DR. CLARK S TSAI M.D.
NPI 1720096829
Ophthalmology in Concord, CA

Q: What is Clark Tsai's NPI number?

The NPI number for Clark Tsai is 1720096829. It was assigned to this individual provider in the NPPES registry on August 4, 2006.

Q: What is Clark Tsai's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Q: When was this NPI record last updated?

The NPPES record for Clark Tsai was last updated on August 17, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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 August 04, 2006PECOS EnrolledAccepts Medicare Assignment

100/100

CMS Quality Rating

2700 GRANT ST, STE. 100, CONCORD, CA 94520(925) 689-7744(925) 689-7748 Get Directions Write a Review

NPPES record last updated: August 17, 2015. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Dr. Clark S Tsai M.d. NPPES

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

DR. CLARK S TSAI M.D. (NPI 1720096829) is an individual ophthalmology provider in Concord, California, licensed in California (G76192) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (1988).

NPPES Registry Identity

NPI1720096829

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameDR. CLARK S TSAICredential: M.D.

Location Address2700 GRANT ST, STE. 100Concord, CA 94520-2266

Mailing Address2225 Port Chicago HwyConcord, CA 94520-2051 · (925) 689-7744 · Fax (925) 689-7748

Phone(925) 689-7744

Fax(925) 689-7748

Sole ProprietorNo

Medical School CMSAlbert Einstein College Of Medicine Of Yeshiva UniversityGraduated 1988

Enumeration DateAugust 4, 2006

Last NPPES UpdateAugust 17, 2015

✔ NPI 1720096829 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in CA · G76192

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

2700 GRANT ST, Concord, CA 94520

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Other Identifiers 7

Medicare PINZZZ32492ZCA

Medicare ID-Type UnspecifiedZZZ32492ZCA

Medicare UPINF57943CA

Medicare UPINY27763CA

Medicare PIN00G761921CA

Medicaid00G761922CA

Medicare NSC5415470001CA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Louisiana, Blue Cross Blue Shield of Wyoming, BlueCross BlueShield of Tennessee.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Clark S Tsai 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 ID4688625528

PECOS Enrollment IDI20050209001039

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.

Areas of Expertise CMS Part B claims 34

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.

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.

2,437 services889 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.

1,033 services832 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.

894 services815 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.

879 services565 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.

840 services816 patients

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.

830 services816 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.

766 services751 patients

Ultrasound scan of eye using water bath method 76513

An ultrasound scan of the eye using the water bath method is a non-invasive procedure. It involves placing the eye in a small container of water to create clear images of the eye's internal structures. This assists in diagnosing and monitoring various eye conditions.

756 services743 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).

579 services551 patients

Evaluation of eye adaptation to light and dark with interpretation and report 92284

This procedure checks how your eyes adjust to different light conditions. In a dimly lit room, your eyes are first exposed to bright light. Then, the lights are turned off to see how quickly your eyes adapt to darkness. This helps identify any potential vision problems.

547 services543 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.

545 services131 patients

Established patient problem focused exam of visual system 92012

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

431 services155 patients

Exam of visual field with intermediate testing 92082

An exam of the visual field with intermediate testing is a procedure that checks your peripheral (side) vision. It helps to identify blind spots which could be a sign of eye diseases. This non-invasive test is painless and quick.

270 services268 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.

228 services172 patients

Ultrasound scan to determine eye length and lens power 76519

An ultrasound scan for the eye is a safe, non-invasive procedure. It uses sound waves to create images of your eye's structure. This helps determine the length of your eye and the power of your lens, which is crucial for diagnosing eye conditions and planning surgeries.

176 services126 patients

Injection, bevacizumab, 10 mg J9035

Bevacizumab is a medication given through an injection. It's designed to prevent the growth of new blood vessels that cancer cells need to grow and spread. The 10 mg dose refers to the amount of the drug in the injection.

176 services24 patients

Repair tear duct opening by heat, tying, or laser surgery 68760

This procedure involves fixing a blocked tear duct. A specialist may use heat, sutures, or laser surgery to open up the tear duct and allow tears to drain normally. This can alleviate symptoms such as excessive tearing or infection. It's a common and safe procedure.

