OpenMedicare
Start Here
Explore
Fraud
Investigations
Data
Tools
About

Footer

OpenMedicare

Independent Medicare data journalism

Sister Sites

  • OpenMedicaid
  • OpenFeds
  • OpenSpending

Explore

  • Providers
  • Procedures
  • States
  • Specialties
  • Search

Fraud Analysis

  • Still Out There (AI)
  • Fraud Overview
  • Fraud Watchlist
  • Deep Dive Profiles
  • Impossible Numbers
  • Report Fraud

Investigations

  • The Algorithm Knows
  • How We Built the Model
  • Internal Medicine Crisis
  • Florida & California Fraud
  • Million Dollar Flagged
  • All Investigations

Tools

  • Provider Lookup
  • Compare
  • Cost Calculator
  • Your Medicare Dollar
  • Downloads

About

  • About OpenMedicare
  • Methodology
  • Glossary
  • Data Sources
  • API Docs
  • Updates
Data Sources: Centers for Medicare & Medicaid Services (CMS), Medicare Provider Utilization and Payment Data
Disclaimer: This site is an independent journalism project. Data analysis and editorial content are not affiliated with or endorsed by CMS or any government agency. All spending figures are based on publicly available Medicare payment records.
Sister Sites: OpenMedicaid · OpenFeds · OpenSpending

© 2026 OpenMedicare. Independent data journalism. Built by TheDataProject.ai

Methodology•Download Data
  1. Home
  2. Providers
  3. Rachel Chase
⚕️
MDIndividual

Rachel Chase, MD

NPI: 1518052893
Lexington, KY
10 years of data
Rheumatology
$30.2M
Total Payments
229
Beneficiaries
1.8M
Services
1.61x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$30.2M
Specialty median$352.6K

📋 Key Findings

1Billed $30.2M over 10 years
21.61x markup ratio
399th percentile in Rheumatology by payments
4725 services/day — physically implausible
5Payments surged 56% in 2023
62 procedures with >3x markup

⚠️ This provider averages 725 services per working day — physically unusual for an individual practitioner

Based on 1.8M total services over 10 years (250 working days/year). Learn about impossible service volumes →

🔎 Data Analysis

This provider's $30.2M in total Medicare payments ranks in the 99th percentile of Rheumatology providers nationally.

Averaging 725 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 225% from 2014 to 2023.

AI-generated analysis based on Medicare payment data.

Annual Medicare Payments

Annual Services Provided

Avg Payment per Service

Markup Ratio Over Time

📈

Notable: Payments increased 56% in 2023

Year-over-year payment surges can indicate changes in practice volume, new services, or billing pattern shifts.

Submitted Charges vs. Medicare Payments

Average per-service amounts submitted by the provider compared to what Medicare actually paid — the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$25.65$15.211.69x$10.44$1.5M97.8K19
2015$41.68$24.111.73x$17.57$2.3M94.2K22
2016$36.69$21.471.71x$15.22$2.5M117.6K23
2017$33.84$20.631.64x$13.21$2.9M141.2K24
2018$36.24$22.071.64x$14.17$3.1M140.1K24
2019$34.56$20.791.66x$13.77$3.0M144.7K20
2020$28.98$17.851.62x$11.13$3.8M213.5K24
2021$26.27$16.161.63x$10.11$3.2M195.2K24
2022$19.43$12.111.60x$7.32$3.1M256.3K25
2023$16.14$11.701.38x$4.44$4.8M412.9K24

Top Procedures (20)

