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 ยท OpenFeds ยท OpenSpending

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

Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. Michael Nolen
๐Ÿ”ช
MDIndividual

Michael Nolen, M.D.

NPI: 1164515318
Little Rock, AR
10 years of data
Cardiac Surgery
$3.8M
Total Payments
9.4K
Beneficiaries
9.6K
Services
3.48x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$3.8M
Specialty median$102.2K

๐Ÿ“‹ Key Findings

1Billed $3.8M over 10 years
23.48x markup ratio (above median)
399th percentile in Cardiac Surgery by payments
410 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $3.8M in total Medicare payments ranks in the 99th percentile of Cardiac Surgery providers nationally.

This provider's billing patterns fall within normal ranges for their specialty.

AI-generated analysis based on Medicare payment data.

Annual Medicare Payments

Annual Services Provided

Avg Payment per Service

Markup Ratio Over Time

Submitted Charges vs. Medicare Payments

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

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$1.5K$432.463.39x$1.0K$354.6K1.0K1.0K
2015$1.6K$363.474.39x$1.2K$402.0K1.2K1.1K
2016$2.0K$531.503.78x$1.5K$468.4K1.2K1.1K
2017$1.7K$396.154.27x$1.3K$437.2K1.2K1.2K
2018$1.8K$484.783.76x$1.3K$487.2K1.3K1.3K
2019$1.7K$538.603.24x$1.2K$452.4K1.1K1.0K
2020$1.6K$543.973.00x$1.1K$256.0K641625
2021$1.3K$459.392.90x$875.00$255.7K616606
2022$1.5K$490.183.10x$1.0K$322.4K774760
2023$1.8K$615.182.96x$1.2K$340.2K692687

Top Procedures (20)

33533Heart artery bypass to repair one arteryโš  3.6x markup
$1.2M
1.3K services$960.10/svc3.60x markup
33405Replacement of left lower heart chamber valve using artificial valve on heart-lung machineโš  3.7x markup
$485.7K
437 services$1.1K/svc3.73x markup
35301Removal of blood clot and portion of artery of neck
$427.4K
529 services$808.00/svc2.41x markup
33430Replacement of valve between left upper and lower chambers on heart-lung machineโš  3.2x markup
$288.2K
183 services$1.6K/svc3.18x markup
33519Combined multiple vein and artery heart artery bypasses
$196.3K
616 services$318.67/svc2.92x markup
33426Insertion of artificial valve between left heart chambers on heart-lung machine
$160.4K
107 services$1.5K/svc2.97x markup
33361Replacement of aortic valve with prosthetic valve, accessed through the skinโš  4.4x markup
$128.5K
226 services$568.42/svc4.40x markup
33518Combined multiple vein and artery heart artery bypassesโš  3.5x markup
$105.9K
519 services$204.11/svc3.45x markup
33512Heart artery bypass to repair multiple arteriesโš  4.3x markup
$95.5K
95 services$1.0K/svc4.25x markup
33257Destruction and reconstruction of right upper heart
$84.2K
229 services$367.75/svc2.80x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$80.5K
1.3K services$61.23/svc2.25x markup
33534Heart artery bypass to repair multiple arteriesโš  8.4x markup
$74.8K
153 services$489.16/svc8.45x markup
33860Placement of graft to aorta on heart-lung machine
$65.8K
35 services$1.9K/svc2.95x markup
33511Heart artery bypass to repair multiple arteriesโš  6.2x markup
$48.0K
75 services$639.41/svc6.20x markup
33530Reoperation of heart artery bypass or valve procedure more than 1 month after original operationโš  4.1x markup
$37.5K
163 services$229.92/svc4.14x markup
99213Established patient office or other outpatient visit, typically 15 minutes
$34.9K
935 services$37.29/svc2.46x markup
33521Combined multiple vein and artery heart artery bypassesโš  3.2x markup
$34.8K
98 services$354.75/svc3.21x markup
35820Exploration of chest for postsurgical bleeding, blood clot, or infection
$27.5K
24 services$1.1K/svc2.82x markup
33411Replacement and enlargement of left lower heart valve
$27.3K
11 services$2.5K/svc2.49x markup
35656Bypass of diseased or blocked artery (upper leg to lower thigh artery)
$24.4K
32 services$762.22/svc2.67x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
33533Heart artery bypass to repair one artery1.3K$1.2M$960.103.60x
33405Replacement of left lower heart chamber valve using artificial valve on heart-lung machine437$485.7K$1.1K3.73x
35301Removal of blood clot and portion of artery of neck529$427.4K$808.002.41x
33430Replacement of valve between left upper and lower chambers on heart-lung machine183$288.2K$1.6K3.18x
33519Combined multiple vein and artery heart artery bypasses616$196.3K$318.672.92x
33426Insertion of artificial valve between left heart chambers on heart-lung machine107$160.4K$1.5K2.97x
33361Replacement of aortic valve with prosthetic valve, accessed through the skin226$128.5K$568.424.40x
33518Combined multiple vein and artery heart artery bypasses519$105.9K$204.113.45x
33512Heart artery bypass to repair multiple arteries95$95.5K$1.0K4.25x
33257Destruction and reconstruction of right upper heart229$84.2K$367.752.80x
99214Established patient office or other outpatient, visit typically 25 minutes1.3K$80.5K$61.232.25x
33534Heart artery bypass to repair multiple arteries153$74.8K$489.168.45x
33860Placement of graft to aorta on heart-lung machine35$65.8K$1.9K2.95x
33511Heart artery bypass to repair multiple arteries75$48.0K$639.416.20x
33530Reoperation of heart artery bypass or valve procedure more than 1 month after original operation163$37.5K$229.924.14x
99213Established patient office or other outpatient visit, typically 15 minutes935$34.9K$37.292.46x
33521Combined multiple vein and artery heart artery bypasses98$34.8K$354.753.21x
35820Exploration of chest for postsurgical bleeding, blood clot, or infection24$27.5K$1.1K2.82x
33411Replacement and enlargement of left lower heart valve11$27.3K$2.5K2.49x
35656Bypass of diseased or blocked artery (upper leg to lower thigh artery)32$24.4K$762.222.67x

Markup Analysis

Charge-to-Payment Ratio

3.48x

This provider submits charges 3.48 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.48x means for every $100 Medicare pays, this provider initially charges $348. 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.

Related

Browse
โ† Back to Provider Directory
State
All providers in AR โ†’
Specialty
All Cardiac Surgery providers โ†’
Tool
Compare this provider โ†’
Analysis
Fraud Watchlist โ†’
Search
Search all providers โ†’

Share This Provider

Share this provider's Medicare payment information

Share:

Data Sources

  • โ€ข Centers for Medicare & Medicaid Services (CMS)
  • โ€ข Medicare Provider Utilization and Payment Data (2014-2023)
  • โ€ข 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