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

Why is the Medicaid comparison limited to New York 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. New York (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.

Mijeung Gwak (NPI 1568961035)

Field	Value
Entity Type	Individual
Organization	Mijeung Gwak
Address	111 E 210th St
City	Bronx
State	NY
ZIP	10467
Taxonomy	Anesthesiology Physician
NPI Enumerated	February 9, 2018

Payer Source	Total Paid
Medicare	$3.7K
Medicaid	$0

Key Findings

This provider's recorded payer volume is extremely small and effectively single-payer: total Medicare revenue is $3.7K and there is no Medicaid billing on file. With Medicaid absent from the record, Medicare constitutes the entire documented public-payer footprint for this NPI.

Revenue concentration is high and tightly focused: the precomputed top-3 summary shows the top 3 Medicare codes by revenue account for 100.0% of this provider's total Medicare revenue. The visible code mix is therefore driving the entirety of the reported Medicare income, indicating a narrow set of billed services.

Service-line implications from the code descriptions point to an anesthesiology practice that supplies procedural anesthesia across specialties rather than delivering a broad range of independent procedures. The two listed codes are for anesthesia tied to an unspecified lower intestinal endoscopic procedure (00811) and an eye lens procedure (00142), suggesting the provider typically works as an anesthesia specialist supporting endoscopy and ophthalmic surgical teams.

Code-level volume and payment detail for 00811: 21 claims, $111 avg paid/claim, $2.3K revenue (63.4% of this provider's total Medicare revenue). Nationally this code ranks #16243 of 30986 providers (45th percentile) and is characterized in the source as "typical, unremarkable volume," indicating the provider's activity on 00811 is around the middle of the national distribution and not a standout.

Code-level volume and payment detail for 00142: 16 claims, $84 avg paid/claim, $1.3K revenue (36.6% of this provider's total Medicare revenue). That code ranks #15966 of 19760 providers (16th percentile) and is also labeled "typical, unremarkable volume," which in practice places this provider on the lower side of national peers for 00142 but still within a broadly normal range.

Competitive standing across Medicare is modest: with total Medicare revenue of $3.7K and percentile placements at or below the median for the two revenue-driving codes, this NPI represents a small-scale, non-dominant participant in national anesthesiology billing for these procedures. Neither code shows the provider as a major or leading billing entity in its specialty.

Tenure is recent-to-moderate: the NPI was enumerated on 2018-02-09 (~8 years ago). Given the small cumulative Medicare revenue reported since enumeration, the data suggest limited Medicare billing activity during this enrollment period rather than a long-standing, high-volume practice.

From a payer or competitive-intelligence perspective, the combination of very low total Medicare revenue ($3.7K), no Medicaid activity, and a two-code concentration (the top-3 codes account for 100.0% of Medicare revenue) implies limited exposure and a narrow service footprint for this provider; analysts should view this NPI as a small-scale anesthesia services contributor rather than a broad or high-volume competitor.

Medicare: Complete Services Breakdown

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

2 rows

CPT/HCPCS Code	Description	Claims	Avg Paid	Revenue
00811	The provider performs anesthesia services for a patient undergoing an unspecified lower intestinal endoscopic procedure where the surgical provider introduces an endoscope into the intestines up to…	20	$110	$2.3K
00142	The provider performs anesthesia services for a patient undergoing an eye lens procedure.	20	$80	$1.3K

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 2 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. New York Distribution

Mijeung Gwak — 0 of 2 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — New York

Full comparison — all codes billed, vs. state median

2 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
00142	2	1,040	30	$80	$7.1K
00811	2	1,710	30	$90	$4.3K

Related Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Michael Braunstein	NV	Anesthesiology Physician	$115.5K	$187K
Michelle Edwards	NV	Certified Registered Nurse Anesthetist	$117.7K	$10.8K
Yuriy Nikiforov	NV	Critical Care Medicine (Internal Medicine) Physician	$116.3K	$0
Corey Warner	UT	Certified Registered Nurse Anesthetist	$94.4K	$0
Yi Mcwhorter	NV	Anesthesiology Physician	$93.2K	$0
Ovidiu Brescan	NV	Anesthesiology Physician	$19.2K	$60K
Cissie Walker	NV	Certified Registered Nurse Anesthetist	$63.6K	$0
Wassim Madi	NV	Anesthesiology Physician	$48.8K	$7.4K
Elizabeth Magsanoc	NV	Certified Registered Nurse Anesthetist	$50.6K	$0
Scott Boman	NV	Anesthesiology Physician	$42.5K	$0

Nearby Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Montefiore Medical Center	NY	General Acute Care Hospital	$0	$961.7M
Montefiore Medical Center	NY	Anesthesiology Physician	$1.4M	$398.4M
Port Morris Home Care Agency, LLC	NY	Home Health Agency	$0	$95.8M
Jsp Life Agency Inc.	NY	Home Health Agency	$0	$94M
Bronx Jewish Community Council -home Attendant Services Inc	NY	Home Health Agency	$0	$39.2M
Bronx Community Home Care, Inc.	NY	In Home Supportive Care Agency	$0	$26.5M
Bronx Sc LLC	NY	Ambulatory Surgical Clinic/Center	$396.7K	$2.4M
Mahmood Kazmi	NY	Psychiatry Physician	$540.6K	$760.6K
Menachem Gold	NY	Diagnostic Radiology Physician	$207.7K	$852.7K
Aleksandr Morim	NY	Diagnostic Radiology Physician	$801.3K	$62.8K

Mijeung Gwak — Billing Profile & Reimbursement Data

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Mijeung Gwak — 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

Related Providers

Nearby Providers

Frequently Asked Questions

References