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 & MedicaidErin Chamberlain
    Ask Trek AI about this page

    Erin Chamberlain — Billing Profile & Reimbursement Data

    NPI 1902249469 · San Luis Obispo, CA · Hematology & Oncology Physician

    Customize your policy alerts

    Sign up for Erin Chamberlain — 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.

    Erin Chamberlain is a hematology & oncology physician provider located in San Luis Obispo, California. This profile covers 51 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
    OrganizationErin Chamberlain
    Address892 Aerovista Pl Ste 240
    CitySan Luis Obispo
    StateCA
    ZIP93401
    TaxonomyHematology & Oncology Physician
    NPI EnumeratedApril 15, 2013

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

    Payer SourceTotal Paid
    Medicare$1.9M
    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.

    51 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    J9271Injection, pembrolizumab, 1 mg23,600$40$1M
    J9144Injection, daratumumab, 10 mg and hyaluronidase‑fihj5,580$40$212K
    J0897Injection, denosumab, 1 mg8,400$20$151.2K
    J2506Injection, pegfilgrastim, excludes biosimilar, 0.5 mg1,330$80$105.4K
    96413Chemotherapy is a therapeutic procedure used for the treatment of cancer via the use of chemical agents. These chemical agents (drugs) work on the cancerous cells of the body to destroy them. These…700$110$78.5K
    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…620$100$62.7K
    Q5118Injection, bevacizumab-bvzr, biosimilar, (zirabev), 10 mg1,890$20$43.5K
    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…290$140$41.8K
    Q5119Injection, rituximab-pvvr, biosimilar, (ruxience), 10 mg1,780$20$40.9K
    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…310$70$20.6K

    Showing 1–10 of 51

    Medicare: Competitive Analysis & Benchmarks

    How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 51 CPT/HCPCS codes.

    View: State1 / 2

    Full comparison — all codes billed, vs. state median

    51 rows

    CPT/HCPCS CodeRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    J92712014013,100$40$653.5K
    J9144314013,860$40$631.4K
    Q511812105,810$20$122.5K
    J08971631,0303,060$20$91.4K
    J0881718019,020$1$80.6K
    Q511920301,940$20$66.6K
    J2506170500$80$43.2K
    9641320620170$120$26.9K
    9923311,14811,530120$100$26.2K
    992143,80337,970120$90$23.2K

    Showing 1–10 of 51

    Related Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Regents Univ Of Calif Los AngelesCAGeneral Acute Care Hospital$0$41.5M
    The Regents Of The University Of CaliforniaCAInternal Medicine Physician$0$35.9M
    Allen HuMDOphthalmology Physician$8.9M$32.5K
    Sujit IttyAZOphthalmology Physician$6.2M$11.3K
    Steven NewmanFLMedical Oncology Physician$5.7M$0
    Brian DicarloCAHematology & Oncology Physician$4.7M$0
    Roger GoldbergCARetina Specialist (Ophthalmology) Physician$4.6M$0
    David CuppCARetina Specialist (Ophthalmology) Physician$3.8M$0
    Daniel GreenwaldCAMedical Oncology Physician$3.5M$0
    Samuel SlomowitzCAHematology & Oncology Physician$3.4M$0

    Nearby Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    County Of San Luis ObispoCACommunity/Behavioral Health Agency$0$66.8M
    Pacific Point Laboratories, Inc.CAClinical Medical Laboratory$8.5M$38.8M
    Community Health Centers Of The Central Coast IncCAFederally Qualified Health Center (FQHC)$0$25.3M
    San Luis Ambulance Service, Inc.CALand Ambulance$4.3M$7.8M
    San Luis Obispo Surgery Center A California Limited PartnershipCAAmbulatory Surgical Clinic/Center$2.9M$0
    Daniel AgarwalCAOphthalmology Physician$2.3M$0
    California Medical Surgery Center LLCCAAmbulatory Surgical Clinic/Center$1.7M$0
    Steven JohnsonCAOphthalmology Physician$1.5M$0
    Abroms Dougherty Vision Asc LLCCAAmbulatory Surgical Clinic/Center$972.6K$0
    John SiebenlistCAProcedural Dermatology Physician$837.8K$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
    Erin Chamberlain — 4 of 25 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — California