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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. Gadson Johnson
๐Ÿง 
MDIndividual

Gadson Johnson, M.D.

NPI: 1578767232
Santa Monica, CA
10 years of data
Psychiatry
$7.8M
Total Payments
35.4K
Beneficiaries
163.2K
Services
1.75x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$7.8M
Specialty median$36.7K

๐Ÿ“‹ Key Findings

1Billed $7.8M over 10 years
21.75x markup ratio
399th percentile in Psychiatry by payments
465 services/day โ€” unusually high

This provider averages 65 services per working day

Based on 163.2K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $7.8M in total Medicare payments ranks in the 99th percentile of Psychiatry providers nationally.

Averaging 65 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

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$131.58$83.391.58x$48.19$1.0M19.2K4.5K
2015$125.63$77.221.63x$48.41$986.7K19.6K4.7K
2016$128.85$79.201.63x$49.65$947.1K20.1K4.8K
2017$132.57$80.851.64x$51.72$885.5K17.9K4.3K
2018$138.77$87.711.58x$51.06$663.4K15.2K3.1K
2019$138.83$85.811.62x$53.02$717.1K17.1K3.0K
2020$142.17$90.801.57x$51.37$670.6K15.3K2.5K
2021$143.14$91.311.57x$51.83$610.8K13.3K2.7K
2022$152.20$91.981.65x$60.22$546.6K11.4K2.7K
2023$134.49$78.251.72x$56.24$748.3K13.9K3.1K

Top Procedures (17)

99231Subsequent hospital inpatient care, typically 15 minutes per day
$3.5M
105.9K services$33.10/svc1.95x markup
90833Psychotherapy, 30 minutes with patient and/or family member
$1.4M
26.6K services$52.57/svc1.55x markup
90792Psychiatric diagnostic evaluation with medical services
$874.1K
7.1K services$122.36/svc1.64x markup
99232Subsequent hospital inpatient care, typically 25 minutes per day
$778.5K
12.9K services$60.37/svc1.67x markup
99223Initial hospital inpatient care, typically 70 minutes per day
$614.1K
3.7K services$164.16/svc1.52x markup
99233Subsequent hospital inpatient care, typically 35 minutes per day
$401.3K
4.6K services$86.51/svc1.46x markup
99222Initial hospital inpatient care, typically 50 minutes per day
$175.7K
1.6K services$112.92/svc1.77x markup
99221Initial hospital inpatient care, typically 30 minutes per day
$20.5K
263 services$77.99/svc1.29x markup
99238Hospital discharge day management, 30 minutes or less
$3.0K
45 services$66.32/svc1.55x markup
90836Psychotherapy, 45 minutes with patient and/or family member
$2.4K
35 services$68.50/svc1.46x markup
99347Residence visit for established patient with straightforward medical decision making, per day, if using time, at least 15 minutes
$2.3K
62 services$37.72/svc1.99x markup
90785Interactive complexity
$2.2K
190 services$11.68/svc1.71x markup
99356Prolonged inpatient or observation hospital service first hour
$2.0K
26 services$77.16/svc1.56x markup
99306Initial nursing facility visit, typically 45 minutes per day
$1.6K
12 services$131.25/svc1.52x markup
99348Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes
$964.20
15 services$64.28/svc2.33x markup
99308Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes
$921.60
15 services$61.44/svc1.46x markup
99307Subsequent nursing facility visit, typically 10 minutes per day
$736.68
20 services$36.83/svc1.36x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
99231Subsequent hospital inpatient care, typically 15 minutes per day105.9K$3.5M$33.101.95x
90833Psychotherapy, 30 minutes with patient and/or family member26.6K$1.4M$52.571.55x
90792Psychiatric diagnostic evaluation with medical services7.1K$874.1K$122.361.64x
99232Subsequent hospital inpatient care, typically 25 minutes per day12.9K$778.5K$60.371.67x
99223Initial hospital inpatient care, typically 70 minutes per day3.7K$614.1K$164.161.52x
99233Subsequent hospital inpatient care, typically 35 minutes per day4.6K$401.3K$86.511.46x
99222Initial hospital inpatient care, typically 50 minutes per day1.6K$175.7K$112.921.77x
99221Initial hospital inpatient care, typically 30 minutes per day263$20.5K$77.991.29x
99238Hospital discharge day management, 30 minutes or less45$3.0K$66.321.55x
90836Psychotherapy, 45 minutes with patient and/or family member35$2.4K$68.501.46x
99347Residence visit for established patient with straightforward medical decision making, per day, if using time, at least 15 minutes62$2.3K$37.721.99x
90785Interactive complexity190$2.2K$11.681.71x
99356Prolonged inpatient or observation hospital service first hour26$2.0K$77.161.56x
99306Initial nursing facility visit, typically 45 minutes per day12$1.6K$131.251.52x
99348Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes15$964.20$64.282.33x
99308Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes15$921.60$61.441.46x
99307Subsequent nursing facility visit, typically 10 minutes per day20$736.68$36.831.36x

Markup Analysis

Charge-to-Payment Ratio

1.75x

This provider submits charges 1.75 times higher than what Medicare actually pays.

What This Means

A markup ratio of 1.75x means for every $100 Medicare pays, this provider initially charges $175. This is lower than the national average.

Location

Santa Monica, 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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