Are you Clark S. Tsai, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 2700 Grant St, Ste. 100, Concord, CA 94520
About Dr. Tsai
Clark S. Tsai, M.D. practices ophthalmology in Concord, CA. Clark is a 1988 graduate of Albert Einstein College of Medicine of Yeshiva University. Medicare claims data shows Clark provided 12,448 services to 8,889 patients. The services billed most often include established patient complete exam of visual system, multiple measurements of eye fluid pressure over an extended time period, and photography of the retina. The provider's National Provider Identifier (NPI) is 1720096829.
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
- (925) 689-7744
- Email not available
Practice Locations
2700 GRANT ST STE. 100
Concord, CA 94520
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
Eye injury and cancer
Inflammation, neurologic, and orbit
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
Retina & vitreous
Procedures & services
Cataract and lens
- Cataract surgery with lens implant
- Laser-assisted cataract surgery
- Intraocular lens exchange
- YAG laser capsulotomy
Cornea and refractive
Emergency and minor
- Corneal rust-ring removal
- Removal of an eye foreign body
- Repair of an eye or eyelid laceration
- Repair of ruptured globe
Examination and imaging
- Eye ultrasound
- Slit-lamp examination
- Visual-field testing
- Corneal topography
- Fluorescein angiography
Eyelid, tear duct, and muscle
- Chalazion removal
- Ectropion repair
- Eyelid surgery
- Tear-duct probing
- Drooping-eyelid repair
- Entropion repair
- Eye-muscle surgery
- Tear-duct bypass surgery
Glaucoma
- Cyclophotocoagulation
- Trabeculectomy
- Glaucoma drainage-device implantation
- Laser peripheral iridotomy
- Minimally invasive glaucoma surgery
- Selective laser trabeculoplasty
Retina
Most searched procedures
Corneal procedures
Eye diagnostics
Eye injuries
Eyelid surgery
Laser eye surgery
Laser procedures
Laser vision correction
Refractive surgery
Tear duct & Orbit
Procedures Most Often Billed to Medicare
12,448 services · 8,889 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Closure of tear duct opening using plug | Procedure | 68761 |
545 | More than most peers in Ophthalmology |
| Repair tear duct opening by heat, tying, or laser surgery | Procedure | 68760 |
173 | More than most peers in Ophthalmology |
| Injection of drug into eye | Procedure | 67028 |
172 | Less often than most peers in Ophthalmology |
| Dilation of fluid outflow drainage within eye | Procedure | 66174 |
114 | More than most peers in Ophthalmology |
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
97 | As often as other peers in Ophthalmology |
| Complex removal of cataract with insertion of prosthetic lens | Procedure | 66982 |
38 | More often than most peers in Ophthalmology |
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
766 | More than most peers in Ophthalmology |
| Ultrasound scan of eye using water bath method | Imaging | 76513 |
756 | More than most peers in Ophthalmology |
| Ultrasound scan to determine eye length and lens power | Imaging | 76519 |
176 | More often than most peers in Ophthalmology |
| 2d ultrasound scan of eye tissue and structures | Imaging | 76512 |
39 | 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.
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 eye doctors in Concord 8
Same specialty, same city.
Trained at Albert Einstein College of Medicine of Yeshiva University 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1988 at Albert Einstein College of Medicine of Yeshiva University 8
Providers who graduated from the same medical school in the same year.
Also performs Closure of tear duct opening using plug 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Clark S. Tsai?
Clark S. Tsai is an eye doctor in Concord, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
What is Clark S. Tsai's address?
Clark S. Tsai is listed at 2700 Grant St Ste. 100, Concord, CA 94520. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Clark S. Tsai?
The number on file is (925) 689-7744. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Clark S. Tsai?
Clark S. Tsai's National Provider Identifier is 1720096829. 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 Clark S. Tsai train?
Clark S. Tsai attended Albert Einstein College of Medicine of Yeshiva University, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Clark S. Tsai have?
Clark S. Tsai has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What procedures does Clark S. Tsai perform?
According to Medicare billing data, Clark S. Tsai performs procedures including closure of tear duct opening using plug, repair tear duct opening by heat, tying, or laser surgery and injection of drug into eye; reads or performs imaging such as ultrasound scan of cornea to determine thickness and ultrasound scan of eye using water bath method; provides treatments such as established patient complete exam of visual system and multiple measurements of eye fluid pressure over an extended time period. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Clark S. Tsai's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Clark S. Tsai. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.