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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. Najmuddin Karimjee
๐Ÿฉบ
MDIndividual

Najmuddin Karimjee, M.D.

NPI: 1285660241
Houston, TX
10 years of data
Internal Medicine
$6.0M
Total Payments
99.0K
Beneficiaries
164.8K
Services
2.25x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$6.0M
Specialty median$84.0K

๐Ÿ“‹ Key Findings

1Billed $6.0M over 10 years
22.25x markup ratio (above median)
399th percentile in Internal Medicine by payments
466 services/day โ€” unusually high
5Payments surged 51% in 2019
63 procedures with >3x markup

This provider averages 66 services per working day

Based on 164.8K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $6.0M in total Medicare payments ranks in the 99th percentile of Internal Medicine providers nationally.

Averaging 66 services per working day raises questions about billing patterns.

AI-generated analysis based on Medicare payment data.

Annual Medicare Payments

Annual Services Provided

Avg Payment per Service

Markup Ratio Over Time

๐Ÿ“ˆ

Notable: Payments increased 51% in 2019

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 โ€” the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$97.46$43.912.22x$53.55$427.6K12.4K8.2K
2015$81.50$41.961.94x$39.54$447.4K13.2K8.8K
2016$104.29$43.642.39x$60.65$427.7K12.4K8.2K
2017$121.75$45.712.66x$76.04$479.9K14.7K9.8K
2018$130.81$46.322.82x$84.49$537.3K15.2K9.9K
2019$114.07$42.602.68x$71.47$810.7K22.7K13.5K
2020$103.56$43.482.38x$60.08$790.4K22.4K11.6K
2021$87.83$39.462.23x$48.37$807.2K21.3K10.7K
2022$98.30$43.822.24x$54.48$694.5K15.9K9.3K
2023$106.16$45.912.31x$60.25$595.1K14.6K9.1K

Top Procedures (20)

99213Established patient office or other outpatient visit, typically 15 minutes
$1.5M
29.9K services$51.37/svc2.51x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$1.4M
20.4K services$69.92/svc2.39x markup
G0439Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
$776.1K
6.6K services$117.25/svc1.33x markup
99490Chronic care management services at least 20 minutes per calendar month
$562.2K
17.2K services$32.74/svc1.74x markup
99215Established patient office or other outpatient, visit typically 40 minutes
$331.3K
3.4K services$97.83/svc2.02x markup
87426Coronavirus ag ia
$131.9K
3.1K services$43.05/svc1.76x markup
99497Advance care planning by the physician or other qualified health care professional
$131.2K
2.6K services$51.34/svc2.50x markup
G0402Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment
$114.8K
749 services$153.24/svc1.09x markup
99203New patient office or other outpatient visit, typically 30 minutes
$74.8K
1.1K services$66.09/svc2.93x markup
36415Insertion of needle into vein for collection of blood sampleโš  4.3x markup
$69.1K
19.9K services$3.47/svc4.32x markup
99204New patient office or other outpatient visit, typically 45 minutes
$62.5K
654 services$95.49/svc2.60x markup
G0438Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit
$62.2K
376 services$165.34/svc1.42x markup
86328Ia nfct ab sarscov2 covid19
$56.5K
1.2K services$45.23/svc1.66x markup
99496Transitional care management services, highly complexity, requiring face-to-face visits within 7 days of discharge
$53.6K
323 services$165.85/svc1.33x markup
93000Routine EKG using at least 12 leads including interpretation and reportโš  3.9x markup
$52.3K
5.5K services$9.56/svc3.86x markup
99211Established patient office or other outpatient visit, typically 5 minutes
$41.7K
2.6K services$16.13/svc2.65x markup
93306Ultrasound examination of heart including color-depicted blood flow rate, direction, and valve function
$36.6K
243 services$150.49/svc2.62x markup
81002Urinalysis, manual testโš  5.4x markup
$35.0K
10.3K services$3.42/svc5.43x markup
90674Vaccine for influenza for administration into muscle, 0.5 ml dosage
$29.6K
1.2K services$25.11/svc1.19x markup
87804Detection test for influenza virus
$22.5K
1.4K services$16.27/svc2.79x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
99213Established patient office or other outpatient visit, typically 15 minutes29.9K$1.5M$51.372.51x
99214Established patient office or other outpatient, visit typically 25 minutes20.4K$1.4M$69.922.39x
G0439Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit6.6K$776.1K$117.251.33x
99490Chronic care management services at least 20 minutes per calendar month17.2K$562.2K$32.741.74x
99215Established patient office or other outpatient, visit typically 40 minutes3.4K$331.3K$97.832.02x
87426Coronavirus ag ia3.1K$131.9K$43.051.76x
99497Advance care planning by the physician or other qualified health care professional2.6K$131.2K$51.342.50x
G0402Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment749$114.8K$153.241.09x
99203New patient office or other outpatient visit, typically 30 minutes1.1K$74.8K$66.092.93x
36415Insertion of needle into vein for collection of blood sample19.9K$69.1K$3.474.32x
99204New patient office or other outpatient visit, typically 45 minutes654$62.5K$95.492.60x
G0438Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit376$62.2K$165.341.42x
86328Ia nfct ab sarscov2 covid191.2K$56.5K$45.231.66x
99496Transitional care management services, highly complexity, requiring face-to-face visits within 7 days of discharge323$53.6K$165.851.33x
93000Routine EKG using at least 12 leads including interpretation and report5.5K$52.3K$9.563.86x
99211Established patient office or other outpatient visit, typically 5 minutes2.6K$41.7K$16.132.65x
93306Ultrasound examination of heart including color-depicted blood flow rate, direction, and valve function243$36.6K$150.492.62x
81002Urinalysis, manual test10.3K$35.0K$3.425.43x
90674Vaccine for influenza for administration into muscle, 0.5 ml dosage1.2K$29.6K$25.111.19x
87804Detection test for influenza virus1.4K$22.5K$16.272.79x

Markup Analysis

Charge-to-Payment Ratio

2.25x

This provider submits charges 2.25 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.25x means for every $100 Medicare pays, this provider initially charges $225. 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.

Similar Providers

Other Internal Medicine providers in TX for peer comparison.

Najmuddin Karimjee (you)
$6.0M
Owen Ellington, M.D, J.D.
$34.4M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Owen Ellington, M.D, J.D.Humble, TX$34.4Mโœ“ Clear

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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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