Dr. Philip Ngai, MD
- Medicare services, 2024
- 18,744
- Medicare patients, 2024
- 1,475
- Part D claims, 2024
- 3,513
- Publications
- 5
- MIPS score, 2024
- 75
- Practice address
- 1250 South Sunset Ave, Suite 100, West Covina, CA 91790
- Practice phone
- Call (626) 960-6623
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
San Gabriel Valley Surgical Center
Surgery Center - Medicare-Certified · West Covina, California
Find Dr. Ngai's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Philip Ngai is a glaucoma specialist (ophthalmology) physician in West Covina, California
Dr. Ngai practices at San Gabriel Valley Surgical Center in West Covina, California.
Dr. Ngai's NPI, 1649614215, was assigned on April 25, 2013. Dr. Ngai graduated from UC Irvine School of Medicine in 2013. Dr. Ngai holds California license A135894.
- NPI
- 1649614215NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2466769245
- NPI enumeration date
- April 25, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 960-6623
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Philip Ngai practices at San Gabriel Valley Surgical Center in West Covina, California
Dr. Ngai's primary practice is San Gabriel Valley Surgical Center, at 1250 South Sunset Ave, Suite 100, West Covina, CA 91790. The practice phone is (626) 960-6623.
- San Gabriel Valley Surgical Center1250 South Sunset Ave, Suite 100, West Covina, CA 91790Phone(626) 960-6623
Source: Dmand AI Affiliation Data
Dr. Philip Ngai is affiliated with 5 sites of care and 1 medical group
Dr. Ngai's primary practice is San Gabriel Valley Surgical Center in West Covina, California. Dr. Ngai is also affiliated with Mills-Peninsula Medical Center. The medical group on file is UC San Diego Health. Dmand AI also links Dr. Ngai to 2 more hospitals and 1 physician office, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Philip Ngai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ngai practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Gabriel Valley Surgical Center | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Philip Ngai is one of 66 glaucoma specialist (ophthalmology) physicians in California
Glaucoma specialist is Dr. Ngai's primary specialty in the NPI Registry, under taxonomy code 207WX0009X. Dr. Ngai is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Ngai is licensed in California.
Specialties and state licenses
- Glaucoma specialist (ophthalmology), CaliforniaPrimary
Clinical focus
Dmand AI lists age-related macular degeneration, cataract, cataract surgery with lens implant, cold sores or genital herpes, conjunctivitis, eyelid inflammation, glaucoma and glaucoma surgery among the conditions Dr. Ngai treats.
Glaucoma specialist (ophthalmology) physicians near Dr. Ngai
Counts of glaucoma specialist (ophthalmology) physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Philip Ngai billed Medicare for 18,744 services in 2024
CMS data shows 18,744 Medicare services from Dr. Ngai across 29 procedure codes in 2024, for 1,475 Medicare patients. Medicare paid $1,033,877 for them.
Dr. Ngai's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 14,5982024: 11,94918%
- Office and hospital visits
- 2023: 2,9952024: 3,1716%
- Other services
- 2023: 02024: 2,699
- Surgery
- 2023: 7272024: 53327%
- Imaging
- 2023: 3792024: 3923%
Where Dr. Ngai's Medicare services took place, 2024
- In an office18,53099%
- In a facility2141%
Dr. Ngai compared with the California median for glaucoma specialist (ophthalmology) physicians, 2024
- Dr. Ngai
- California median
- Medicare services
- 18,744vs 1,06917.5 times
- Medicare patients
- 1,475vs 3813.9 times
- Part D claims
- 3,409vs 1,74495% above
Medians across 66 glaucoma specialist (ophthalmology) physicians in California with Dmand AI profiles that report each measure.
Dr. Ngai's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Ngai?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ngai and other glaucoma specialist (ophthalmology) physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Philip Ngai treated 1,475 Medicare patients in 2024, average age 76
CMS counts 1,475 Medicare patients who saw Dr. Ngai in 2024. The largest group is 65 to 74, with 630 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 31% are also on Medicaid. Their average risk score is 1.26, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ngai's median patient age at 70, with 60% women.
Dr. Ngai's Medicare patients by age, 2024
Dr. Ngai's Medicare patients by sex, 2024
- Women92463%
- Men55137%
Chronic conditions among Dr. Ngai's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis43%
- Diabetes42%
- Chronic kidney disease28%
- Ischemic heart disease26%
- Osteoporosis24%
- Heart failure18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ngai's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Philip Ngai wrote 3,513 Medicare Part D claims in 2024
In 2024, Dr. Ngai wrote 3,513 Medicare Part D claims for 734 patients. 63% of them were for generic drugs. CMS names the drug for 3,409 of them, across 27 drugs with 11 or more claims each, at $324,225 in total drug cost. In 2023, CMS named 2,959 claims across 24 drugs.
Dr. Ngai's Part D claims by kind of drug, 2024
- Generic2,205 claims63%
- Brand-name1,308 claims37%
Dr. Ngai's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Ngai's Part D claims, 2024
- Antibiotics0%15 of 3,513 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,9592024: 3,40915%
Drugs named by CMS: 27 in 2024, 24 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Philip Ngai scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Ngai for performance year 2024, reported as part of a group. Dr. Ngai accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 285 procedures of cataract surgery by Dr. Ngai, more than 89% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Where Dr. Ngai ranks in Medicare procedure volume
- Cataract surgery
- 89th percentile285 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Philip Ngai has 5 publications on record
Dmand AI links 5 papers to Dr. Ngai, published from 2018 to 2020. Dr. Ngai's most frequent co-authors are Jiun Lap Do, MD, PhD, Jeremiah P. Tao, MD and Robert N. Weinreb, MD.
