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

Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. George Grifka
๐Ÿ”ช
MDIndividual

George Grifka, M.D.

NPI: 1326189580
Santa Monica, CA
10 years of data
Cardiac Surgery
$7.1M
Total Payments
37.1K
Beneficiaries
49.7K
Services
3.42x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$7.1M
Specialty median$102.2K

๐Ÿ“‹ Key Findings

1Billed $7.1M over 10 years
23.42x markup ratio (above median)
399th percentile in Cardiac Surgery by payments
49 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $7.1M 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$558.62$140.993.96x$417.63$597.5K4.7K3.2K
2015$597.96$144.224.15x$453.74$614.8K4.7K3.4K
2016$569.50$140.734.05x$428.77$599.2K4.9K3.5K
2017$584.55$155.463.76x$429.09$656.4K5.3K3.9K
2018$603.40$167.923.59x$435.48$726.5K5.3K3.9K
2019$609.38$168.823.61x$440.56$714.1K5.3K3.9K
2020$659.38$192.773.42x$466.61$710.2K4.3K3.4K
2021$643.84$191.043.37x$452.80$870.6K5.3K4.2K
2022$640.75$191.433.35x$449.32$819.6K4.9K3.9K
2023$906.07$324.562.79x$581.51$802.8K4.8K3.8K

Top Procedures (20)

78492Nuclear medicine study heart muscle at rest and/or stress multiple studiesโš  4.8x markup
$2.0M
1.6K services$1.2K/svc4.82x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$1.2M
13.8K services$88.26/svc1.49x markup
99215Established patient office or other outpatient, visit typically 40 minutes
$551.6K
4.3K services$128.67/svc1.46x markup
A9555Rubidium rb-82, diagnostic, per study dose, up to 60 millicuriesโš  6.0x markup
$532.9K
1.6K services$332.46/svc6.02x markup
93306Ultrasound examination of heart including color-depicted blood flow rate, direction, and valve functionโš  3.7x markup
$512.0K
3.5K services$146.82/svc3.70x markup
93351Ultrasound examination and continuous monitoring of the heart performed during rest, exercise, and/or drug-induced stress with interpretation and report
$446.1K
2.1K services$214.68/svc2.91x markup
93229Heart rhythm tracing, computer analysis, physician prescribed transmission of patient-triggered events greater than 24-hour EKG up to 30 days
$320.6K
446 services$718.87/svc1.54x markup
93880Ultrasound scanning of blood flow (outside the brain) on both sides of head and neck
$299.8K
1.8K services$169.46/svc2.36x markup
99205New patient office or other outpatient visit, typically 60 minutes
$162.6K
968 services$167.97/svc2.38x markup
99223Initial hospital inpatient care, typically 70 minutes per day
$154.8K
948 services$163.26/svc2.45x markup
99233Subsequent hospital inpatient care, typically 35 minutes per day
$149.6K
1.7K services$85.53/svc1.53x markup
93978Ultrasound scan of vena cava or groin graft or vessel blood flow
$129.3K
914 services$141.49/svc2.23x markup
93015Exercise or drug-induced heart and blood vessel stress test with EKG monitoring, physician supervision, interpretation, and reportโš  5.2x markup
$98.9K
1.6K services$63.22/svc5.15x markup
93320Doppler ultrasound study of heart blood flow, valves, and chambersโš  3.4x markup
$98.8K
2.1K services$47.16/svc3.39x markup
J2785Injection, regadenoson, 0.1 mgโš  4.5x markup
$72.5K
1.6K services$44.67/svc4.48x markup
93224Heart rhythm tracing, analysis, and interpretation of 48-hour EKGโš  7.2x markup
$56.0K
807 services$69.35/svc7.21x markup
93000Routine EKG using at least 12 leads including interpretation and reportโš  6.6x markup
$51.1K
3.7K services$13.64/svc6.60x markup
93925Ultrasound study of arteries and arterial grafts of both legs
$49.2K
231 services$213.02/svc1.76x markup
33285Insertion of heart rhythm monitor under skin
$49.0K
12 services$4.1K/svc1.96x markup
93325Doppler ultrasound study of color-directed heart blood flow, rate, and valve functionโš  7.1x markup
$47.3K
2.1K services$22.59/svc7.08x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
78492Nuclear medicine study heart muscle at rest and/or stress multiple studies1.6K$2.0M$1.2K4.82x
99214Established patient office or other outpatient, visit typically 25 minutes13.8K$1.2M$88.261.49x
99215Established patient office or other outpatient, visit typically 40 minutes4.3K$551.6K$128.671.46x
A9555Rubidium rb-82, diagnostic, per study dose, up to 60 millicuries1.6K$532.9K$332.466.02x
93306Ultrasound examination of heart including color-depicted blood flow rate, direction, and valve function3.5K$512.0K$146.823.70x
93351Ultrasound examination and continuous monitoring of the heart performed during rest, exercise, and/or drug-induced stress with interpretation and report2.1K$446.1K$214.682.91x
93229Heart rhythm tracing, computer analysis, physician prescribed transmission of patient-triggered events greater than 24-hour EKG up to 30 days446$320.6K$718.871.54x
93880Ultrasound scanning of blood flow (outside the brain) on both sides of head and neck1.8K$299.8K$169.462.36x
99205New patient office or other outpatient visit, typically 60 minutes968$162.6K$167.972.38x
99223Initial hospital inpatient care, typically 70 minutes per day948$154.8K$163.262.45x
99233Subsequent hospital inpatient care, typically 35 minutes per day1.7K$149.6K$85.531.53x
93978Ultrasound scan of vena cava or groin graft or vessel blood flow914$129.3K$141.492.23x
93015Exercise or drug-induced heart and blood vessel stress test with EKG monitoring, physician supervision, interpretation, and report1.6K$98.9K$63.225.15x
93320Doppler ultrasound study of heart blood flow, valves, and chambers2.1K$98.8K$47.163.39x
J2785Injection, regadenoson, 0.1 mg1.6K$72.5K$44.674.48x
93224Heart rhythm tracing, analysis, and interpretation of 48-hour EKG807$56.0K$69.357.21x
93000Routine EKG using at least 12 leads including interpretation and report3.7K$51.1K$13.646.60x
93925Ultrasound study of arteries and arterial grafts of both legs231$49.2K$213.021.76x
33285Insertion of heart rhythm monitor under skin12$49.0K$4.1K1.96x
93325Doppler ultrasound study of color-directed heart blood flow, rate, and valve function2.1K$47.3K$22.597.08x

Markup Analysis

Charge-to-Payment Ratio

3.42x

This provider submits charges 3.42 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.42x means for every $100 Medicare pays, this provider initially charges $342. This is higher than the national average.

Location

Santa Monica, CA

Provider Verification

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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.

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