TOM S CHANG MD
NPI 1609848969
Ophthalmology - Retina Specialist in Pasadena, CA

Q: What is Tom Chang's NPI number?

The NPI number for Tom Chang is 1609848969. It was assigned to this individual provider in the NPPES registry on February 2, 2006.

Q: What is Tom Chang's specialty?

The primary specialty registered for this NPI is Ophthalmology, specializing in Retina Specialist, with taxonomy code 207WX0107X.

Q: When was this NPI record last updated?

The NPPES record for Tom Chang was last updated on August 7, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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 February 02, 2006PECOS EnrolledAccepts Medicare Assignment

75/100

CMS Quality Rating

100 E CALIFORNIA BLVD, PASADENA, CA 91105(626) 568-8838(626) 583-8838 Get Directions Write a Review

NPPES record last updated: August 7, 2020. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 7, 2020, Mar 19, 2020, Mar 13, 2019 and 1 more (4 updates tracked since 2017).

On this page

About Tom S Chang Md NPPES

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

TOM S CHANG MD (NPI 1609848969) is an individual retina specialist in Pasadena, California, licensed in California (A69909) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1988).

NPPES Registry Identity

NPI1609848969

Entity TypeIndividualMale

Primary Taxonomy207WX0107X

Provider Legal NameTOM S CHANGCredential: MD

Location Address100 E CALIFORNIA BLVDPasadena, CA 91105-3205

Mailing Address100 E California BlvdPasadena, CA 91105-3205 · (626) 568-8838 · Fax (626) 583-8838

Phone(626) 568-8838

Fax(626) 583-8838

Sole ProprietorNo

Medical School CMSOtherGraduated 1988

Enumeration DateFebruary 2, 2006

Last NPPES UpdateAugust 7, 20204 updates tracked since enumeration

NPPES CertifiedAugust 7, 2020

✔ NPI 1609848969 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOphthalmology · Retina SpecialistAllopathic & Osteopathic Physicians

Taxonomy Code207WX0107X

License✔ Licensed in CA · A69909

Definition

An ophthalmologist who specializes in the diagnosis and treatment of vitreoretinal diseases.

Also ListedOphthalmologyTaxonomy 207W00000X · License A69909 (CA)

100 E CALIFORNIA BLVD, Pasadena, CA 91105

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Other Identifiers 3

Other00A699090Blue Cross

Medicaid00A699090CA

Medicaid1609848969CA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma 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

Tom S 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 ID7113931056

PECOS Enrollment IDI20060201000549

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 20

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.

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.

2,341 services546 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.

1,733 services222 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.

430 services332 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.

374 services245 patients

Exam of retinal blood vessels using a special camera after injection of a dye 92235

This procedure, known as a fluorescein angiography, involves taking images of the back of your eye. A dye is injected into your arm that travels to your eye, highlighting the blood vessels in your retina. This helps identify any abnormalities.

222 services186 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.

222 services186 patients

Injection, ranibizumab, 0.1 mg J2778

Ranibizumab is a medication given via injection to treat certain eye conditions like age-related macular degeneration. It works by slowing vision loss and in some cases, improving vision by blocking abnormal blood vessel growth in the eye.

176 services16 patients

Injection, aflibercept, 1 mg J0178

Aflibercept injection is a treatment for certain eye conditions that affect vision. It works by blocking abnormal blood vessel growth and leakage in the eye, which can cause vision loss. The medication is administered directly into the eye by a healthcare professional.

156 services14 patients

Compounded drug, not otherwise classified J7999

A compounded drug is a personalized medication created to meet unique patient needs. If you can't take standard drugs due to allergies or need a specific dosage not commercially available, a pharmacist can mix ingredients to make a drug specifically for you.

91 services54 patients

Destruction of leaking blood vessels of retina using laser 67228

This procedure involves using a laser to treat leaking blood vessels in the retina, the part of the eye responsible for vision. The laser seals off these vessels, preventing further leakage and helping to preserve sight.

80 services34 patients

Exam of retinal blood vessels and blood vessels between the white part of eye and retina using a special camera after injection of a dye 92242

This procedure involves a special camera capturing images of the eye's blood vessels. A dye is injected into your body, which travels to the eye's vessels, highlighting them in the photos. This helps identify any abnormalities in the retina and surrounding areas.

58 services50 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.

50 services50 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.

39 services34 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.

30 services25 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.

26 services21 patients

New patient problem focused exam of visual system 92002

A new patient problem-focused exam of the visual system is a basic evaluation of your eyes and vision. It includes checking your eye movements, visual acuity, and general eye health. It helps detect any potential issues early for timely treatment.

19 services19 patients

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.

18 services16 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).

16 services14 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.

13 services13 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.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91105 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

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

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.

75/100

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

Scored as part of a group practice

Other Providers at the Same Location NPPES 13

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

JESSICA WAI CHUNG YOUNG OD

Optometrist