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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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Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. John Croker
๐Ÿ‘ฉโ€โš•๏ธ
NPIndividual

John Croker, ARNP

NPI: 1518927763
Orange City, FL
10 years of data
Nurse Practitioner
$11.6M
Total Payments
126
Beneficiaries
34.1K
Services
1.49x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$11.6M
Specialty median$25.9K

๐Ÿ“‹ Key Findings

1Billed $11.6M over 10 years
299th percentile in Nurse Practitioner by payments
3Payments surged 7857% in 2017
42 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $11.6M in total Medicare payments ranks in the 99th percentile of Nurse Practitioner providers nationally.

Medicare payments to this provider grew 22863% from 2014 to 2023.

67% of their billing comes from a single procedure code (Q4253 โ€” Zenith amniotic membrane, per square centimeter).

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 7857% in 2017

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$188.97$66.222.85x$122.75$26.0K3927
2015$162.44$72.122.25x$90.32$29.6K41111
2016$169.17$36.354.65x$132.82$2.0K562
2017$169.14$80.072.11x$89.07$162.0K2.0K9
2018$170.27$81.502.09x$88.77$381.3K4.7K17
2019$162.52$73.392.21x$89.13$173.9K2.4K13
2020$132.23$56.862.33x$75.37$162.7K2.9K19
2021$153.92$63.782.41x$90.14$173.8K2.7K17
2022$802.53$525.721.53x$276.81$4.6M8.7K13
2023$802.91$604.031.33x$198.88$6.0M9.9K18

Top Procedures (20)

Q4253Zenith amniotic membrane, per square centimeter
$7.8M
11.1K services$704.51/svc1.42x markup
Q4262Dual layer impax membrane, per square centimeter
$2.4M
2.2K services$1.1K/svc1.28x markup
99349Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes
$387.2K
4.8K services$80.48/svc2.21x markup
99336Established patient custodial care facility, group care, or assisted living visit, typically 40 minutes
$217.7K
2.6K services$85.01/svc2.20x markup
99335Established patient custodial care facility, group care, or assisted living visit, typically 25 minutes
$191.2K
3.3K services$58.35/svc2.35x markup
99348Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes
$84.9K
1.8K services$48.08/svc2.40x markup
G0181Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow
$82.0K
1.2K services$69.65/svc2.17x markup
99350Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes
$58.8K
513 services$114.67/svc2.14x markup
99344Residence visit for new patient with moderate level of medical decision making, per day, if using time, at least 60 minutes
$49.1K
463 services$105.95/svc2.41x markup
99497Advance care planning, first 30 minutes
$47.1K
870 services$54.15/svc1.71x markup
15271Application of skin substitute graft to wound of trunk, arms, or legs, 25.0 sq cm or less of wound 100.0 sq cm or less
$43.4K
422 services$102.75/svc1.72x markup
99214Established patient office or other outpatient visit, 30-39 minutes
$39.5K
573 services$68.93/svc2.77x markup
99490Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
$33.6K
825 services$40.79/svc2.62x markup
11043Removal of muscle and/or tissue, 20.0 sq cm or less
$31.2K
201 services$155.30/svc1.73x markup
99345Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes
$20.8K
146 services$142.40/svc2.12x markup
99213Established patient office or other outpatient visit, 20-29 minutesโš  3.0x markup
$20.2K
447 services$45.15/svc3.04x markup
99327New patient custodial care facility, group care, or assisted living visit, typically 1 hour
$16.1K
138 services$116.76/svc2.29x 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
$13.5K
435 services$31.12/svc2.64x markup
99204New patient outpatient visit, total time 45-59 minutesโš  3.0x markup
$12.5K
136 services$91.96/svc3.02x markup
99354Prolonged office or other outpatient service first hour
$10.7K
307 services$34.77/svc1.44x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
Q4253Zenith amniotic membrane, per square centimeter11.1K$7.8M$704.511.42x
Q4262Dual layer impax membrane, per square centimeter2.2K$2.4M$1.1K1.28x
99349Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes4.8K$387.2K$80.482.21x
99336Established patient custodial care facility, group care, or assisted living visit, typically 40 minutes2.6K$217.7K$85.012.20x
99335Established patient custodial care facility, group care, or assisted living visit, typically 25 minutes3.3K$191.2K$58.352.35x
99348Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes1.8K$84.9K$48.082.40x
G0181Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow1.2K$82.0K$69.652.17x
99350Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes513$58.8K$114.672.14x
99344Residence visit for new patient with moderate level of medical decision making, per day, if using time, at least 60 minutes463$49.1K$105.952.41x
99497Advance care planning, first 30 minutes870$47.1K$54.151.71x
15271Application of skin substitute graft to wound of trunk, arms, or legs, 25.0 sq cm or less of wound 100.0 sq cm or less422$43.4K$102.751.72x
99214Established patient office or other outpatient visit, 30-39 minutes573$39.5K$68.932.77x
99490Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month825$33.6K$40.792.62x
11043Removal of muscle and/or tissue, 20.0 sq cm or less201$31.2K$155.301.73x
99345Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes146$20.8K$142.402.12x
99213Established patient office or other outpatient visit, 20-29 minutes447$20.2K$45.153.04x
99327New patient custodial care facility, group care, or assisted living visit, typically 1 hour138$16.1K$116.762.29x
99439Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month435$13.5K$31.122.64x
99204New patient outpatient visit, total time 45-59 minutes136$12.5K$91.963.02x
99354Prolonged office or other outpatient service first hour307$10.7K$34.771.44x

Markup Analysis

Charge-to-Payment Ratio

1.49x

This provider submits charges 1.49 times higher than what Medicare actually pays.

What This Means

A markup ratio of 1.49x means for every $100 Medicare pays, this provider initially charges $149. This is lower than the national average.

Location

Orange City, FL

Provider Verification

Always verify provider credentials and location before scheduling appointments. This data reflects Medicare payments and may not include all practice locations.

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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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