PHILIP NGAI M.D.
NPI 1649614215
Ophthalmology - Glaucoma Specialist in West Covina, CA

Q: What is Philip Ngai's NPI number?

The NPI number for Philip Ngai is 1649614215. It was assigned to this individual provider in the NPPES registry on April 25, 2013.

Q: What is Philip Ngai's specialty?

The primary specialty registered for this NPI is Ophthalmology, specializing in Glaucoma Specialist, with taxonomy code 207WX0009X.

Q: When was this NPI record last updated?

The NPPES record for Philip Ngai was last updated on September 19, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 25, 2013PECOS EnrolledAccepts Medicare Assignment

75/100

CMS Quality Rating

1250 S SUNSET AVE STE 205, WEST COVINA, CA 91790(626) 960-3741(877) 991-4762 Get Directions Write a Review

NPPES record last updated: September 19, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 19, 2018, Jun 13, 2018, Jun 28, 2017 (3 updates tracked since 2017).

On this page

About Philip Ngai M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

PHILIP NGAI M.D. (NPI 1649614215) is an individual glaucoma specialist in West Covina, California, licensed in California (A135894) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (2013).

NPPES Registry Identity

NPI1649614215

Entity TypeIndividualMale

Primary Taxonomy207WX0009X

Provider Legal NamePHILIP NGAICredential: M.D.

Location Address1250 S SUNSET AVE STE 205West Covina, CA 91790

Mailing Address1250 S Sunset Ave Ste 205West Covina, CA 91790-3963 · (626) 960-3741 · Fax (877) 991-4762

Phone(626) 960-3741

Fax(877) 991-4762

Sole ProprietorNo

Medical School CMSUniversity Of California, Irvine, California College Of MedicineGraduated 2013

Enumeration DateApril 25, 2013

Last NPPES UpdateSeptember 19, 20183 updates tracked since enumeration

✔ NPI 1649614215 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOphthalmology · Glaucoma SpecialistAllopathic & Osteopathic Physicians

Taxonomy Code207WX0009X

License✔ Licensed in CA · A135894

Definition

An ophthalmologist who specializes in the treatment of glaucoma and other disorders related to increased intraocular pressure and optic nerve damage. This specialty involves the medical and surgical treatment of these conditions.

Also ListedOphthalmologyTaxonomy 207W00000X · License A135894 (CA)

1250 S SUNSET AVE STE 205, West Covina, CA 91790

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Philip Ngai M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2466769245

PECOS Enrollment IDI20170725001052

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Philip Ngai reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Philip Ngai MD, Incorporated

Same address

Glaucoma Specialist

1250 S SUNSET AVE STE 205
West Covina, CA 91790

Reassigned Medicare billing, California enrollment

NPI 1609369693 (626) 960-3741

Regents Of The University Of California

101 mi

Ophthalmology

200 W ARBOR DR
San Diego, CA 92103

Reassigned Medicare billing, California enrollment
129 clinicians in this Medicare group

NPI 1699877621 (800) 926-8273

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 28

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Exam of the internal drainage system of eye 92020

This is a procedure where your doctor examines the eye's internal drainage system, essential for maintaining eye pressure. They use specialized tools to check for blockages or damage that might lead to conditions like glaucoma. It's non-invasive and painless.

2,988 services1,282 patients

Extended exam of the back part of the eye with retinal drawing 92201

This procedure involves a detailed examination of the back part of your eye, including the retina. It helps identify any abnormalities or issues. A retinal drawing is made to record findings. It's non-invasive and crucial for maintaining eye health.

2,979 services1,393 patients

Imaging of retina 92134

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

2,054 services1,233 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

1,903 services984 patients

Exam of visual field with extended testing 92083

An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.

1,663 services887 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

973 services619 patients

Imaging of optic nerve 92133

Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).

820 services648 patients

Ultrasound scan of cornea to determine thickness 76514

An ultrasound scan of the cornea is a non-invasive procedure that uses sound waves to measure the thickness of your cornea. This helps in diagnosing certain eye conditions and planning treatments. No discomfort or pain is typically experienced.

381 services361 patients

Measurement of corneal curvature and depth of eye 92136

This procedure measures the shape and depth of your eye, specifically the cornea, the clear front surface. It helps in diagnosing conditions, planning for surgeries, or fitting contact lenses. It's non-invasive and painless.

336 services123 patients

Extended exam of the back part of the eye with optic nerve drawing 92202

This procedure involves a detailed examination of the back part of your eye, focusing on the optic nerve, a crucial component for vision. A drawing or map of the optic nerve is created to help track any changes over time. This can help detect eye diseases early.

291 services230 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

219 services219 patients

Photography of the retina 92250

Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.

206 services185 patients

Exam to measure eye deviation and range of motion 92060

This is an eye exam that checks for any misalignment in your eyes, also known as deviation. It also assesses the movement range of your eyes. The procedure is painless and helps in detecting conditions like strabismus or other vision issues.

