Loading...

    Explore
    • Policy Monitoring
    • Live Policy Feed
    • Billing Codes
    • NPI Medicare & Medicaid
    • Healthcare Providers
    • Health Insurance Payers
    • States
    • Service Lines
    • Taxonomy Codes
    Lookup tools
    • Billing Code Lookup
    • CPT Modifier Lookup
    • Provider Taxonomy Code Lookup
    • Healthcare Provider & Facility Lookup
    • Health Insurance Payer Lookup
    • Payer Contact Directory

    Policy & Benchmark Tools

    • Prior Authorization Lookup
    • Coverage Criteria Lookup
    • Timely Filing Lookup
    • Billing Code Reimbursement Rates
    • Payer Comparison Dashboard
    • Facility Comparison Dashboard
    • All tools

    Company

    • About OpenPayer
    • Data Sources
    • Trek Health
    OpenPayerby Trek Health
    LinkedInYouTube

    © 2026 Trek Health. All rights reserved.

    OpenPayer is built and maintained by Trek Health.

    v1.0.28
    OpenPayerNPI Medicare & MedicaidMai Gu
    Ask Trek AI about this page

    Mai Gu — Billing Profile & Reimbursement Data

    NPI 1821048257 · Corona, CA · Anatomic Pathology & Clinical Pathology Physician

    Customize your policy alerts

    Sign up for Mai Gu — Billing Profile & Reimbursement Data policy alerts

    Get alerted when relevant policies change without checking for updates manually.

    Monitor payer policy activity

    Receive email alerts as soon as relevant payer policies are published or updated.

    Mai Gu is a anatomic pathology & clinical pathology physician provider located in Corona, California. This profile covers 9 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.

    Table of contents

    Progress1 / 8

    Explore openpayer tools

    • Billing CodesCPT, HCPCS, DRG & more
    • Reimbursement RatesCommercial vs. Medicare rate reports
    • ProvidersHospitals & facilities
    • PayersPlans & market footprint
    • Taxonomy CodesNUCC specialty codes
    • ModifiersCPT modifiers & usage
    • Prior AuthorizationPA policies by payer & drug
    • Timely FilingFiling deadlines by payer
    • Coverage CriteriaMedical necessity by payer
    • Payer ContactsClaims, PA & appeals contacts
    View all tools

    Provider details (source: NPPES NPI Registry)

    FieldValue
    Entity TypeIndividual
    OrganizationMai Gu
    Address1810 Fullerton Ave Ste 102
    CityCorona
    StateCA
    ZIP92881
    TaxonomyAnatomic Pathology & Clinical Pathology Physician
    NPI EnumeratedMay 10, 2006

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

    Payer SourceTotal Paid
    Medicare$149.3K
    Medicaid$0

    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.

    9 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    88173The lab analyst performs the technical lab test to analyze a cytopathology specimen from a fine needle aspirate and then interprets and reports the results.440$130$59.1K
    10005Under ultrasound guidance, the provider performs a fine needle aspiration (FNA), a diagnostic procedure that involves collecting a specimen from tissue, a cyst, or mass using a specialized needle and…280$110$30.5K
    88172The lab analyst performs the technical lab test to analyze a cytopathology specimen from a fine needle aspirate immediately after aspiration to determine whether a sample satisfactory for diagnosis…440$50$20.3K
    99203The provider sees a new 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 provider…240$80$20.3K
    10006The provider performs a fine needle aspiration (FNA), a diagnostic procedure that involves collecting a specimen from tissue, a cyst, or mass using a specialized needle and syringe. Report this code…170$50$8.1K
    88341The lab analyst applies an additional single antibody stain on a slide or slides prepared from the same patient specimen as the initial antibody stain, such as tumor tissue. Then a qualified…70$70$5.3K
    88305The physician, typically a pathologist, performs a level IV examination of a surgical pathology specimen. The examination includes accessioning the specimen into the lab, which involves formally…40$60$2.6K
    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…40$70$2.3K
    88342The lab analyst applies an initial single antibody stain on a slide or slides prepared from a single patient specimen, such as tumor tissue. Then a qualified provider, typically a pathologist,…10$80$1.1K

    Medicare: Competitive Analysis & Benchmarks

    How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 9 CPT/HCPCS codes.

    View: State1 / 2

    Full comparison — all codes billed, vs. state median

    9 rows

    CPT/HCPCS CodeRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    883051,4241,580450$40$51.3K
    88341827920260$40$15.7K
    9921325,42934,66080$70$13.2K
    883429911,000120$50$11.2K
    88173635050$90$9.7K
    9920334812,74030$80$4.6K
    10005231020$90$2.9K
    88172118030$30$1.8K
    1000613020$50$1.5K

    Related Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Harbinder BrarCAMaternal & Fetal Medicine Physician$0$31.3M
    Kevin O'reillyCAPodiatrist$513.7K$4.7M
    Homayoun TabandehCAOphthalmology Physician$5.1M$6.8K
    Nikhil PatelCAVascular & Interventional Radiology Physician$4.3M$0
    Regents Of The University Of CaliforniaCAAnatomic Pathology & Clinical Pathology Physician$502.7K$3.2M
    Clement ChanCARetina Specialist (Ophthalmology) Physician$2.9M$0
    Daniel EsmailiCAOphthalmology Physician$2.7M$2.2K
    Roger KornuCARheumatology Physician$2.7M$0
    Brian KimCAOphthalmology Physician$2.6M$8.9K
    Steven LinCARetina Specialist (Ophthalmology) Physician$2.5M$0

    Nearby Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Sequoia Health Ipa IncCAHealth Maintenance Organization$0$43.6M
    Qais AyoubyCAInternal Medicine Physician$4M$780
    Omar SalehCAVascular & Interventional Radiology Physician$436K$630
    Karnadi DoeveCACertified Registered Nurse Anesthetist$25.4K$0

    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. California Distribution
    Mai Gu — 5 of 9 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — California