DR. SIDNEY TAN CHANG MD
NPI 1790888006
Ophthalmology in San Diego, CA

Q: What is Sidney Chang's NPI number?

The NPI number for Sidney Chang is 1790888006. It was assigned to this individual provider in the NPPES registry on September 6, 2006.

Q: What is Sidney Chang'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 Sidney Chang was last updated on July 16, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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 September 06, 2006PECOS EnrolledAccepts Medicare Assignment

51.3/100

CMS Quality Rating

200 W ARBOR DR, REGENTS OF THE UNIVERSITY OF CALIFORNIA, SAN DIEGO, CA 92103(858) 534-6290 Get Directions Write a Review

NPPES record last updated: July 16, 2013. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Sidney Tan Chang Md NPPES

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

DR. SIDNEY TAN CHANG MD (NPI 1790888006) is an individual ophthalmology provider in San Diego, California, licensed in California (A125489) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of Js Weill Medical College, Cornell University (2004).

NPPES Registry Identity

NPI1790888006

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameDR. SIDNEY TAN CHANGCredential: MD

Location Address200 W ARBOR DR, REGENTS OF THE UNIVERSITY OF CALIFORNIASan Diego, CA 92103-9000

Mailing Address200 W Arbor Drive, Regents Of The University Of CaliforniaSan Diego, CA 92103-1350 · (858) 534-6290

Phone(858) 534-6290

Sole ProprietorNo

Medical School CMSJs Weill Medical College, Cornell UniversityGraduated 2004

Enumeration DateSeptember 6, 2006

Last NPPES UpdateJuly 16, 2013

✔ NPI 1790888006 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

Licenses✔ Licensed in CA · A125489✔ Licensed in MO · 2008017344✔ Licensed in HI · MD-15590✔ Licensed in MD · D74915

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.

200 W ARBOR DR, San Diego, CA 92103

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Other Identifiers 1

Medicare PIN269887YMD2MD

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and more.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. Sidney Tan Chang Md 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 ID3678649225

PECOS Enrollment IDI20130315000270

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 18

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 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.

632 services564 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.

549 services362 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.

445 services271 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

239 services178 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).

227 services219 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.

217 services217 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.

183 services181 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

168 services140 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.

152 services135 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.

85 services83 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.

60 services58 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.

37 services30 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.

37 services37 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.

28 services28 patients

Removal of recurring cataract in lens capsule using a laser 66821

26 services26 patients

Extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye 66991

This is a two-part eye procedure. First, a cloudy lens (cataract) is removed from its outer layer and replaced with an artificial lens to improve vision. Second, a drainage device is inserted into the front part of the eye to manage fluid levels, preventing pressure build-up.

17 services13 patients

Insertion of initial aqueous fluid drainage device into eye 0449T

This procedure involves placing a small device into your eye to help drain fluid. It's often used for glaucoma management. The device reduces pressure in the eye, helping to prevent vision loss. It's done under anesthesia for your comfort.

14 services11 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.

13 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92103 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

$140.22 typical visit price

range $62.10 – $184.71

Typical copayment $35.05 (range $15.52 – $46.17)

Most-billed visit code 99204

Established Patient

$76.87 typical visit price

range $20.62 – $151.42

Typical copayment $19.21 (range $5.15 – $37.85)

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.

51.3/100

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

Scored as part of a group practice

Quality

100

Promoting Interoperability

Improvement Activities

Cost

21.02

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Frames, purchases V2020

Other-Vision, Hearing, and Speech Services · category OC000N

4 suppliers37 claims37 services$46.80 avg. paid by Medicare

Spherocylinder, bifocal, plano to plus or minus 4.00d sphere, .12 to 2.00d cylinder, per lens V2203

Other-Vision, Hearing, and Speech Services · category OC000N

4 suppliers23 claims43 services$54.54 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

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