J1745Injection, infliximab, excludes biosimilar, 10 mg
$10.9M
214.7K services$50.75/svc1.70x markup
J0129Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)
$6.4M
176.1K services$36.09/svc1.42x markup
J0717Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)
$3.7M
737.2K services$5.08/svc1.44x markup
J1602Injection, golimumab, 1 mg, for intravenous use
$1.5M
116.3K services$12.91/svc1.59x markup
J3262Injection, tocilizumab, 1 mg
$1.5M
413.4K services$3.58/svc1.51x markup
Q5104Injection, infliximab-abda, biosimilar, (renflexis), 10 mg
$1.3M
39.8K services$33.06/svc1.45x markup
J9312Injection, rituximab, 10 mg
$967.5K
14.2K services$68.01/svc1.53x markup
J9310Injection, rituximab, 100 mg
$903.4K
1.4K services$624.35/svc1.48x markup
J0897Injection, denosumab, 1 mg
$672.7K
44.4K services$15.15/svc1.46x markup
96413Administration of chemotherapy into vein, 1 hour or less⚠ 3.1x markup
$633.8K
6.6K services$95.87/svc3.09x markup
99214Established patient office or other outpatient visit, 30-39 minutes
$510.0K
6.7K services$75.63/svc1.70x markup
Q5119Injection, rituximab-pvvr, biosimilar, (ruxience), 10 mg
$188.3K
7.7K services$24.55/svc1.41x markup
99215Established patient office or other outpatient visit, 40-54 minutes
$151.9K
1.2K services$122.78/svc1.58x markup
Q5115Injection, rituximab-abbs, biosimilar, (truxima), 10 mg
$130.1K
2.3K services$57.82/svc1.72x markup
96365Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
$126.9K
2.5K services$50.28/svc1.79x markup
99213Established patient office or other outpatient visit, 20-29 minutes
$125.4K
2.5K services$50.25/svc1.71x markup
96415Administration of chemotherapy into vein, each additional hour⚠ 3.2x markup
$118.6K
5.6K services$21.12/svc3.22x markup
99204New patient office or other outpatient visit, 45-59 minutes
$115.1K
1.0K services$113.00/svc1.69x markup
96401Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle
$64.2K
1.2K services$52.09/svc1.68x markup
96372Injection of drug or substance under skin or into muscle
$39.7K
3.2K services$12.33/svc2.27x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J1745Injection, infliximab, excludes biosimilar, 10 mg214.7K$10.9M$50.751.70x
J0129Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)176.1K$6.4M$36.091.42x
J0717Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)737.2K$3.7M$5.081.44x
J1602Injection, golimumab, 1 mg, for intravenous use116.3K$1.5M$12.911.59x
J3262Injection, tocilizumab, 1 mg413.4K$1.5M$3.581.51x
Q5104Injection, infliximab-abda, biosimilar, (renflexis), 10 mg39.8K$1.3M$33.061.45x
J9312Injection, rituximab, 10 mg14.2K$967.5K$68.011.53x
J9310Injection, rituximab, 100 mg1.4K$903.4K$624.351.48x
J0897Injection, denosumab, 1 mg44.4K$672.7K$15.151.46x
96413Administration of chemotherapy into vein, 1 hour or less6.6K$633.8K$95.873.09x
99214Established patient office or other outpatient visit, 30-39 minutes6.7K$510.0K$75.631.70x
Q5119Injection, rituximab-pvvr, biosimilar, (ruxience), 10 mg7.7K$188.3K$24.551.41x
99215Established patient office or other outpatient visit, 40-54 minutes1.2K$151.9K$122.781.58x
Q5115Injection, rituximab-abbs, biosimilar, (truxima), 10 mg2.3K$130.1K$57.821.72x
96365Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less2.5K$126.9K$50.281.79x
99213Established patient office or other outpatient visit, 20-29 minutes2.5K$125.4K$50.251.71x
96415Administration of chemotherapy into vein, each additional hour5.6K$118.6K$21.123.22x
99204New patient office or other outpatient visit, 45-59 minutes1.0K$115.1K$113.001.69x
96401Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle1.2K$64.2K$52.091.68x
96372Injection of drug or substance under skin or into muscle3.2K$39.7K$12.332.27x

Markup Analysis

Charge-to-Payment Ratio

1.61x

This provider submits charges 1.61 times higher than what Medicare actually pays.

What This Means

A markup ratio of 1.61x means for every $100 Medicare pays, this provider initially charges $161. This is lower than the national average.

Location

Lexington, KY

Provider Verification

Always verify provider credentials and location before scheduling appointments. This data reflects Medicare payments and may not include all practice locations.

Similar Providers

Other Rheumatology providers in KY for peer comparison.

Rachel Chase (you)
$30.2M
Gary Crump, M.D.
$33.4M
Show detailed table ▾
ProviderLocationTotal PaymentsStatus
Gary Crump, M.D.Louisville, KY$33.4M✓ Clear

Related

Browse
← Back to Provider Directory
State
All providers in KY →
Specialty
All Rheumatology providers →
Tool
Compare this provider →
Analysis
Fraud Watchlist →
Search
Search all providers →

Share This Provider

Share this provider's Medicare payment information

Share:

Data Sources

  • • Centers for Medicare & Medicaid Services (CMS)
  • • Medicare Provider Utilization and Payment Data (2014-2023)
  • • National Plan and Provider Enumeration System (NPPES)

Last Updated: February 2026 (data through 2023, the latest CMS release)

Note: All data is from publicly available Medicare records. OpenMedicare is an independent journalism project not affiliated with CMS.

Believe this data is inaccurate? Dispute this data