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    OpenPayerNPI Medicare & MedicaidJohn Demay
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    John Demay — Billing Profile & Reimbursement Data

    NPI 1366447294 · Sioux City, IA · Dermatology Physician

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    John Demay is a dermatology physician provider located in Sioux City, Iowa. This profile covers 25 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.

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    Provider details (source: NPPES NPI Registry)

    FieldValue
    Entity TypeIndividual
    OrganizationJohn Demay
    Address2930 Hamilton Blvd
    CitySioux City
    StateIA
    ZIP51104
    TaxonomyDermatology Physician
    NPI EnumeratedJune 16, 2005

    Lifetime revenue by payer source (source: CMS Medicare & Medicaid claims data)

    Payer SourceTotal Paid
    Medicare$826.6K
    Medicaid$0

    Key Findings

    This provider's Medicare footprint is the sole payer activity on file: Total Medicare revenue is $826.6K and there is no Medicaid billing on file, so the practice is effectively single‑payer (Medicare) in the available claims data. The absence of Medicaid billing limits any in‑state payer mix analysis and suggests the provider does not participate in, or is not billing, Medicaid in a way captured by these records.

    Revenue is highly concentrated in a small set of services: the precomputed top 3 Medicare codes account for 76.3% of this provider's total Medicare revenue. Those top three are 77280 (39.2%), G6001 (26.3%), and 99213 (10.8%), indicating most Medicare dollars flow from a narrow procedural/E&M mix and creating exposure if reimbursement or utilization for these specific codes changes.

    The code mix points to a service line centered on radiation therapy planning and guidance with supplemental office E/M work: high revenues for 77280 and G6001 (simulation/imaging and ultrasonic guidance for radiation fields) and additional billed radiation therapy planning codes (e.g., 77401, 77427, 77336) indicate the provider’s Medicare activity is concentrated in radiation treatment planning and delivery workflows, while 99213 captures routine office follow‑up visits. For analysts mapping service lines, this blend looks operationally more like radiation therapy–heavy practice activity than a typical purely procedural dermatology panel.

    Code 77280 is a pronounced national outlier: the provider reports $324.9K from 77280 (39.2% of Medicare revenue) and ranks #46 of 3348 providers nationally, placing them in the 99th percentile and described as an "extreme outlier, far above typical national volume for this code." That ranking signals the provider is a high‑volume national performer for this specific simulation/imaging service relative to peers.

    E/M volume as reflected by 99213 is also unusually large: 1.6K claims generating $89.2K (10.8% of Medicare revenue) place the provider at rank #1883 of 457151 providers nationally and labeled an "extreme outlier, far above typical national volume for this code." This combination of very high procedure (77280) and E/M (99213) volumes suggests substantial patient throughput and recurring visit activity tied to the radiation therapy workflow.

    G6001 (ultrasonic guidance for placement of radiation therapy fields) contributes $218.1K (26.3% of Medicare revenue) and, while high in absolute terms, is characterized as a typical/unremarkable volume relative to its peer group (rank #39 of 280 providers, 86th percentile). In plain terms, G6001 activity is sizeable but occurs within a smaller, specialized national cohort of providers who bill this code, so it reinforces the interpretation of a focused radiation therapy practice rather than standing alone as an outlier.

    The provider has an established billing history, with the NPI enumerated on 2005-06-16 (~21 years ago), indicating long tenure in Medicare billing. Coupled with the concentrated code mix and outsized rankings on key codes, this longevity suggests the current high-volume service patterns are sustained and not a short‑term anomaly.

    Because there is no Medicaid billing on file, competitive assessments at the state Medicaid level cannot be performed; analysts should treat the provider as effectively Medicare‑centric for contracting and network analyses. The combination of national outlier status on key Medicare codes and zero Medicaid claims implies the provider's competitive positioning is most meaningfully evaluated against national Medicare peers, not state Medicaid peers.

    Medicare: Total Revenue Breakdown by CPT/HCPCS Code

    Medicare revenue breakdown by CPT/HCPCS procedure code.

    View: Bar Chart1 / 2

    Medicare: Complete Services Breakdown

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

    25 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    77280The provider uses a simulator or other imaging modality to determine the size and location of ports to be used for radiation therapy. This code describes a simple level service.1,670$200$324.9K
    G6001Ultrasonic guidance for placement of radiation therapy fields1,670$130$218.1K
    99213The provider sees an established patient for an office visit or other outpatient visit involving evaluation and management. The visit involves a low level of medical decision making, and/or the…1,570$60$89.2K
    77401Deleted effective Jan. 1, 2026.1,620$30$48.5K
    77427Radiation therapy utilizes ionizing radiation beams that are directed at cancerous cells in order to destroy them. The radiation, damages the DNA (the genetic material) in the cell, thus preventing…320$140$44.9K
    17000The provider destroys a premalignant lesion using techniques such as chemosurgery, cryosurgery, electrosurgery, or others. This code reports the destruction of the first or only lesion.590$40$24.9K
    11102The provider biopsies a single skin lesion using a tangential (side–ways) approach; he shaves off the lesion or scoops it out with a knife or curette.190$70$12.8K
    77336This code is for reporting ongoing medical physics consultation. When a patient is undergoing radiation treatment for a particular span of time with a number of therapy sessions every week, the…200$60$12.2K
    99212The provider sees an established patient for an office visit or other outpatient visit involving evaluation and management. The visit involves a straightforward level of medical decision making,…230$40$8.6K
    17003In this add–on procedure, the provider destroys a premalignant lesion using techniques such as chemosurgery, cryosurgery, electrosurgery, or others. This code is appropriate for the second through…1,560$10$7.8K

    Showing 1–10 of 25

    Medicare: Competitive Analysis & Benchmarks

    How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 25 CPT/HCPCS codes.

    View: State1 / 2

    Full comparison — all codes billed, vs. state median

    25 rows

    CPT/HCPCS CodeRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    G60012104,770$130$623.7K
    774012104,370$30$128.9K
    7728024050$170$49.8K
    77427940220$140$34.6K
    77336310200$60$19.1K
    7728521040$320$12.7K
    1711016620090$60$9.2K
    773003840300$30$8.7K
    17004769040$100$8.3K
    99213104,740100$50$8K

    Showing 1–10 of 25

    Related Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    David GroteIAMedical Physician Assistant$84.1K$0

    Nearby Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Northwest Iowa Hospital CorporationIAGeneral Acute Care Hospital$0$22.8M
    Northwest Iowa Hospital CorporationIAEmergency Medical Services (Emergency Medicine) Physician$0$7.9M
    Simple Life, Inc.IACommunity/Behavioral Health Agency$0$5.1M
    Unitypoint At HomeIADurable Medical Equipment & Medical Supplies$0$5M
    Opportunities UnlimitedIAChild Mental Illness Respite Care$0$2.8M
    Anesthesia Consultants PCIAAnesthesiology Physician$0$1.9M
    Siouxland Dental HealthIADentist$0$1.8M
    Pierce Street Same Day Surgery, LcIAAmbulatory Surgical Clinic/Center$633.9K$1.1M
    Siouxland Medical Education Foundation, IncIAFamily Medicine Physician$0$1.3M
    Siouxland Hospitalists PLLCIAInternal Medicine Physician$0$1.1M

    Frequently Asked Questions

    References

    1. 1.Medicare Physician & Other Practitioner by Provider and Service. CMS.gov.Provider-level Medicare Part B utilization and payment data.
    2. 2.NPPES NPI Registry. CMS.gov.National Provider Identifier registry used for provider enumeration and taxonomy metadata.

    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

    Medicare Revenue by CPT/HCPCS Code
    Claims Volume vs. Iowa Distribution
    John Demay — 3 of 25 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — Iowa