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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.
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. Mark Mazzare
๐Ÿฉบ
MDIndividual

Mark Mazzare, M.D.

NPI: 1891769709
Tyler, TX
10 years of data
Internal Medicine
$5.0M
Total Payments
104
Beneficiaries
318.5K
Services
1.31x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$5.0M
Specialty median$84.0K

๐Ÿ“‹ Key Findings

1Billed $5.0M over 10 years
299th percentile in Internal Medicine by payments
3127 services/day โ€” unusually high
4Payments surged 4176% in 2023

This provider averages 127 services per working day

Based on 318.5K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $5.0M in total Medicare payments ranks in the 99th percentile of Internal Medicine providers nationally.

Averaging 127 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 993% from 2014 to 2023.

69% of their billing comes from a single procedure code (K1034 โ€” Provision of covid-19 test, nonprescription self-administered and self-collected use, fda approved, authorized or cleared, one test count).

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 4176% in 2023

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$139.63$65.952.12x$73.68$312.9K4.7K15
2015$146.37$70.012.09x$76.36$307.1K4.4K16
2016$134.41$74.051.82x$60.36$239.9K3.2K13
2017$121.19$69.991.73x$51.20$255.2K3.6K7
2018$96.83$53.161.82x$43.67$161.2K3.0K9
2019$91.28$50.861.79x$40.42$102.9K2.0K8
2020$93.03$50.751.83x$42.28$100.1K2.0K13
2021$90.81$49.841.82x$40.97$64.5K1.3K5
2022$26.81$16.601.62x$10.21$80.0K4.8K9
2023$12.21$11.821.03x$0.39$3.4M289.3K9

Top Procedures (20)

K1034Provision of covid-19 test, nonprescription self-administered and self-collected use, fda approved, authorized or cleared, one test count
$3.4M
292.8K services$11.76/svc1.02x markup
99308Follow-up nursing facility visit per day, typically 15 minutes
$393.0K
7.7K services$50.82/svc1.77x markup
99232Subsequent hospital inpatient care, typically 25 minutes per day
$357.1K
6.5K services$54.77/svc2.20x markup
99309Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
$339.3K
5.0K services$67.41/svc1.78x markup
99223Initial hospital inpatient care, typically 70 minutes per day
$101.3K
665 services$152.32/svc1.91x markup
99233Subsequent hospital inpatient care, typically 35 minutes per day
$61.6K
780 services$79.02/svc2.28x markup
99239Hospital discharge day management, more than 30 minutes
$61.4K
753 services$81.58/svc1.68x markup
99310Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes
$43.9K
431 services$101.84/svc1.62x markup
99306Initial nursing facility visit, typically 45 minutes per day
$41.4K
327 services$126.70/svc1.66x markup
99222Initial hospital inpatient care, typically 50 minutes per day
$33.1K
323 services$102.59/svc2.30x markup
99305Initial nursing facility visit per day, typically 35 minutes
$29.1K
298 services$97.72/svc1.69x markup
99204New patient office or other outpatient visit, typically 45 minutes
$23.0K
234 services$98.21/svc2.29x markup
99220Hospital observation care typically 70 minutes per day
$17.0K
121 services$140.36/svc1.92x markup
99307Subsequent nursing facility visit, typically 10 minutes per day
$16.8K
500 services$33.55/svc1.79x markup
99458Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes
$9.7K
307 services$31.51/svc2.61x markup
99457Management using the results of remote vital sign monitoring per calendar month, first 20 minutes
$9.5K
245 services$38.87/svc2.65x markup
99439Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month
$9.5K
255 services$37.26/svc2.50x markup
99490Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
$8.1K
164 services$49.50/svc2.46x markup
99318Nursing facility annual assessment, typically 30 minutes
$7.2K
100 services$72.23/svc2.46x markup
99454Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days
$6.2K
147 services$42.12/svc2.58x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
K1034Provision of covid-19 test, nonprescription self-administered and self-collected use, fda approved, authorized or cleared, one test count292.8K$3.4M$11.761.02x
99308Follow-up nursing facility visit per day, typically 15 minutes7.7K$393.0K$50.821.77x
99232Subsequent hospital inpatient care, typically 25 minutes per day6.5K$357.1K$54.772.20x
99309Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes5.0K$339.3K$67.411.78x
99223Initial hospital inpatient care, typically 70 minutes per day665$101.3K$152.321.91x
99233Subsequent hospital inpatient care, typically 35 minutes per day780$61.6K$79.022.28x
99239Hospital discharge day management, more than 30 minutes753$61.4K$81.581.68x
99310Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes431$43.9K$101.841.62x
99306Initial nursing facility visit, typically 45 minutes per day327$41.4K$126.701.66x
99222Initial hospital inpatient care, typically 50 minutes per day323$33.1K$102.592.30x
99305Initial nursing facility visit per day, typically 35 minutes298$29.1K$97.721.69x
99204New patient office or other outpatient visit, typically 45 minutes234$23.0K$98.212.29x
99220Hospital observation care typically 70 minutes per day121$17.0K$140.361.92x
99307Subsequent nursing facility visit, typically 10 minutes per day500$16.8K$33.551.79x
99458Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes307$9.7K$31.512.61x
99457Management using the results of remote vital sign monitoring per calendar month, first 20 minutes245$9.5K$38.872.65x
99439Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month255$9.5K$37.262.50x
99490Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month164$8.1K$49.502.46x
99318Nursing facility annual assessment, typically 30 minutes100$7.2K$72.232.46x
99454Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days147$6.2K$42.122.58x

Markup Analysis

Charge-to-Payment Ratio

1.31x

This provider submits charges 1.31 times higher than what Medicare actually pays.

What This Means

A markup ratio of 1.31x means for every $100 Medicare pays, this provider initially charges $131. This is lower than the national average.

Location

Tyler, 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.

Mark Mazzare (you)
$5.0M
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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