173 services43 patients

Imaging of front third of eye using a special microscope 92286

This procedure involves capturing detailed images of the front part of your eye using a specialized microscope. It helps in identifying any eye abnormalities or issues, improving the accuracy of diagnosis and treatment planning.

173 services169 patients

Injection of drug into eye 67028

An injection into the eye is a procedure where a medication is delivered directly into your eye to treat various conditions. A local anesthetic is applied to numb the eye, ensuring minimal discomfort. The drug helps manage diseases like macular degeneration or diabetic retinopathy.

172 services24 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 services154 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.

114 services84 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.

97 services75 patients

New patient complete exam of visual system 92004

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

92 services92 patients

2d ultrasound scan of eye tissue and structures 76512

A 2D ultrasound scan of eye tissue and structures is a non-invasive procedure that uses sound waves to create images of your eye. It helps doctors to examine your eye's internal structures, detect abnormalities, and plan for treatments if needed.

39 services19 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.

38 services32 patients

Emergency department visit with moderate level of medical decision making 99284

An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.

38 services38 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.

37 services28 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.

36 services32 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.

28 services14 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.

25 services13 patients

Measurement of retinal and optic nerve function 92273

This procedure checks the health of your eyes, specifically the retina and optic nerve. These parts help in visual interpretation. The test involves non-invasive techniques to measure your eye's response to light and assess its functioning.

16 services16 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.

14 services13 patients

Removal of foreign body in cornea using slit lamp 65222

This procedure involves the use of a slit lamp, a special microscope, to locate and remove a foreign object from the cornea, the clear front surface of your eye. It's a safe and effective way to clear unwanted particles and restore eye health.

12 services11 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.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94520 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

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

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.

100/100

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

Individually scored

Quality

100

Improvement Activities

Reported Quality Measures

Diabetic Macular Edema - Loss of Visual Acuity

100%23 patients

Documentation of Current Medications in the Medical Record

100%95 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 20

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

DR. ERIC PAUL HOENIG M.D.

Hospitalist

2700 GRANT ST, SUITE 200
CONCORD, CA 94520

Contra Costa County (925) 674-2609

CONTRA COSTA ENT MEDICAL ASSOC

Otolaryngology

2700 GRANT ST, SUITE 104
CONCORD, CA 94520

Contra Costa County (925) 685-7400

DR. ARSEEN E SOLIMAN M.D.

Internal Medicine

2700 GRANT ST, SUITE 200
CONCORD, CA 94520

Contra Costa County (925) 677-0500

ARRHYTHMIA SPECIALISTS INC

Internal Medicine (Cardiovascular Disease)

2700 GRANT ST, 319
CONCORD, CA 94520

Contra Costa County (925) 935-2070

DR. JULIE ANNE CAHILL M.D.

Internal Medicine

2700 GRANT ST, SUITE 200
CONCORD, CA 94520

Contra Costa County (925) 677-0500

LISA QUINONES MD

Family Medicine

2700 GRANT ST, STE 200
CONCORD, CA 94520

Contra Costa County (925) 677-0510

PHILIP JAMES GOMEZ JR. P.T.

Physical Therapist

2700 GRANT ST
CONCORD, CA 94520

Contra Costa County (925) 673-2125

NORCAL UROLOGY MEDICAL GROUP

Urology

2700 GRANT ST, SUITE 316
CONCORD, CA 94520

Contra Costa County (925) 825-8100

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 Clark Tsai's NPI number?

The NPI number for Clark Tsai is 1720096829. It was assigned to this individual provider in the NPPES registry on August 4, 2006.

Where is Clark Tsai located?

Clark Tsai practices at 2700 Grant St Ste. 100, Concord, CA 94520. The listed phone number is (925) 689-7744.

What is Clark Tsai's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Clark Tsai enrolled in Medicare?

Yes. Clark Tsai 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.

What insurance does Clark Tsai accept?

Health plans from Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Louisiana and BlueCross BlueShield of Tennessee list Clark Tsai 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 Clark Tsai was last updated on August 17, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.