Are you Joseph J. Chen, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 4353 Park Terrace Dr Ste 150, Westlake Village, CA 91361
About Dr. Chen
Based in Westlake Village, CA, Joseph J. Chen, M.D. is listed in the NPI registry under ophthalmology. Joseph graduated from Baylor College of Medicine in 2009. Medicare claims data shows Joseph provided 3,540 services to 2,669 patients. The services billed most often include established patient problem focused exam of visual system, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and exam of visual field with extended testing. NPI 1639496953 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (805) 987-5300
- Email not available
Practice Locations
4353 PARK TERRACE DR STE 150
Westlake Village, CA 91361
Conditions Commonly Evaluated or Treated
Within Ophthalmology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Cornea and external eye
Eyelid and tear drainage
Refractive and focusing
- Astigmatism
- Eye misalignment (strabismus)
- Farsightedness
- Lazy eye (amblyopia)
- Nearsightedness
- Presbyopia
Retina and vitreous
Eye injuries
Inflammation, neurologic, and orbit
Retina & vitreous
Procedures & services
Most searched procedures
Examination and imaging
Cataract and lens
Corneal procedures
Eye diagnostics
Eye injuries
Eyelid surgery
Eyelid, tear duct, and muscle
Glaucoma
- Glaucoma drainage-device implantation
- Laser peripheral iridotomy
- Minimally invasive glaucoma surgery
- Selective laser trabeculoplasty
Laser eye surgery
Laser procedures
Laser vision correction
Refractive surgery
Tear duct & Orbit
Procedures Most Often Billed to Medicare
3,540 services · 2,669 patients · 22 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
160 | More often than most peers in Ophthalmology |
| Extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye | Procedure | 66991 |
26 | As often as other peers in Ophthalmology |
| Destruction of lens tissue using laser | Procedure | 66710 |
19 | As often as other peers in Ophthalmology |
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
17 | As often as other peers in Ophthalmology |
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
15 | As often as other peers in Ophthalmology |
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
88 | More often than most peers in Ophthalmology |
| Established patient problem focused exam of visual system | Treatment | 92012 |
651 | More often than most peers in Ophthalmology |
| Exam of visual field with extended testing | Treatment | 92083 |
393 | More than most peers in Ophthalmology |
| Imaging of optic nerve | Treatment | 92133 |
288 | More often than most peers in Ophthalmology |
| Measurement of corneal curvature and depth of eye | Treatment | 92136 |
193 | More often than most peers in Ophthalmology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other eye doctors at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
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.
More connections — 26 related providers in 4 groups
Other eye doctors in Westlake Village 2
Same specialty, same city.
Trained at Baylor College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2009 at Baylor College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of cataract with insertion of prosthetic lens 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Joseph J. Chen specialize in?
Joseph J. Chen is an eye doctor in Westlake Village, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where is Joseph J. Chen located?
Joseph J. Chen is listed at 4353 Park Terrace Dr Ste 150, Westlake Village, CA 91361. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Joseph J. Chen's phone number?
The number on file is (805) 987-5300. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Joseph J. Chen?
Joseph J. Chen's National Provider Identifier is 1639496953. 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
Where did Joseph J. Chen train?
Joseph J. Chen attended Baylor College of Medicine, graduating in 2009. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Joseph J. Chen have?
Joseph J. Chen has 17 years experience. Calculated from a graduation year of 2009, reported in the CMS National Downloadable File.
CMS public data
What does Joseph J. Chen do most often?
According to Medicare billing data, Joseph J. Chen performs procedures including removal of cataract with insertion of prosthetic lens, extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye and destruction of lens tissue using laser; reads or performs imaging such as ultrasound scan of cornea to determine thickness; provides treatments such as established patient problem focused exam of visual system and exam of visual field with extended testing, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Joseph J. Chen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Joseph J. Chen. If this is you, claiming it is free.
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