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.

Gregory Hertwig (NPI 1013303627)

Gregory Hertwig is a anesthesiology physician provider located in Spartanburg, South Carolina. This profile covers 14 Medicare and 0 Medicaid CPT/HCPCS procedure codes, with claims volume, average reimbursement, and total revenue by code, benchmarked against other providers billing the same services.

Provider details (source: NPPES NPI Registry)

Medicare: Complete Services Breakdown

Field	Value
Entity Type	Individual
Organization	Gregory Hertwig
Address	101 E Wood St
City	Spartanburg
State	SC
ZIP	29303
Taxonomy	Anesthesiology Physician
NPI Enumerated	April 9, 2015

Payer Source	Total Paid
Medicare	$16.2K
Medicaid	$0

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

14 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,…	10	$190	$2.7K
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…	70	$30	$2.2K
01926	The provider performs anesthesia services for a patient undergoing therapeutic interventional radiological procedures involving the arteries that are intracranial, or situated within the skull;…	20	$110	$1.8K
00790	The provider performs anesthesia services for a patient undergoing intraperitoneal procedures in the upper abdomen, including laparoscopy, which are not specified by any other anesthesia code.	10	$130	$1.7K
00840	The provider performs anesthesia services for a patient undergoing intraperitoneal procedures in the lower abdomen, including laparoscopy, which are not specified by any other anesthesia code.	10	$110	$1.2K
00731	The anesthesia provider performs anesthesia services for an unspecified type of upper gastrointestinal endoscopic procedure during which another provider introduces the endoscope to but not beyond…	20	$50	$1.1K
01844	The provider performs anesthesia services for a patient undergoing a vascular shunt procedure, or shunt revision of any type, such as for dialysis.	10	$80	$920
64420	The provider injects an anesthetic agent and/or steroid in one of the ventral branches of the thoracic spinal nerves located under each rib, called an intercostal nerve. Report this code for one or…	20	$60	$900
76937	The provider uses ultrasound to help guide procedures requiring vascular access including central venous, peripheral venous, or arterial access procedures.	70	$10	$790
00812	The provider performs anesthesia services for a patient undergoing a screening colonoscopy during which the surgical provider introduces an endoscope into the intestines below the duodenum, the part…	20	$50	$770

Showing 1–10 of 14

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
01844	38	50	30	$90	$4.3K
00537	95	150	20	$180	$4.1K
01926	46	80	20	$140	$3.3K
00811	601	740	20	$70	$3.2K
00812	277	410	20	$70	$2.6K
00731	443	850	20	$70	$2.6K
00840	136	150	20	$130	$2.3K
00790	138	240	10	$140	$2.2K
64447	169	180	20	$40	$1.2K
64420	3	10	20	$60	$940

Gregory Hertwig — Billing Profile & Reimbursement Data

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Gregory Hertwig — Billing Profile & Reimbursement Data

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Medicare: Total Revenue Breakdown by CPT/HCPCS Code

Medicare: Complete Services Breakdown

Medicare: Competitive Analysis & Benchmarks

Frequently Asked Questions

References