Physician Profile
Unclaimed ProfileAbout NG
John Daniel Ng, MD practises ophthalmology in Portland, OR. John is a 1988 graduate of George Washington University School of Medicine.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What is Dr. Ng's specialty?
Dr. Ng is an ophthalmology in Portland, OR. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPHTHALMOLOGY”.
NPI registry
Where can I find Dr. Ng?
Dr. Ng is listed at 3375 SW TERWILLIGER BLVD, Portland, OR 97239. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Ng?
The number on file is (503) 494-3000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Ng's NPI number?
Dr. Ng's National Provider Identifier is 1235181108. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Ng's medical education?
Dr. Ng attended George Washington University School of Medicine, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Ng been practising?
Dr. Ng has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Ng known for?
According to Medicare billing data, Dr. Ng performs procedures including extensive repair of turning-outward eyelid defect; provides treatments such as photography of content of eyes and established patient problem focused exam of visual system, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Ng confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Ng. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (503) 494-3000
- Email not available
Practice Locations
3375 SW TERWILLIGER BLVD
Portland, OR 97239
Procedures Most Often Billed to Medicare
307 services · 278 patients · 7 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Extensive repair of turning-outward eyelid defect | Procedure | 67917 |
13 |
| Photography of content of eyes | Treatment | 92285 |
100 |
| Established patient problem focused exam of visual system | Treatment | 92012 |
83 |
| New patient problem focused exam of visual system | Treatment | 92002 |
39 |
| Exam of visual field with limited testing | Treatment | 92081 |
22 |
| Established patient problem focused exam of visual system | Treatment | 92012 |
22 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
28 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other ophthalmology specialists at this location 8
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other ophthalmology specialists in Portland 6
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at George Washington University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1988 at George Washington University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Extensive repair of turning-outward eyelid defect 8
Providers in OR who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.