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Methodology•Download Data
  1. Home
  2. Providers
  3. Tan Ngo
🩺
MDIndividual

Tan Ngo, M.D.

NPI: 1770503997
Westminster, CA
10 years of data
Internal Medicine
$4.6M
Total Payments
45.4K
Beneficiaries
193.4K
Services
1.63x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$4.6M
Specialty median$84.0K

📋 Key Findings

1Billed $4.6M over 10 years
21.63x markup ratio
399th percentile in Internal Medicine by payments
477 services/day — unusually high

This provider averages 77 services per working day

Based on 193.4K total services over 10 years (250 working days/year). Learn about impossible service volumes →

🔎 Data Analysis

This provider's $4.6M in total Medicare payments ranks in the 99th percentile of Internal Medicine providers nationally.

Averaging 77 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 — the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$61.06$39.451.55x$21.61$422.5K17.7K4.4K
2015$59.02$38.251.54x$20.77$515.0K22.7K5.1K
2016$59.35$37.521.58x$21.83$443.4K19.9K5.0K
2017$59.26$35.861.65x$23.40$435.3K19.6K5.0K
2018$59.29$35.151.69x$24.14$484.7K22.2K5.4K
2019$60.06$36.791.63x$23.27$560.9K23.1K5.2K
2020$70.12$42.461.65x$27.66$382.0K16.4K3.7K
2021$69.26$45.251.53x$24.01$374.8K14.2K3.4K
2022$63.16$45.221.40x$17.94$405.2K16.4K3.6K
2023$62.88$43.661.44x$19.22$528.3K21.0K4.6K

Top Procedures (20)

99213Established patient office or other outpatient visit, typically 15 minutes
$945.5K
15.1K services$62.73/svc1.44x markup
97110Therapeutic exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes
$780.6K
34.9K services$22.35/svc1.68x markup
97035Application of ultrasound to 1 or more areas, each 15 minutes
$334.8K
38.0K services$8.81/svc1.81x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$267.5K
2.9K services$90.88/svc1.44x markup
97012Application of mechanical traction to 1 or more areas
$249.3K
24.6K services$10.13/svc1.87x markup
97162Evaluation of physical therapy, typically 30 minutes
$239.2K
3.3K services$72.79/svc1.43x markup
97032Application of electrical stimulation to 1 or more areas, each 15 minutes
$225.4K
20.7K services$10.89/svc1.86x markup
20610Aspiration and/or injection of large joint or joint capsule
$167.2K
3.3K services$50.60/svc1.74x markup
99212Established patient office or other outpatient visit, typically 10 minutes
$135.5K
3.3K services$41.22/svc1.36x markup
20553Injections of trigger points in 3 or more muscles
$115.2K
2.1K services$54.01/svc1.41x markup
97001Physical therapy evaluation
$107.3K
1.7K services$61.51/svc1.45x markup
96360Hydration infusion into a vein 31 minutes to 1 hour
$101.8K
2.6K services$39.27/svc1.62x markup
12002Repair of wound (2.6 to 7.5 centimeters) of the scalp, neck, underarms, genitals, trunk, arms and/or legs
$101.1K
1.1K services$94.22/svc1.80x markup
96372Injection beneath the skin or into muscle for therapy, diagnosis, or prevention
$97.3K
6.2K services$15.81/svc1.75x markup
94640Respiratory inhaled pressure or nonpressure treatment to relieve airway obstruction or for sputum specimen
$83.0K
6.0K services$13.82/svc1.52x markup
97124Therapeutic massage to 1 or more areas, each 15 minutes
$78.8K
4.5K services$17.41/svc1.81x markup
69210Removal of impact ear wax, one ear
$73.7K
1.8K services$40.85/svc1.54x markup
20605Aspiration and/or injection of medium joint or joint capsule
$69.7K
1.7K services$40.95/svc1.72x markup
99204New patient office or other outpatient visit, typically 45 minutes
$66.4K
499 services$133.16/svc1.40x markup
20600Aspiration and/or injection of small joint or joint capsule
$66.1K
2.6K services$25.56/svc2.51x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
99213Established patient office or other outpatient visit, typically 15 minutes15.1K$945.5K$62.731.44x
97110Therapeutic exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes34.9K$780.6K$22.351.68x
97035Application of ultrasound to 1 or more areas, each 15 minutes38.0K$334.8K$8.811.81x
99214Established patient office or other outpatient, visit typically 25 minutes2.9K$267.5K$90.881.44x
97012Application of mechanical traction to 1 or more areas24.6K$249.3K$10.131.87x
97162Evaluation of physical therapy, typically 30 minutes3.3K$239.2K$72.791.43x
97032Application of electrical stimulation to 1 or more areas, each 15 minutes20.7K$225.4K$10.891.86x
20610Aspiration and/or injection of large joint or joint capsule3.3K$167.2K$50.601.74x
99212Established patient office or other outpatient visit, typically 10 minutes3.3K$135.5K$41.221.36x
20553Injections of trigger points in 3 or more muscles2.1K$115.2K$54.011.41x
97001Physical therapy evaluation1.7K$107.3K$61.511.45x
96360Hydration infusion into a vein 31 minutes to 1 hour2.6K$101.8K$39.271.62x
12002Repair of wound (2.6 to 7.5 centimeters) of the scalp, neck, underarms, genitals, trunk, arms and/or legs1.1K$101.1K$94.221.80x
96372Injection beneath the skin or into muscle for therapy, diagnosis, or prevention6.2K$97.3K$15.811.75x
94640Respiratory inhaled pressure or nonpressure treatment to relieve airway obstruction or for sputum specimen6.0K$83.0K$13.821.52x
97124Therapeutic massage to 1 or more areas, each 15 minutes4.5K$78.8K$17.411.81x
69210Removal of impact ear wax, one ear1.8K$73.7K$40.851.54x
20605Aspiration and/or injection of medium joint or joint capsule1.7K$69.7K$40.951.72x
99204New patient office or other outpatient visit, typically 45 minutes499$66.4K$133.161.40x
20600Aspiration and/or injection of small joint or joint capsule2.6K$66.1K$25.562.51x

Markup Analysis

Charge-to-Payment Ratio

1.63x

This provider submits charges 1.63 times higher than what Medicare actually pays.

What This Means

A markup ratio of 1.63x means for every $100 Medicare pays, this provider initially charges $163. This is lower than the national average.

Location

Westminster, 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.

Tan Ngo (you)
$4.6M
Aaron Jeng, MD, MPH
$45.6M
Richard Park, M.D.⚠️
$34.7M
Show detailed table ▾
ProviderLocationTotal PaymentsStatus
Aaron Jeng, MD, MPHSan Gabriel, CA$45.6M✓ Clear
Richard Park, M.D.Granada Hills, CA$34.7M⚠️ Flagged

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Data Sources

  • • Centers for Medicare & Medicaid Services (CMS)
  • • Medicare Provider Utilization and Payment Data (2014-2023)
  • • 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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