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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. Philip Ngai
๐Ÿ‘๏ธ
MDIndividual

Philip Ngai, M.D.

NPI: 1649614215
West Covina, CA
7 years of data
Ophthalmology
$4.3M
Total Payments
34.9K
Beneficiaries
61.6K
Services
4.08x
Markup Ratio

Peer Comparison

96th
percentile in specialty
This provider$4.3M
Specialty median$383.7K

๐Ÿ“‹ Key Findings

1Billed $4.3M over 7 years
24.08x markup ratio (above median)
396th percentile in Ophthalmology by payments
4Payments surged 952% in 2018
519 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $4.3M in total Medicare payments ranks in the 96th percentile of Ophthalmology providers nationally.

Medicare payments to this provider grew 12319% from 2017 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 952% in 2018

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
2017$218.75$55.903.91x$162.85$9.6K155153
2018$496.44$98.845.02x$397.60$101.1K1.2K1.2K
2019$489.05$137.773.55x$351.28$389.4K5.4K4.1K
2020$635.89$145.804.36x$490.09$419.3K5.5K3.7K
2021$680.13$152.074.47x$528.06$1.0M13.5K7.4K
2022$711.23$167.704.24x$543.53$1.2M17.3K9.0K
2023$773.02$176.094.39x$596.93$1.2M18.5K9.4K

Top Procedures (20)

99215Established patient office or other outpatient, visit typically 40 minutesโš  3.5x markup
$964.7K
6.5K services$147.60/svc3.46x markup
66982Removal of cataract with insertion of lensโš  4.3x markup
$373.3K
597 services$625.23/svc4.27x markup
99214Established patient office or other outpatient, visit typically 25 minutesโš  3.6x markup
$362.5K
3.4K services$107.25/svc3.64x markup
92083Measurement of field of vision during daylight conditionsโš  4.1x markup
$340.9K
5.9K services$57.95/svc4.09x markup
92134Diagnostic imaging of retinaโš  3.4x markup
$245.5K
7.0K services$35.07/svc3.43x markup
92020Examination of cornea and iris using lens device and slit lampโš  4.7x markup
$244.3K
9.7K services$25.13/svc4.70x markup
92201Extended examination of eye with drawing of retinaโš  6.1x markup
$236.3K
10.8K services$21.91/svc6.11x markup
99204New patient office or other outpatient visit, typically 45 minutesโš  3.6x markup
$223.8K
1.7K services$135.16/svc3.56x markup
92014Eye and medical examination for diagnosis and treatment, established patient, 1 or more visitsโš  3.8x markup
$216.7K
2.0K services$109.63/svc3.82x markup
66174Dilation to improve eye fluid flowโš  4.8x markup
$158.0K
274 services$576.60/svc4.83x markup
66984Removal of cataract with insertion of lensโš  3.9x markup
$143.6K
309 services$464.75/svc3.89x markup
66821Removal of recurring cataract in lens capsule using laserโš  3.5x markup
$137.3K
452 services$303.79/svc3.52x markup
92133Diagnostic imaging of optic nerve of eyeโš  4.8x markup
$100.2K
3.2K services$31.31/svc4.75x markup
66989Complex extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eyeโš  3.8x markup
$99.4K
129 services$770.92/svc3.75x markup
92250Photography of the retinaโš  4.5x markup
$53.0K
1.3K services$40.85/svc4.53x markup
65855Laser repair to improve eye fluid flow, 1 or more sessionsโš  3.8x markup
$49.2K
220 services$223.41/svc3.75x markup
92100Multiple measurements of eye fluid pressure over an extended time period, same day
$47.6K
587 services$81.08/svc2.32x markup
0191TInternal insertion of eye fluid drainage deviceโš  6.3x markup
$43.9K
168 services$261.45/svc6.28x markup
99205New patient office or other outpatient visit, typically 60 minutesโš  4.1x markup
$30.8K
182 services$169.30/svc4.08x markup
92136Measurement of corneal curvature and depth of eyeโš  8.7x markup
$30.8K
1.1K services$27.56/svc8.68x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
99215Established patient office or other outpatient, visit typically 40 minutes6.5K$964.7K$147.603.46x
66982Removal of cataract with insertion of lens597$373.3K$625.234.27x
99214Established patient office or other outpatient, visit typically 25 minutes3.4K$362.5K$107.253.64x
92083Measurement of field of vision during daylight conditions5.9K$340.9K$57.954.09x
92134Diagnostic imaging of retina7.0K$245.5K$35.073.43x
92020Examination of cornea and iris using lens device and slit lamp9.7K$244.3K$25.134.70x
92201Extended examination of eye with drawing of retina10.8K$236.3K$21.916.11x
99204New patient office or other outpatient visit, typically 45 minutes1.7K$223.8K$135.163.56x
92014Eye and medical examination for diagnosis and treatment, established patient, 1 or more visits2.0K$216.7K$109.633.82x
66174Dilation to improve eye fluid flow274$158.0K$576.604.83x
66984Removal of cataract with insertion of lens309$143.6K$464.753.89x
66821Removal of recurring cataract in lens capsule using laser452$137.3K$303.793.52x
92133Diagnostic imaging of optic nerve of eye3.2K$100.2K$31.314.75x
66989Complex extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye129$99.4K$770.923.75x
92250Photography of the retina1.3K$53.0K$40.854.53x
65855Laser repair to improve eye fluid flow, 1 or more sessions220$49.2K$223.413.75x
92100Multiple measurements of eye fluid pressure over an extended time period, same day587$47.6K$81.082.32x
0191TInternal insertion of eye fluid drainage device168$43.9K$261.456.28x
99205New patient office or other outpatient visit, typically 60 minutes182$30.8K$169.304.08x
92136Measurement of corneal curvature and depth of eye1.1K$30.8K$27.568.68x

Markup Analysis

Charge-to-Payment Ratio

4.08x

This provider submits charges 4.08 times higher than what Medicare actually pays.

What This Means

A markup ratio of 4.08x means for every $100 Medicare pays, this provider initially charges $408. This is higher than the national average.

Location

West Covina, 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 Ophthalmology providers in CA for peer comparison.

Philip Ngai (you)
$4.3M
Nathan Steinle, M.D.
$63.1M
Stephen Couvillion, MD
$47.7M
Margaret Chang, M.D.
$47.6M
David Boyer, MD
$47.5M
Alessandro Castellarin, M.D.
$46.9M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Nathan Steinle, M.D.Santa Barbara, CA$63.1Mโœ“ Clear
Stephen Couvillion, MDSanta Barbara, CA$47.7Mโœ“ Clear
Margaret Chang, M.D.Sacramento, CA$47.6Mโœ“ Clear
David Boyer, MDLos Angeles, CA$47.5Mโœ“ Clear
Alessandro Castellarin, M.D.Santa Barbara, CA$46.9Mโœ“ Clear

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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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