Dr. Thomas Y Chandler , MD
Ophthalmology • Austin, TX
12221 N Mopac Expy
Austin, TX 787582401
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on February 21, 2006; this date does not establish years in practice.
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Published CMS data list 1,441 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 92014 — Established patient complete exam of visual system: 581 service units.
- 92012 — Established patient problem focused exam of visual system: 236 service units.
- 92134 — Imaging of retina: 173 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 13 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 1,045 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Latanoprost — 308 prescription fills, including refills.
- Prednisolone Acetate — 158 prescription fills, including refills.
- Timolol Maleate — 156 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 14 records in the table · Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Ophthalmology in Austin, TX (2024, 77 clinicians with data). Median for this group: 1,187. Middle half: 389 to 2,303.
Close to the middle for Medicare Part B services among clinicians listed under Ophthalmology in Texas (2024, 992 clinicians with data). Median for this group: 1,764. Middle half: 751 to 3,589.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,640 in 2020 to 1,441 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
12221 N Mopac Expy
Austin, TX 787582401
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: The Austin Diagnostic Clinic Pllc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
University Of Texas Medical School At Houston
1981
What Public CMS Data Show
Ophthalmology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
713 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $204,058 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $151,051 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
1,993 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$108,629 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $39.25 across 2 records.
By nature of payment
- Food and Beverage: $39.25 across 2 records.
Reporting-company totals
- Amgen Inc.: $39.25 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
45 years (graduated 1981)
CMS Doctors and Clinicians data list 1981 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Chandler has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Chandler as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Austin and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Ophthalmology in Austin, TX (2024, 77 clinicians with data). Median for this group: 1,187. Middle half: 389 to 2,303.
Close to the middle for clinicians listed under Ophthalmology in Texas (2024, 992 clinicians with data). Median for this group: 1,764. Middle half: 751 to 3,589.
Medicare-allowed amount
Close to the middle for clinicians listed under Ophthalmology in Austin, TX (2024, 77 clinicians with data). Median for this group: $150,330. Middle half: $62,823 to $361,105.
Close to the middle for clinicians listed under Ophthalmology in Texas (2024, 992 clinicians with data). Median for this group: $211,752. Middle half: $85,606 to $415,016.
Paid by Medicare
Close to the middle for clinicians listed under Ophthalmology in Austin, TX (2024, 77 clinicians with data). Median for this group: $114,400. Middle half: $42,587 to $260,310.
Close to the middle for clinicians listed under Ophthalmology in Texas (2024, 992 clinicians with data). Median for this group: $151,943. Middle half: $60,170 to $302,740.
Medicare Part D prescriptions
More Part D prescriptions than 75% of clinicians listed under Ophthalmology in Austin, TX (2024, 82 clinicians with data). Median for this group: 340. Middle half: 163 to 900.
Close to the middle for clinicians listed under Ophthalmology in Texas (2024, 1,065 clinicians with data). Median for this group: 905. Middle half: 327 to 2,157.
Part D drug cost
A higher Part D drug cost than 65% of clinicians listed under Ophthalmology in Austin, TX (2024, 82 clinicians with data). Median for this group: $27,857. Middle half: $4,337 to $148,087.
Close to the middle for clinicians listed under Ophthalmology in Texas (2024, 1,065 clinicians with data). Median for this group: $73,797. Middle half: $14,089 to $240,265.
112 active clinicians are listed under Ophthalmology with a practice address in Austin, TX (1,517 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Austin
0% of these 112 clinicians have the CMS telehealth indicator.
69.6% of these 112 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 12% from 1,640 in 2020 to 1,441 in 2024.
- 2020: 1,640
- 2021: 2,032
- 2022: 1,866
- 2023: 1,444
- 2024: 1,441
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Medicare-allowed amount
Medicare-allowed amount decreased 21% from $259,458 in 2020 to $204,058 in 2024.
- 2020: $259,458
- 2021: $333,949
- 2022: $292,444
- 2023: $214,141
- 2024: $204,058
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Paid by Medicare
Paid by Medicare decreased 21% from $191,064 in 2020 to $151,051 in 2024.
- 2020: $191,064
- 2021: $248,290
- 2022: $212,347
- 2023: $156,666
- 2024: $151,051
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Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 1,015 in 2020 and 1,045 in 2024.
- 2020: 1,015
- 2021: 993
- 2022: 1,006
- 2023: 958
- 2024: 1,045
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30-day fills
30-day fills stayed about the same: 1,987 in 2020 and 1,993 in 2024.
- 2020: 1,987
- 2021: 1,961
- 2022: 1,950
- 2023: 1,895
- 2024: 1,993
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Part D drug cost
Part D drug cost decreased 20% from $136,347 in 2020 to $108,629 in 2024.