Dr. Ngai's most frequent co-authors
- Jiun Lap Do, MD, PhD2 shared papers
- Jeremiah P. Tao, MD2 shared papers
- Robert N. Weinreb, MD2 shared papers
Recent publications by Dr. Ngai
Ophthalmic Plast Reconstr Surg
Medicine (Baltimore)
See who Dr. Ngai researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ngai works with, so you can find a warm path to the right glaucoma specialist (ophthalmology) physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Philip Ngai received $40,250 in industry payments from 2016 to 2025
CMS Open Payments shows 225 general payments to Dr. Ngai from 27 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 47% of the total. Sight Sciences, Inc. paid the most, $22,781.
General payments to Dr. Ngai by program year, 2016 to 2025
General payments to Dr. Ngai by kind, 2016 to 2025
- Speaker and faculty fees$19,00647%
- Consulting fees$10,05025%
- Food and beverage$9,79124%
- Travel and lodging$1,3693%
- Other$330%
Companies that paid Dr. Ngai the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Philip Ngai graduated from UC Irvine School of Medicine
Dr. Ngai graduated from UC Irvine School of Medicine in 2013.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Philip Ngai accepts plans from 9 insurance carriers
Dr. Ngai is in network with 9 carriers, including Elevance, Blue Cross Blue Shield of Michigan and LA Care. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- LA Care
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Molina
- Regence Health Plans
- CMS Medicare
- +1 more carriersWith a free account
Plan types Dr. Ngai accepts, by number of carriers
- Medicare8
- HMO5
- PPO5
- POS2
- EPO1
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Philip Ngai's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Philip Ngai
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Philip Ngai's NPI number?
Dr. Philip Ngai's NPI number is 1649614215. It was assigned on April 25, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Philip Ngai?
Dr. Philip Ngai is a glaucoma specialist (ophthalmology) physician in West Covina, California. The primary specialty in the NPI Registry is Glaucoma Specialist (Ophthalmology) Physician (taxonomy code 207WX0009X).
Where does Dr. Philip Ngai practice?
Dr. Ngai practices at 1250 South Sunset Ave, Suite 100, West Covina, CA 91790. Dr. Ngai's primary practice is San Gabriel Valley Surgical Center in West Covina, California. Dmand AI also links Dr. Ngai to 2 hospitals and 1 physician office.
What is Dr. Philip Ngai's office phone number?
The practice phone on file for Dr. Ngai is (626) 960-6623.
What is Dr. Philip Ngai's medical license number?
Dr. Ngai holds California license A135894.
Which hospitals is Dr. Philip Ngai affiliated with?
Dr. Ngai is affiliated with Mills-Peninsula Medical Center. Dmand AI links Dr. Ngai to 2 more hospitals.
What medical group is Dr. Philip Ngai part of?
Dr. Ngai is linked to UC San Diego Health.
Does Dr. Philip Ngai accept Medicare?
Yes. CMS data shows Dr. Ngai billed Medicare for 18,744 services in 2024, and Dr. Ngai accepts Medicare assignment.
What is Dr. Philip Ngai's MIPS score?
Dr. Ngai's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
How many Medicare patients does Dr. Philip Ngai see?
CMS counts 1,475 Medicare patients who saw Dr. Ngai in 2024, with an average age of 76.
Show 9 more questionsShow fewer questions
Is Dr. Philip Ngai board certified?
Yes. Dr. Ngai is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. Philip Ngai bill to Medicare?
In 2024, Dr. Ngai's most billed Medicare services were eye exam or test (92020), eye exam or test (92201) and medicare service (G2211).
Where did Dr. Philip Ngai go to medical school?
Dr. Ngai graduated from UC Irvine School of Medicine in 2013.
What drugs does Dr. Philip Ngai prescribe most?
In 2024 Medicare Part D data, Dr. Ngai's most prescribed drugs by claims were Latanoprost, Dorzolamide-Timolol and Brimonidine Tartrate.
Has Dr. Philip Ngai received payments from drug or device companies?
CMS Open Payments shows $40,250 in general payments to Dr. Ngai from 27 companies from 2016 to 2025. The largest total came from Sight Sciences, Inc.
How long has Dr. Philip Ngai been practicing?
Dr. Ngai graduated from medical school in 2013, 13 years ago.
Does Dr. Philip Ngai do research?
Dmand AI links 5 publications to Dr. Ngai, published from 2018 to 2020.
Who does Dr. Philip Ngai publish with?
Dr. Ngai's most frequent co-authors are Jiun Lap Do, MD, PhD (2 shared papers), Jeremiah P. Tao, MD (2 shared papers) and Robert N. Weinreb, MD (2 shared papers).
What insurance does Dr. Philip Ngai accept?
Dr. Ngai is in network with 9 carriers, including Elevance, Blue Cross Blue Shield of Michigan and LA Care. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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