174 services79 patients

Ct scan of cornea 92025

A CT scan of the cornea is a non-invasive imaging test that uses X-rays to capture detailed pictures of your eye's cornea. It helps in diagnosing diseases or damage, planning for surgery, or evaluating the results of a treatment. It's a safe and painless procedure.

163 services149 patients

Closure of tear duct opening using plug 68761

Closure of the tear duct opening using a plug is a procedure to address excessive tear production. A small device is inserted into the tear duct to block it, reducing tear flow and relieving symptoms. This is a safe, reversible process, often performed in-office.

147 services51 patients

Established patient complete exam of visual system 92014

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

138 services125 patients

Complex removal of cataract with insertion of prosthetic lens 66982

This procedure involves removing a cloudy lens (cataract) from your eye and replacing it with a clear, artificial lens. It helps restore vision that has been affected by the cataract. The operation is usually done under local anesthesia.

106 services65 patients

Multiple measurements of eye fluid pressure over an extended time period 92100

This procedure involves recording the pressure inside your eyes at different times throughout the day. By tracking these changes, it can help detect conditions like glaucoma early, which can prevent vision loss. It's painless and non-invasive.

105 services68 patients

Removal of recurring cataract in lens capsule using a laser 66821

This procedure, known as YAG laser capsulotomy, treats cloudiness in the lens capsule following cataract surgery. A laser is used to create a small hole in the cloudy capsule, allowing light to pass through and restore clear vision. It's a quick, painless procedure.

87 services67 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

76 services76 patients

Dilation of fluid outflow drainage within eye 66174

Dilation to improve eye fluid flow is a process where eye drops are used to widen or dilate your pupils. This allows more fluid to flow out of the eye, reducing pressure and helping to prevent or treat conditions like glaucoma.

47 services29 patients

Complex extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye 66989

This procedure involves removing a cloudy lens (cataract) from your eye through a larger incision, replacing it with an artificial one. A drainage device is also inserted in the front part of your eye to manage fluid levels, helping maintain eye health.

41 services25 patients

Removal of eyelashes using forceps 67820

The removal of eyelashes using forceps is a simple procedure where a medical professional gently extracts unwanted or problematic eyelashes with a specialized tool. This is often done to alleviate discomfort or to treat conditions like trichiasis, where eyelashes grow inward.

32 services22 patients

Photography of content of eyes 92285

Photography of the content of eyes, also known as ocular photography, captures detailed images of different parts of the eye. It helps identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. The process is non-invasive and painless.

32 services27 patients

Laser repair to improve eye fluid flow 65855

Laser repair to improve eye fluid flow is a procedure aimed at treating glaucoma. A laser is used to create a small hole in the eye's drainage system, allowing fluid to flow out more easily. This helps to lower the pressure inside the eye, reducing the risk of vision loss.

30 services15 patients

Creation of eye fluid drainage tracts in iris using a laser, per session 66761

This procedure uses a laser to create small drainage tracts in the iris, the colored part of your eye. This helps excess fluid escape, reducing pressure in the eye that can cause glaucoma. It's performed in sessions.

23 services13 patients

Removal of cataract with insertion of prosthetic lens 66984

This is a procedure where a cloudy lens in your eye, known as a cataract, is removed. After removal, a clear artificial lens is inserted. This helps to restore your vision, enabling you to see clearly again.

20 services15 patients

1d and 2d ultrasound scan of eye tissue and structures 76510

A 1D and 2D ultrasound scan of the eye is a non-invasive process that uses sound waves to create images of the eye's inner structures. This helps in detecting abnormalities or issues in the eye tissue. The procedure is safe, quick, and painless.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91790 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

75/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PETER T CHEN M.D.

Ophthalmology

1250 S SUNSET AVE STE 205
WEST COVINA, CA 91790

Los Angeles County (626) 960-3741

PHILIP NGAI MD, INCORPORATED

Ophthalmology (Glaucoma Specialist)

1250 S SUNSET AVE STE 205
WEST COVINA, CA 91790

Los Angeles County (626) 960-3741

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Philip Ngai's NPI number?

The NPI number for Philip Ngai is 1649614215. It was assigned to this individual provider in the NPPES registry on April 25, 2013.

Where is Philip Ngai located?

Philip Ngai practices at 1250 S Sunset Ave Ste 205, West Covina, CA 91790. The listed phone number is (626) 960-3741.

What is Philip Ngai's specialty?

The primary specialty registered for this NPI is Ophthalmology, specializing in Glaucoma Specialist, with taxonomy code 207WX0009X.

Is Philip Ngai enrolled in Medicare?

Yes. Philip Ngai is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Philip Ngai's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Philip Ngai reassigns Medicare benefits to 2 organizations: Philip Ngai MD, Incorporated (West Covina, CA) and Regents Of The University Of California (San Diego, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Philip Ngai's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Philip Ngai accept?

Health plans from Providence Health Plan list Philip Ngai as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Philip Ngai was last updated on September 19, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.