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. Anna Kagan
⚕️
MDIndividual

Anna Kagan, MD

NPI: 1689822579
Houston, TX
10 years of data
Nephrology
$4.2M
Total Payments
17.4K
Beneficiaries
52.1K
Services
2.13x
Markup Ratio

Peer Comparison

98th
percentile in specialty
This provider$4.2M
Specialty median$185.2K

📋 Key Findings

1Billed $4.2M over 10 years
22.13x markup ratio (above median)
398th percentile in Nephrology by payments
✓ No flags detected

🔎 Data Analysis

This provider's $4.2M in total Medicare payments ranks in the 98th percentile of Nephrology providers nationally.

Medicare payments to this provider grew 113% 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

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$221.29$100.142.21x$121.15$253.6K3.5K1.5K
2015$278.37$105.102.65x$173.27$265.7K3.5K1.5K
2016$285.39$111.532.56x$173.86$323.2K4.2K1.5K
2017$263.91$99.192.66x$164.72$445.2K6.2K2.0K
2018$148.64$101.291.47x$47.35$459.1K6.4K2.0K
2019$155.15$109.571.42x$45.58$427.6K5.5K1.8K
2020$134.13$99.091.35x$35.04$442.8K5.4K1.7K
2021$230.46$113.252.03x$117.21$486.3K5.4K1.8K
2022$292.13$108.602.69x$183.53$560.2K6.3K1.8K
2023$343.76$126.892.71x$216.87$541.3K5.7K1.6K

Top Procedures (20)

99232Subsequent hospital inpatient care, typically 25 minutes per day
$1.2M
21.0K services$58.35/svc2.03x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$757.7K
9.0K services$84.46/svc2.26x markup
99233Subsequent hospital inpatient care, typically 35 minutes per day
$504.1K
6.0K services$83.91/svc2.11x markup
99222Initial hospital inpatient care, typically 50 minutes per day
$456.5K
4.3K services$106.91/svc2.10x markup
90960Dialysis services (4 or more physician visits per month), patient 20 years of age and older
$330.6K
1.2K services$264.66/svc2.15x markup
90935Hemodialysis procedure with one physician evaluation
$321.9K
5.5K services$58.46/svc2.13x markup
90961Dialysis services (2-3 physician visits per month), patient 20 years of age and older
$166.6K
751 services$221.84/svc2.18x markup
90966Home dialysis services per month, patient 20 years of age or older
$139.4K
665 services$209.64/svc2.01x markup
99223Initial hospital inpatient care, typically 70 minutes per day
$85.7K
541 services$158.33/svc2.15x markup
99213Established patient office or other outpatient visit, typically 15 minutes
$82.6K
1.3K services$62.27/svc2.44x markup
99204New patient office or other outpatient visit, typically 45 minutes
$45.0K
362 services$124.29/svc2.28x markup
99238Hospital discharge day management, 30 minutes or less
$16.1K
285 services$56.40/svc1.94x markup
90962Dialysis services (1 physician visit per month), patient 20 years of age and older
$14.5K
95 services$152.80/svc2.04x markup
90945Dialysis procedure including one evaluation
$12.6K
184 services$68.61/svc2.00x markup
99442Physician telephone patient service, 11-20 minutes of medical discussion
$10.7K
175 services$61.13/svc2.13x markup
99231Subsequent hospital inpatient care, typically 15 minutes per day
$10.4K
334 services$31.06/svc2.17x markup
90937Hemodialysis procedure with repeated evaluations
$9.9K
122 services$81.22/svc2.67x markup
99308Follow-up nursing facility visit per day, typically 15 minutes
$8.1K
139 services$58.40/svc2.42x markup
99441Physician telephone patient service, 5-10 minutes of medical discussion
$5.4K
135 services$39.78/svc1.88x markup
99205New patient office or other outpatient visit, typically 60 minutes
$1.7K
13 services$134.36/svc2.53x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
99232Subsequent hospital inpatient care, typically 25 minutes per day21.0K$1.2M$58.352.03x
99214Established patient office or other outpatient, visit typically 25 minutes9.0K$757.7K$84.462.26x
99233Subsequent hospital inpatient care, typically 35 minutes per day6.0K$504.1K$83.912.11x
99222Initial hospital inpatient care, typically 50 minutes per day4.3K$456.5K$106.912.10x
90960Dialysis services (4 or more physician visits per month), patient 20 years of age and older1.2K$330.6K$264.662.15x
90935Hemodialysis procedure with one physician evaluation5.5K$321.9K$58.462.13x
90961Dialysis services (2-3 physician visits per month), patient 20 years of age and older751$166.6K$221.842.18x
90966Home dialysis services per month, patient 20 years of age or older665$139.4K$209.642.01x
99223Initial hospital inpatient care, typically 70 minutes per day541$85.7K$158.332.15x
99213Established patient office or other outpatient visit, typically 15 minutes1.3K$82.6K$62.272.44x
99204New patient office or other outpatient visit, typically 45 minutes362$45.0K$124.292.28x
99238Hospital discharge day management, 30 minutes or less285$16.1K$56.401.94x
90962Dialysis services (1 physician visit per month), patient 20 years of age and older95$14.5K$152.802.04x
90945Dialysis procedure including one evaluation184$12.6K$68.612.00x
99442Physician telephone patient service, 11-20 minutes of medical discussion175$10.7K$61.132.13x
99231Subsequent hospital inpatient care, typically 15 minutes per day334$10.4K$31.062.17x
90937Hemodialysis procedure with repeated evaluations122$9.9K$81.222.67x
99308Follow-up nursing facility visit per day, typically 15 minutes139$8.1K$58.402.42x
99441Physician telephone patient service, 5-10 minutes of medical discussion135$5.4K$39.781.88x
99205New patient office or other outpatient visit, typically 60 minutes13$1.7K$134.362.53x

Markup Analysis

Charge-to-Payment Ratio

2.13x

This provider submits charges 2.13 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.13x means for every $100 Medicare pays, this provider initially charges $213. This is higher than the national average.

Location

Houston, TX

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
← Back to Provider Directory
State
All providers in TX →
Specialty
All Nephrology 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