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 & MedicaidJoan Chen
    Ask Trek AI about this page

    Joan Chen — Billing Profile & Reimbursement Data

    NPI 1932371713 · Ann Arbor, MI · Gastroenterology Physician

    Customize your policy alerts

    Sign up for Joan Chen — 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.

    Joan Chen is a gastroenterology physician provider located in Ann Arbor, Michigan. This profile covers 10 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 / 7

    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
    OrganizationJoan Chen
    Address1500 East Medical Center Dr
    CityAnn Arbor
    StateMI
    ZIP48109
    TaxonomyGastroenterology Physician
    NPI EnumeratedApril 1, 2008

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

    Payer SourceTotal Paid
    Medicare$21.2K
    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.

    10 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    91010The provider uses a manometer to analyze esophageal muscle pressure and movement in a patient with gastroesophageal reflux disease or GERD. He interprets the findings and prepares a report.100$50$4.6K
    45385The provider examines the colon and rectum using a colonoscope, a long, thin flexible tubular instrument with a light source and camera. He removes one or more tumors, polyps, or other lesions with a…20$220$3.3K
    91037The provider performs gastroesphageal reflux test to determine the backflow of acid from the stomach into the esophagus with nasal catheter intraluminal impedance electrode placement. He records and…60$40$2.3K
    99215The provider sees an established patient for an office visit or other outpatient visit involving evaluation and management. The visit involves a high level of medical decision making, and/or the…20$110$2.1K
    43239The provider inserts a flexible endoscope through the mouth and down into the esophagus, stomach, and duodenum where he removes one or more tissue biopsy specimens for diagnostic analysis.20$90$2K
    99214The provider sees an established patient for an office visit or other outpatient visit involving evaluation and management. The visit involves a moderate level of medical decision making, and/or the…30$70$2K
    99233The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a high level of medical decision making or the…20$100$1.8K
    91038The provider performs gastroesophageal reflux test to determine the backflow of acid from the stomach into the esophagus with a nasal catheter intraluminal impedance electrode placement for more than…40$40$1.6K
    43235The provider inserts an endoscope through the mouth and down into the esophagus, stomach, and duodenum for diagnostic purposes; the provider may collect specimens by brushing or washing.20$90$1.5K
    G0500Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence…10$10$70

    Medicare: Competitive Analysis & Benchmarks

    How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 10 CPT/HCPCS codes.

    View: State1 / 2

    Full comparison — all codes billed, vs. state median

    10 rows

    CPT/HCPCS CodeRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    4538545853040$270$18.3K
    992333,8014,22070$90$12.3K
    9921412,43515,47080$80$11.4K
    4323940251050$110$8.2K
    992153,0724,42030$110$6K
    4323515424020$120$3.3K
    9101011010$50$1.4K
    9103811040$40$1.3K
    9103711020$40$1.1K
    G0500789050$10$500

    Related Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Steven CohenKSOphthalmology Physician$2.4M$0
    Joshua VrabecMIOphthalmology Physician$164.1K$0
    Shinichi FukuharaMIThoracic Surgery (Cardiothoracic Vascular Surgery) Physician$139.8K$0
    Kenneth TobinCACardiovascular Disease Physician$124.8K$0
    Robert KennedyMIClinical Cardiac Electrophysiology Physician$124.1K$0
    Troy LabountyMICardiovascular Disease Physician$120.2K$0
    Annette KretzlerMIRadiation Oncology Physician$114.8K$0
    Anna BooherMICardiovascular Disease Physician$107.8K$0
    Nicklaus SlocumMICardiovascular Disease Physician$106K$0
    Caroline DalyMIDiagnostic Radiology Physician$100.4K$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. Michigan Distribution
    Joan Chen — 2 of 10 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — Michigan