- 2020: $136,347
- 2021: $111,326
- 2022: $140,260
- 2023: $156,355
- 2024: $108,629
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $93.16 in 2021 to $39.25 in 2025.
- 2021: $93.16
- 2022: $90.73
- 2023: $23.32
- 2024: $36.41
- 2025: $39.25
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $39.25.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Amgen Inc. |
Food and Beverage
In-kind items and services
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TEPEZZA | General | $25.23 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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TEPEZZA | General | $14.02 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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92014
Established patient complete exam of visual system
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581 | 492 | $359.82 | $124.94 |
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92012
Established patient problem focused exam of visual system
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236 | 157 | $301.59 | $89.55 |
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92134
Imaging of retina
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173 | 118 | $136.18 | $40.20 |
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92004
New patient complete exam of visual system
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129 | 129 | $404.91 | $148.30 |
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92083
Exam of visual field with extended testing
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70 | 65 | $248.17 | $64.10 |
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66984
Removal of cataract with insertion of prosthetic lens
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54 | 38 | $2179.63 | $511.18 |
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J0178
Injection, aflibercept, 1 mg
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50 | 11 | $2582.56 | $825.81 |
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92136
Measurement of corneal curvature and depth of eye
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41 | 40 | $137.39 | $33.96 |
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67028
Injection of drug into eye
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39 | 23 | $390.54 | $112.63 |
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92133
Imaging of optic nerve
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24 | 24 | $134.63 | $35.70 |
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92002
New patient problem focused exam of visual system
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20 | 20 | $315.60 | $85.77 |
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J7999
Compounded drug, not otherwise classified
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13 | 11 | $184.00 | $83.64 |
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67800
Removal of chronic growth of eyelid
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11 | 11 | $403.55 | $129.40 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Latanoprost | Latanoprost | 308 | 23,220 | $4,082.85 | 91 |
| Prednisolone Acetate | Prednisolone Acetate | 158 | 6,107 | $7,697.69 | 112 |
| Timolol Maleate | Timolol Maleate | 156 | 7,756 | $4,350.14 | 38 |
| Moxifloxacin | Moxifloxacin Hcl | 115 | 1,199 | $2,201.00 | 87 |
| Brimonidine Tartrate-Timolol | Brimonidine Tartrate/Timolol | 55 | 3,664 | $7,864.24 | 19 |
| Lumigan | Bimatoprost | 44 | 1,339 | $12,381.42 | — |
| Combigan | Brimonidine Tartrate/Timolol | 42 | 2,048 | $17,109.48 | — |
| Brimonidine Tartrate | Brimonidine Tartrate | 41 | 2,644 | $266.71 | 11 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 34 | 2,560 | $716.86 | — |
| Restasis | Cyclosporine | 25 | 1,650 | $32,704.37 | — |
| Cyclosporine | Cyclosporine | 24 | 2,100 | $16,103.31 | 14 |
| Travoprost | Travoprost | 20 | 1,261 | $2,938.74 | — |
| Erythromycin | Erythromycin Base | 12 | 236 | $136.68 | 11 |
| Doxycycline Hyclate | Doxycycline Hyclate | 11 | 129 | $75.98 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207W00000X
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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - OPHTHALMOLOGY
I20100701000551
TX
6800709007
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
The Austin Diagnostic Clinic Pllc
12221 N Mopac Expy, Austin, TX 787582401
Phone: 5129012530
The Austin Diagnostic Clinic Pllc
12221 N Mopac Expy, Austin, TX 787582483
Phone: 5129011111
The Austin Diagnostic Clinic Pllc
12221 N Mopac Expy, Austin, TX 787582401
Phone: 5129012530
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Ophthalmology
Doctor of Medicine (M.D.)
Optometrist
Doctor of Optometry
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 12221 N MOPAC EXPY, AUSTIN, TX 787582401 (Tel: 5129014014)
Registered at 12221 N MOPAC EXPY, AUSTIN, TX 787582401 (Tel: 5129014014)
NPI status registered as active in NPPES database
Registered at 12221 MOPAC EXPRESSWAY NORTH, AUSTIN, TX 787582483 (Tel: 5129014014)
Registered at 12221 MOPAC EXPRESSWAY NORTH, AUSTIN, TX 787582483 (Tel: 5129014014)
Recorded as THOMAS CHANDLER, MD
Ophthalmology (license number reported to NPPES: TX F9290)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Ophthalmology Specialists in Austin
- Dr. Michelle Berger, MD
- Dr. Peter Wollan, MD
- Dr. Thomas Walters, MD
- Dr. Yen Nieman, MD
- Dr. Megyn Busse, MD
- Dr. Henry Rylander, MD
Mailing Address
12221 N Mopac Expy
Austin, TX 787582401
Phone: 5129014014