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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. Sherleen Mohamdi-Osman
๐Ÿฉบ
MDIndividual

Sherleen Mohamdi-Osman, MD

NPI: 1871706358
Wake Island, HI
10 years of data
Internal Medicine
$4.5M
Total Payments
4.8K
Beneficiaries
19.3K
Services
1.36x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$4.5M
Specialty median$84.0K

๐Ÿ“‹ Key Findings

1Billed $4.5M over 10 years
299th percentile in Internal Medicine by payments
3Payments surged 2724% in 2019
44 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $4.5M in total Medicare payments ranks in the 99th percentile of Internal Medicine providers nationally.

Medicare payments to this provider grew 8907% from 2014 to 2023.

91% of their billing comes from a single procedure code (90960 โ€” Dialysis services (4 or more physician visits per month), patient 20 years of age and older).

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 2724% 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$219.92$53.434.12x$166.49$10.3K241109
2015$194.86$45.064.32x$149.80$11.1K239142
2016$193.98$43.894.42x$150.09$15.9K344185
2017$194.23$43.014.52x$151.22$13.9K310145
2018$197.66$45.334.36x$152.33$4.2K10872
2019$187.68$129.561.45x$58.12$118.8K634557
2020$197.57$141.111.40x$56.46$1.3M5.6K896
2021$206.91$146.431.41x$60.48$1.1M4.4K911
2022$225.88$162.341.39x$63.54$1.0M3.7K866
2023$187.35$137.191.37x$50.16$927.8K3.6K889

Top Procedures (14)

90960Dialysis services (4 or more physician visits per month), patient 20 years of age and older
$4.1M
15.6K services$260.79/svc1.32x markup
90961Dialysis services (2-3 physician visits per month), patient 20 years of age and older
$239.3K
1.1K services$222.02/svc1.32x markup
90966Home dialysis services per month, patient 20 years of age or older
$52.9K
275 services$192.42/svc1.44x markup
99213Established patient office or other outpatient visit, typically 15 minutes
$34.1K
651 services$52.31/svc2.04x markup
99221Initial hospital inpatient care, typically 30 minutes per dayโš  4.3x markup
$21.3K
270 services$79.02/svc4.28x markup
90962Dialysis services (1 physician visit per month), patient 20 years of age and older
$18.7K
122 services$153.14/svc1.37x markup
99231Subsequent hospital inpatient care, typically 15 minutes per dayโš  4.3x markup
$17.2K
559 services$30.85/svc4.33x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$11.1K
123 services$90.62/svc1.41x markup
99232Subsequent hospital inpatient care, typically 25 minutes per dayโš  4.3x markup
$10.2K
182 services$56.15/svc4.26x markup
99205New patient office or other outpatient visit, typically 60 minutes
$9.8K
67 services$146.14/svc1.53x markup
36593Declotting infusion of implanted central venous access device or catheter
$4.8K
166 services$29.11/svc1.27x markup
99204New patient office or other outpatient visit, typically 45 minutes
$4.4K
40 services$109.06/svc1.63x markup
99212Established patient office or other outpatient visit, typically 10 minutesโš  5.3x markup
$1.7K
103 services$16.30/svc5.34x markup
99215Established patient office or other outpatient, visit typically 40 minutes
$1.1K
12 services$91.39/svc1.70x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
90960Dialysis services (4 or more physician visits per month), patient 20 years of age and older15.6K$4.1M$260.791.32x
90961Dialysis services (2-3 physician visits per month), patient 20 years of age and older1.1K$239.3K$222.021.32x
90966Home dialysis services per month, patient 20 years of age or older275$52.9K$192.421.44x
99213Established patient office or other outpatient visit, typically 15 minutes651$34.1K$52.312.04x
99221Initial hospital inpatient care, typically 30 minutes per day270$21.3K$79.024.28x
90962Dialysis services (1 physician visit per month), patient 20 years of age and older122$18.7K$153.141.37x
99231Subsequent hospital inpatient care, typically 15 minutes per day559$17.2K$30.854.33x
99214Established patient office or other outpatient, visit typically 25 minutes123$11.1K$90.621.41x
99232Subsequent hospital inpatient care, typically 25 minutes per day182$10.2K$56.154.26x
99205New patient office or other outpatient visit, typically 60 minutes67$9.8K$146.141.53x
36593Declotting infusion of implanted central venous access device or catheter166$4.8K$29.111.27x
99204New patient office or other outpatient visit, typically 45 minutes40$4.4K$109.061.63x
99212Established patient office or other outpatient visit, typically 10 minutes103$1.7K$16.305.34x
99215Established patient office or other outpatient, visit typically 40 minutes12$1.1K$91.391.70x

Markup Analysis

Charge-to-Payment Ratio

1.36x

This provider submits charges 1.36 times higher than what Medicare actually pays.

What This Means

A markup ratio of 1.36x means for every $100 Medicare pays, this provider initially charges $136. This is lower than the national average.

Location

Wake Island, HI

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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