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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.
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Methodology•Download Data
  1. Home
  2. Providers
  3. Monica Lo
⚕️
MDIndividual

Monica Lo, MD

NPI: 1578772604
Little Rock, AR
10 years of data
Clinical Cardiac Electrophysiology
$3.7M
Total Payments
52.8K
Beneficiaries
66.8K
Services
3.7x
Markup Ratio

Peer Comparison

97th
percentile in specialty
This provider$3.7M
Specialty median$207.8K

📋 Key Findings

1Billed $3.7M over 10 years
23.7x markup ratio (above median)
397th percentile in Clinical Cardiac Electrophysiology by payments
4Payments surged 62% in 2015
58 procedures with >3x markup
✓ No flags detected

🔎 Data Analysis

This provider's $3.7M in total Medicare payments ranks in the 97th percentile of Clinical Cardiac Electrophysiology providers nationally.

Medicare payments to this provider grew 115% 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 62% in 2015

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$326.55$119.012.74x$207.54$183.4K2.5K1.8K
2015$362.57$128.662.82x$233.91$296.8K4.0K3.1K
2016$355.23$120.802.94x$234.43$371.8K5.9K4.6K
2017$341.41$118.752.88x$222.66$394.5K7.2K5.4K
2018$313.47$98.173.19x$215.30$376.9K7.5K6.0K
2019$310.89$89.693.47x$221.20$362.6K7.6K6.0K
2020$370.54$110.413.36x$260.13$382.9K7.6K6.1K
2021$394.08$116.423.38x$277.66$495.4K9.1K7.6K
2022$428.43$102.704.17x$325.73$407.5K7.5K6.4K
2023$666.64$112.385.93x$554.26$394.9K8.1K6.0K

Top Procedures (20)

93656Evaluation and insertion of catheters for recording, pacing, and treatment of abnormal heart rhythm
$855.9K
1.1K services$793.28/svc2.71x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$298.6K
4.8K services$62.16/svc2.33x markup
93613Insertion of catheters for 3D mapping of electrical impulses to heart muscles
$271.8K
1.1K services$250.93/svc2.54x markup
33208Insertion of new or replacement of permanent pacemaker including upper and lower chamber electrodes
$212.2K
566 services$374.88/svc2.89x markup
93653Evaluation and insertion of catheters for creation of complete heart block
$167.5K
276 services$607.01/svc1.73x markup
93620Insertion of catheters for recording, pacing, and attempted induction of abnormal rhythm in right upper and lower heart⚠ 3.0x markup
$123.9K
276 services$449.09/svc3.03x markup
93312Insertion of probe in esophagus for heart ultrasound examination including interpretation and report⚠ 4.8x markup
$115.9K
1.4K services$83.07/svc4.84x markup
99213Established patient office or other outpatient visit, typically 15 minutes
$115.9K
3.2K services$36.03/svc2.64x markup
93294Remote evaluations of single, dual, or multiple lead pacemaker with physician analysis, review, and report up to 90 days⚠ 3.0x markup
$112.0K
5.3K services$21.16/svc3.03x markup
33249Insertion or replacement of single or dual chamber pacing defibrillator leads
$111.0K
167 services$664.51/svc2.88x markup
33340Repair of left upper heart
$102.8K
211 services$487.00/svc1.95x markup
93662Ultrasound evaluation of heart blood vessel
$88.3K
862 services$102.38/svc2.59x markup
92960External shock to heart to regulate heart beat⚠ 4.5x markup
$76.2K
941 services$80.97/svc4.50x markup
99204New patient office or other outpatient visit, typically 45 minutes
$68.0K
718 services$94.66/svc2.20x markup
83880Natriuretic peptide (heart and blood vessel protein) level⚠ 7.7x markup
$66.0K
1.6K services$40.38/svc7.69x markup
93280Evaluation, testing, and programming adjustment of permanent dual lead pacemaker system with physician analysis, review, and report
$53.9K
2.0K services$26.58/svc2.89x markup
93295Remote evaluations of single, dual, or multiple lead cardioverter-defibrillator with physician analysis, review, and report up to 90 days⚠ 4.0x markup
$52.5K
1.7K services$31.31/svc3.99x markup
93314Interpretation and report of heart ultrasound examination using esophageal probe⚠ 7.5x markup
$51.8K
781 services$66.32/svc7.54x markup
93010Routine electrocardiogram (EKG) using at least 12 leads with interpretation and report⚠ 3.9x markup
$46.8K
7.8K services$5.98/svc3.85x markup
93655Insertion of catheters for treatment of abnormal heart rhythm
$42.6K
156 services$272.97/svc1.93x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
93656Evaluation and insertion of catheters for recording, pacing, and treatment of abnormal heart rhythm1.1K$855.9K$793.282.71x
99214Established patient office or other outpatient, visit typically 25 minutes4.8K$298.6K$62.162.33x
93613Insertion of catheters for 3D mapping of electrical impulses to heart muscles1.1K$271.8K$250.932.54x
33208Insertion of new or replacement of permanent pacemaker including upper and lower chamber electrodes566$212.2K$374.882.89x
93653Evaluation and insertion of catheters for creation of complete heart block276$167.5K$607.011.73x
93620Insertion of catheters for recording, pacing, and attempted induction of abnormal rhythm in right upper and lower heart276$123.9K$449.093.03x
93312Insertion of probe in esophagus for heart ultrasound examination including interpretation and report1.4K$115.9K$83.074.84x
99213Established patient office or other outpatient visit, typically 15 minutes3.2K$115.9K$36.032.64x
93294Remote evaluations of single, dual, or multiple lead pacemaker with physician analysis, review, and report up to 90 days5.3K$112.0K$21.163.03x
33249Insertion or replacement of single or dual chamber pacing defibrillator leads167$111.0K$664.512.88x
33340Repair of left upper heart211$102.8K$487.001.95x
93662Ultrasound evaluation of heart blood vessel862$88.3K$102.382.59x
92960External shock to heart to regulate heart beat941$76.2K$80.974.50x
99204New patient office or other outpatient visit, typically 45 minutes718$68.0K$94.662.20x
83880Natriuretic peptide (heart and blood vessel protein) level1.6K$66.0K$40.387.69x
93280Evaluation, testing, and programming adjustment of permanent dual lead pacemaker system with physician analysis, review, and report2.0K$53.9K$26.582.89x
93295Remote evaluations of single, dual, or multiple lead cardioverter-defibrillator with physician analysis, review, and report up to 90 days1.7K$52.5K$31.313.99x
93314Interpretation and report of heart ultrasound examination using esophageal probe781$51.8K$66.327.54x
93010Routine electrocardiogram (EKG) using at least 12 leads with interpretation and report7.8K$46.8K$5.983.85x
93655Insertion of catheters for treatment of abnormal heart rhythm156$42.6K$272.971.93x

Markup Analysis

Charge-to-Payment Ratio

3.7x

This provider submits charges 3.7 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.7x means for every $100 Medicare pays, this provider initially charges $370. This is higher than the national average.

Location

Little Rock, AR

Provider Verification

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

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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.

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