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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. Maria Lourdes De Leon
๐Ÿฉบ
MDIndividual

Maria Lourdes De Leon, M.D.

NPI: 1285775437
South Gate, CA
10 years of data
Family Practice
$3.6M
Total Payments
21.6K
Beneficiaries
47.7K
Services
1.69x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$3.6M
Specialty median$55.2K

๐Ÿ“‹ Key Findings

1Billed $3.6M over 10 years
21.69x markup ratio
399th percentile in Family Practice by payments
4Payments surged 1655% in 2020
54 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $3.6M in total Medicare payments ranks in the 99th percentile of Family Practice providers nationally.

Medicare payments to this provider grew 19286% from 2014 to 2023.

75% of their billing comes from a single procedure code (G0181 โ€” Physician 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 development and/or revision of c).

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 1655% in 2020

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$72.59$28.732.53x$43.86$6.2K144117
2015$137.83$82.871.66x$54.96$17.4K296222
2016$168.34$61.882.72x$106.46$6.3K11045
2017$170.10$65.982.58x$104.12$6.2K10546
2018$159.01$47.933.32x$111.08$6.8K14146
2019$242.31$59.244.09x$183.07$14.7K260101
2020$134.17$76.851.75x$57.32$257.2K3.1K2.0K
2021$137.21$78.091.76x$59.12$1.1M13.9K5.9K
2022$136.27$75.711.80x$60.56$1.0M13.5K6.5K
2023$118.35$59.521.99x$58.83$1.2M16.1K6.7K

Top Procedures (20)

G0181Physician 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 development and/or revision of c
$2.7M
29.9K services$90.66/svc1.66x markup
G0180Physician certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial implem
$311.9K
6.7K services$46.42/svc1.67x markup
G0179Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp
$236.9K
6.5K services$36.59/svc1.67x markup
99349Established patient home visit, typically 40 minutes
$82.5K
749 services$110.17/svc1.66x markup
99213Established patient office or other outpatient visit, typically 15 minutesโš  3.3x markup
$73.4K
1.4K services$50.80/svc3.26x markup
G0439Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
$51.4K
360 services$142.67/svc1.31x markup
99344New patient home visit, typically 60 minutes
$50.7K
332 services$152.67/svc1.70x markup
G0438Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit
$34.7K
187 services$185.57/svc1.33x markup
99497Advance care planning by the physician or other qualified health care professional
$25.1K
342 services$73.51/svc1.67x markup
G0108Diabetes outpatient self-management training services, individual, per 30 minutes
$16.1K
328 services$48.96/svc1.65x markup
99203New patient office or other outpatient visit, typically 30 minutes
$8.5K
123 services$69.36/svc2.09x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$7.7K
98 services$78.25/svc2.55x markup
99212Established patient office or other outpatient visit, typically 10 minutesโš  4.6x markup
$3.8K
137 services$28.08/svc4.57x markup
99473Self-measured blood pressure; patient education/training and device calibration
$3.2K
296 services$10.93/svc1.70x markup
93886Ultrasound scanning of head and neck vessel blood flow (inside the brain)
$1.8K
12 services$153.48/svc1.35x markup
93923Ultrasound study of arteries of both arms and legs
$1.7K
14 services$120.91/svc1.83x markup
93965Ultrasound study of veins of both arms or legs including assessment of functional maneuvers
$1.3K
15 services$86.77/svc1.74x markup
99407Smoking and tobacco use intensive counseling, greater than 10 minutes
$1.3K
41 services$31.44/svc1.31x markup
93000Routine EKG using at least 12 leads including interpretation and reportโš  3.8x markup
$683.47
55 services$12.43/svc3.81x markup
36415Insertion of needle into vein for collection of blood sampleโš  3.1x markup
$335.16
69 services$4.86/svc3.09x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
G0181Physician 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 development and/or revision of c29.9K$2.7M$90.661.66x
G0180Physician certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial implem6.7K$311.9K$46.421.67x
G0179Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp6.5K$236.9K$36.591.67x
99349Established patient home visit, typically 40 minutes749$82.5K$110.171.66x
99213Established patient office or other outpatient visit, typically 15 minutes1.4K$73.4K$50.803.26x
G0439Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit360$51.4K$142.671.31x
99344New patient home visit, typically 60 minutes332$50.7K$152.671.70x
G0438Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit187$34.7K$185.571.33x
99497Advance care planning by the physician or other qualified health care professional342$25.1K$73.511.67x
G0108Diabetes outpatient self-management training services, individual, per 30 minutes328$16.1K$48.961.65x
99203New patient office or other outpatient visit, typically 30 minutes123$8.5K$69.362.09x
99214Established patient office or other outpatient, visit typically 25 minutes98$7.7K$78.252.55x
99212Established patient office or other outpatient visit, typically 10 minutes137$3.8K$28.084.57x
99473Self-measured blood pressure; patient education/training and device calibration296$3.2K$10.931.70x
93886Ultrasound scanning of head and neck vessel blood flow (inside the brain)12$1.8K$153.481.35x
93923Ultrasound study of arteries of both arms and legs14$1.7K$120.911.83x
93965Ultrasound study of veins of both arms or legs including assessment of functional maneuvers15$1.3K$86.771.74x
99407Smoking and tobacco use intensive counseling, greater than 10 minutes41$1.3K$31.441.31x
93000Routine EKG using at least 12 leads including interpretation and report55$683.47$12.433.81x
36415Insertion of needle into vein for collection of blood sample69$335.16$4.863.09x

Markup Analysis

Charge-to-Payment Ratio

1.69x

This provider submits charges 1.69 times higher than what Medicare actually pays.

What This Means

A markup ratio of 1.69x means for every $100 Medicare pays, this provider initially charges $169. This is lower than the national average.

Location

South Gate, CA

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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