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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. Aaron Jeng
๐Ÿฉบ
MDIndividual

Aaron Jeng, MD, MPH

NPI: 1003053851
San Gabriel, CA
10 years of data
Internal Medicine
$45.6M
Total Payments
115
Beneficiaries
75.2K
Services
1.43x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$45.6M
Specialty median$84.0K
Rank #1 of 7 in specialty

๐Ÿ“‹ Key Findings

1Billed $45.6M over 10 years
299th percentile in Internal Medicine by payments
3Payments surged 10824% in 2023
47 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $45.6M in total Medicare payments ranks in the 99th percentile of Internal Medicine providers nationally.

Medicare payments to this provider grew 439322% from 2014 to 2023.

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 10824% 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$161.61$87.721.84x$73.89$9.8K1123
2015$350.00$78.114.48x$271.89$4.5K571
2016$381.64$94.884.02x$286.76$213.9K2.3K6
2017$317.85$92.273.44x$225.58$342.8K3.7K7
2018$349.95$93.193.76x$256.76$189.5K2.0K10
2019$372.59$98.193.79x$274.40$255.6K2.6K8
2020$369.54$98.903.74x$270.64$580.3K5.9K12
2021$294.98$94.663.12x$200.32$448.5K4.7K16
2022$275.09$97.362.83x$177.73$395.2K4.1K24
2023$1.1K$867.711.32x$274.87$43.2M49.8K28

Top Procedures (20)

Q4236Carepatch, per square centimeter
$20.9M
21.2K services$985.96/svc1.32x markup
Q4281Barrera sl or barrera dl, per square centimeter
$13.4M
11.0K services$1.2K/svc1.28x markup
Q4205Membrane graft or membrane wrap, per square centimeter
$8.4M
7.2K services$1.2K/svc1.29x markup
99233Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutesโš  3.5x markup
$1.2M
13.1K services$89.25/svc3.48x markup
99223Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
$435.3K
2.6K services$168.27/svc2.86x markup
99309Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
$218.1K
2.8K services$77.93/svc2.64x markup
99232Subsequent hospital inpatient care, typically 25 minutes per dayโš  4.3x markup
$173.9K
2.8K services$61.36/svc4.27x markup
99239Hospital discharge day management, more than 30 minutesโš  4.9x markup
$129.6K
1.4K services$91.62/svc4.94x markup
99291Critical care delivery critically ill or injured patient, first 30-74 minutesโš  3.4x markup
$129.6K
696 services$186.16/svc3.42x markup
99214Established patient office or other outpatient visit, 30-39 minutes
$102.3K
1.0K services$101.43/svc2.46x markup
99238Hospital discharge day management, 30 minutes or lessโš  5.5x markup
$82.5K
1.3K services$63.46/svc5.47x 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
$56.5K
441 services$128.16/svc2.94x markup
99306Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutesโš  4.7x markup
$50.6K
355 services$142.49/svc4.65x markup
95165Professional service for preparation and provision of 1 or more antigensโš  3.3x markup
$49.6K
3.6K services$13.82/svc3.26x markup
99349Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes
$45.1K
419 services$107.54/svc2.98x markup
15275Application of skin substitute graft to wound of face, scalp, eyelids, mouth, neck, ears, around eyes, genitals, hands, feet, fingers, or toes, 25.0 sq cm or less of wound 100.0 sq cm or less
$31.4K
224 services$140.09/svc2.94x markup
M0243Intravenous infusion or subcutaneous injection, casirivimab and imdevimab includes infusion or injection, and post administration monitoring
$31.0K
60 services$517.29/svc1.47x markup
99213Established patient office or other outpatient visit, 20-29 minutes
$29.1K
412 services$70.51/svc2.55x markup
M0244Intravenous infusion or subcutaneous injection, casirivimab and imdevimab includes infusion or injection, and post administration monitoring in the home or residence; this includes a beneficiary's home that has been made provider-based to the hospital duri
$27.3K
37 services$737.37/svc1.13x markup
99222Initial hospital inpatient care, typically 50 minutes per day
$17.8K
154 services$115.39/svc2.58x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
Q4236Carepatch, per square centimeter21.2K$20.9M$985.961.32x
Q4281Barrera sl or barrera dl, per square centimeter11.0K$13.4M$1.2K1.28x
Q4205Membrane graft or membrane wrap, per square centimeter7.2K$8.4M$1.2K1.29x
99233Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes13.1K$1.2M$89.253.48x
99223Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes2.6K$435.3K$168.272.86x
99309Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes2.8K$218.1K$77.932.64x
99232Subsequent hospital inpatient care, typically 25 minutes per day2.8K$173.9K$61.364.27x
99239Hospital discharge day management, more than 30 minutes1.4K$129.6K$91.624.94x
99291Critical care delivery critically ill or injured patient, first 30-74 minutes696$129.6K$186.163.42x
99214Established patient office or other outpatient visit, 30-39 minutes1.0K$102.3K$101.432.46x
99238Hospital discharge day management, 30 minutes or less1.3K$82.5K$63.465.47x
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 less441$56.5K$128.162.94x
99306Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes355$50.6K$142.494.65x
95165Professional service for preparation and provision of 1 or more antigens3.6K$49.6K$13.823.26x
99349Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes419$45.1K$107.542.98x
15275Application of skin substitute graft to wound of face, scalp, eyelids, mouth, neck, ears, around eyes, genitals, hands, feet, fingers, or toes, 25.0 sq cm or less of wound 100.0 sq cm or less224$31.4K$140.092.94x
M0243Intravenous infusion or subcutaneous injection, casirivimab and imdevimab includes infusion or injection, and post administration monitoring60$31.0K$517.291.47x
99213Established patient office or other outpatient visit, 20-29 minutes412$29.1K$70.512.55x
M0244Intravenous infusion or subcutaneous injection, casirivimab and imdevimab includes infusion or injection, and post administration monitoring in the home or residence; this includes a beneficiary's home that has been made provider-based to the hospital duri37$27.3K$737.371.13x
99222Initial hospital inpatient care, typically 50 minutes per day154$17.8K$115.392.58x

Markup Analysis

Charge-to-Payment Ratio

1.43x

This provider submits charges 1.43 times higher than what Medicare actually pays.

What This Means

A markup ratio of 1.43x means for every $100 Medicare pays, this provider initially charges $143. This is lower than the national average.

Location

San Gabriel, CA

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 CA for peer comparison.

Aaron Jeng (you)
$45.6M
Richard Park, M.D.โš ๏ธ
$34.7M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Richard Park, M.D.Granada Hills, CA$34.7Mโš ๏ธ Flagged

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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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