (Anesthesiology) Physician	$372.3K	$0
Joseph Ball	MD	Pulmonary Disease Physician	$359.9K	$0
Oluseyi Fadayomi	MD	Anesthesiology Physician	$333.3K	$0
Muhammad Shibli	DC	Pulmonary Disease Physician	$320.3K	$0
Alemeshet Gudeta	MD	Internal Medicine Physician	$296.1K	$0
John Autry	SC	Emergency Medicine Physician	$105K	$161.4K

Nearby Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Community Radiology Associates Inc	MD	Diagnostic Radiology Physician	$0	$27.8M
Mission Autism Clinics LLC	MD	Behavior Analyst	$0	$21.6M
Children's Pediatricians & Associates, LLC	MD	Pediatrics Physician	$0	$17.5M
Dr. Camps Pediatric Dental Center	MD	Pediatric Dentistry	$0	$16.1M
Thrive Behavioral Health, LLC	MD	Community/Behavioral Health Agency	$0	$12.8M
White Oak Pediatrics Drs Battiata & Impeduglia PA	MD	Pediatrics Physician	$0	$12.3M
Jsk Care Group, LLC	MD	Adult Day Care Clinic/Center	$0	$11.8M
Rock Creek Foundation For Mental Health Inc	MD	Developmental Disabilities Clinic/Center	$0	$10.2M
Adventist Healthcare, Inc.	MD	General Acute Care Hospital	$0	$4.5M
Kashif Ali	MD	Hematology & Oncology Physician	$3.6M	$0

Herng-yu Chang — Billing Profile & Reimbursement Data

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Herng-yu 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

Nearby Providers

Frequently Asked Questions

References