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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. Norbert Zemankiewicz
🔪
DOIndividual

Norbert Zemankiewicz, D.O.

NPI: 1013056365
Pikesville, MD
10 years of data
Vascular Surgery
$20.5M
Total Payments
33.4K
Beneficiaries
39.6K
Services
2.54x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$20.5M
Specialty median$184.1K

📋 Key Findings

1Billed $20.5M over 10 years
22.54x markup ratio (above median)
399th percentile in Vascular Surgery by payments
49 procedures with >3x markup
✓ No flags detected

🔎 Data Analysis

This provider's $20.5M in total Medicare payments ranks in the 99th percentile of Vascular 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 — the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$4.1K$1.6K2.50x$2.5K$1.8M2.8K2.3K
2015$4.7K$1.7K2.82x$3.1K$2.7M3.8K3.1K
2016$3.7K$1.4K2.73x$2.4K$2.7M4.3K3.6K
2017$3.5K$1.2K2.82x$2.3K$2.5M5.1K4.3K
2018$4.0K$1.4K2.79x$2.5K$2.4M4.8K4.1K
2019$3.9K$1.6K2.43x$2.3K$2.5M4.7K4.0K
2020$3.6K$1.4K2.55x$2.2K$1.9M3.5K3.0K
2021$2.6K$1.0K2.56x$1.6K$1.4M3.5K3.0K
2022$2.5K$823.613.05x$1.7K$1.3M3.6K3.0K
2023$3.1K$998.223.15x$2.1K$1.2M3.6K2.9K

Top Procedures (20)

37227Removal of plaque and insertion of stents into arteries in one leg, endovascular, accessed through the skin or open procedure
$8.9M
726 services$12.2K/svc2.04x markup
37229Removal of plaque in artery in one leg, endovascular, accessed through the skin or open procedure
$3.8M
485 services$7.9K/svc2.54x markup
37225Removal of plaque in arteries in one leg, endovascular, accessed through the skin or open procedure
$1.9M
201 services$9.4K/svc2.34x markup
37252Ultrasound evaluation of blood vessel during diagnosis or treatment
$1.0M
968 services$1.1K/svc2.35x markup
37221Insertion of stents in artery in one side of groin, endovascular, accessed through the skin or open procedure⚠ 4.1x markup
$527.3K
179 services$2.9K/svc4.12x markup
37228Balloon dilation of artery of one leg, endovascular, accessed through the skin or open procedure⚠ 3.9x markup
$451.6K
177 services$2.6K/svc3.92x markup
93925Ultrasound study of arteries and arterial grafts of both legs
$325.3K
1.6K services$197.61/svc2.02x markup
37226Insertion of stents into arteries in one leg, endovascular, accessed through the skin or open procedure
$321.0K
48 services$6.7K/svc2.84x markup
93880Ultrasound scanning of blood flow (outside the brain) on both sides of head and neck
$298.9K
1.9K services$157.81/svc2.53x markup
93926Ultrasound study of arteries and arterial grafts of one leg or limited
$298.8K
2.7K services$109.41/svc2.74x markup
93922Ultrasound study of arteries of both arms and legs⚠ 3.4x markup
$292.6K
5.0K services$58.43/svc3.42x markup
99213Established patient office or other outpatient visit, typically 15 minutes
$283.5K
4.3K services$66.36/svc2.41x markup
93923Ultrasound study of arteries of both arms and legs⚠ 3.9x markup
$246.2K
2.4K services$102.98/svc3.88x markup
93971Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers⚠ 3.1x markup
$232.1K
2.4K services$96.37/svc3.11x markup
99203New patient office or other outpatient visit, typically 30 minutes
$207.9K
2.4K services$87.64/svc2.28x markup
93978Ultrasound scan of vena cava or groin graft or vessel blood flow⚠ 3.1x markup
$192.0K
1.3K services$146.67/svc3.07x markup
93970Ultrasound scan of veins of both arms or legs including assessment of compression and functional maneuvers
$184.8K
1.2K services$159.82/svc2.82x markup
75716Radiological supervision and interpretation of imaging of arteries of both arms or legs⚠ 10.5x markup
$135.3K
869 services$155.74/svc10.54x markup
99212Established patient office or other outpatient visit, typically 10 minutes⚠ 4.0x markup
$121.5K
3.5K services$35.21/svc3.98x markup
75625Radiological supervision and interpretation X-ray of abdominal aorta⚠ 8.1x markup
$97.5K
867 services$112.51/svc8.05x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
37227Removal of plaque and insertion of stents into arteries in one leg, endovascular, accessed through the skin or open procedure726$8.9M$12.2K2.04x
37229Removal of plaque in artery in one leg, endovascular, accessed through the skin or open procedure485$3.8M$7.9K2.54x
37225Removal of plaque in arteries in one leg, endovascular, accessed through the skin or open procedure201$1.9M$9.4K2.34x
37252Ultrasound evaluation of blood vessel during diagnosis or treatment968$1.0M$1.1K2.35x
37221Insertion of stents in artery in one side of groin, endovascular, accessed through the skin or open procedure179$527.3K$2.9K4.12x
37228Balloon dilation of artery of one leg, endovascular, accessed through the skin or open procedure177$451.6K$2.6K3.92x
93925Ultrasound study of arteries and arterial grafts of both legs1.6K$325.3K$197.612.02x
37226Insertion of stents into arteries in one leg, endovascular, accessed through the skin or open procedure48$321.0K$6.7K2.84x
93880Ultrasound scanning of blood flow (outside the brain) on both sides of head and neck1.9K$298.9K$157.812.53x
93926Ultrasound study of arteries and arterial grafts of one leg or limited2.7K$298.8K$109.412.74x
93922Ultrasound study of arteries of both arms and legs5.0K$292.6K$58.433.42x
99213Established patient office or other outpatient visit, typically 15 minutes4.3K$283.5K$66.362.41x
93923Ultrasound study of arteries of both arms and legs2.4K$246.2K$102.983.88x
93971Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers2.4K$232.1K$96.373.11x
99203New patient office or other outpatient visit, typically 30 minutes2.4K$207.9K$87.642.28x
93978Ultrasound scan of vena cava or groin graft or vessel blood flow1.3K$192.0K$146.673.07x
93970Ultrasound scan of veins of both arms or legs including assessment of compression and functional maneuvers1.2K$184.8K$159.822.82x
75716Radiological supervision and interpretation of imaging of arteries of both arms or legs869$135.3K$155.7410.54x
99212Established patient office or other outpatient visit, typically 10 minutes3.5K$121.5K$35.213.98x
75625Radiological supervision and interpretation X-ray of abdominal aorta867$97.5K$112.518.05x

Markup Analysis

Charge-to-Payment Ratio

2.54x

This provider submits charges 2.54 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.54x means for every $100 Medicare pays, this provider initially charges $254. This is higher than the national average.

Location

Pikesville, MD

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 Vascular Surgery providers in MD for peer comparison.

Norbert Zemankiewicz (you)
$20.5M
Samer Saiedy, M.D.
$49.1M
Ahmad Abu-Ghaida, M.D.
$37.3M
Show detailed table ▾
ProviderLocationTotal PaymentsStatus
Samer Saiedy, M.D.Cockeysville, MD$49.1M✓ Clear
Ahmad Abu-Ghaida, M.D.Baltimore, MD$37.3M✓ Clear

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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.

Believe this data is inaccurate? Dispute this data