Dr. Sylvian Hien Ung , OD
Optometrist โข Austin, TX
1700 S Mo Pac Expy
Austin, TX 78746
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 April 27, 2006; this date does not establish years in practice.
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Published CMS data list 13 Original Medicare Part B services in 2022.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022. Published rows only; this is not a quality measure.
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Published Part B service records, 2022:
- 92014 โ Established patient complete exam of visual system: 13 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2021 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2022). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Medicare Part B services went from 75 in 2018 to 13 in 2022.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2018โ2022.
Practice Location & Contact Primary Location
1700 S Mo Pac Expy
Austin, TX 78746
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Optometrist: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
23 people with Original Medicare in 2022
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2022.
Medicare-allowed amount
About $1,718 in 2022
The total amount Medicare approved for these services in 2022. 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 โ by Provider and Service, 2022.
Paid by Medicare
About $845 in 2022
The part of the Medicare-allowed amount that Medicare itself paid in 2022, 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 โ by Provider and Service, 2022.
Open Payments general payments, program year 2022
All general payments: $74.12 across 3 records.
By nature of payment
- Food and Beverage: $74.12 across 3 records.
Reporting-company totals
- ABBVIE INC.: $74.12 across 3 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 2022 (published June 30, 2026).
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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, CMS release of October 2, 2026; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
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, CMS release of October 2, 2026.
Compared with the same specialty in Austin and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Ung are from 2022.
258 active clinicians are listed under Optometrist with a practice address in Austin, TX (5,035 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Austin
0% of these 258 clinicians have the CMS telehealth indicator.
55.4% of these 258 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 83% from 75 in 2018 to 13 in 2022.
- 2018: 75
- 2019: 53
- 2020: 43
- 2021: 77
- 2022: 13
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Medicare-allowed amount
Medicare-allowed amount decreased 78% from $7,939 in 2018 to $1,718 in 2022.
- 2018: $7,939
- 2019: $6,780
- 2020: $5,621
- 2021: $7,901
- 2022: $1,718
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Paid by Medicare
Paid by Medicare decreased 83% from $5,118 in 2018 to $845 in 2022.
- 2018: $5,118
- 2019: $4,649
- 2020: $3,883
- 2021: $4,976
- 2022: $845
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $218.11 in 2019 to $74.12 in 2022.
- 2019: $218.11
- 2020: $55.06
- 2021: $31.54
- 2022: $74.12
Sources: CMS Medicare Physician & Other Practitioners (2022), CMS Open Payments (2022), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท 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 2022 (payments made January 1 โ December 31, 2022): fewer than 11 records totaling $74.12.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
VUITY | General | $29.60 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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VUITY | General | $23.31 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
VUITY | General | $21.21 |
Source: CMS Open Payments, program year 2022, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2021 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 โ by Provider and Service data, 2017โ2022; 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 |
|---|---|---|---|---|
|
92014
Established patient complete exam of visual system
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13 | 13 | $396.00 | $132.16 |
Source: CMS Part B by Provider and Service, 2022; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-02-23NUCC Taxonomy Code: 152W00000X
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
NUCC Taxonomy Code: 152W00000X
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
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.)
Ophthalmology
Doctor of Medicine (M.D.)
Ophthalmology
Doctor of Medicine (M.D.)
Ophthalmology
Doctor of Medicine (M.D.)
Ophthalmology - Ophthalmic Plastic and Reconstructive Surgery
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
Optometrist (license number reported to NPPES: GA OPT001741)
Optometrist (license number reported to NPPES: TX 6802TG)
Registered at 1700 S MO PAC EXPY, AUSTIN, TX 78746 (Tel: 5123277000)
Optometrist (license number reported to NPPES: GA OPT001741)
NPI status registered as active in NPPES database
Registered at 1700 S MO PAC EXPY, AUSTIN, TX 787467572 (Tel: 5123277000)
Registered at 5717 BALCONES DR, AUSTIN, TX 787314203 (Tel: 5123277000)
Recorded as SYLVIAN UNG, O.D.
Optometrist (license number reported to NPPES: TX 6802TG)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Optometrists in Austin
- Dr. Collin Tam, OD
- Dr. Aaron Wolf, OD
- Dr. Emily Simonek, OD
- Dr. W. Twelvis Matthews, OD
- Dr. Robert Soltys, OD
- Dr. Shazeen Ali, OD
Mailing Address
5717 Balcones Dr
Austin, TX 787314203
Phone: 5123277000