2026 NPPES data Corneal and Contact Management Optometrist NPI 1245433176 O.D.
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TRANG HUYNH, O.D.

Corneal and Contact Management Optometrist in TOMBALL, Texas. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
37
Medicare Part D claims · Corneal and Contact Management Optometrist avg: 235
Generic prescribing
46%
generic claims · 54% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$153.14
2 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

TRANG HUYNH, O.D. filed 37 Medicare Part D claims in 2023 as a Corneal and Contact Management Optometrist in TOMBALL, Texas, prescribing 46% generic.

37
Part D claims, 2023
46%
generic prescribing
$153.14
industry payments (Sunshine Act)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

TRANG HUYNH, O.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

37 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about TRANG HUYNH, O.D.?

Quality data not reported

NPI registry status

Active

Issued 06/07/2007

NPI 1245433176

Primary specialty

Corneal and Contact Management Optometrist

Niche

1,549 US NPIs in this specialty

Medicare Part D claims

37 84% vs specialty avg

2023 prescription claims

Specialty avg: 235

Specialty distribution in Texas

How Corneal and Contact Management Optometrist compares to other specialties among Texas providers

Texas providers

Corneal and Contact Management Optometrist share within Texas

1. Corneal and Contact Management Optometrist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Corneal and Contact Management Optometrist share within Texas

Specialty board-certification context

Estimated specialty board-certified rate — Corneal and Contact Management Optometrist (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Corneal and Contact Management Optometrist ABMS/AOA estimate

Est. board-certified rate (Corneal and Contact Management Optometrist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Corneal and Contact Management Optometrist) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

TRANG HUYNH, O.D. appears in the CMS NPPES registry as a Corneal and Contact Management Optometrist provider holding O.D. credentials at 27650 STATE HIGHWAY 249 STE A, TOMBALL, TX, 77375, with a listed phone of (281) 357-5868. NPI 1245433176 was issued on 06/07/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HUYNH most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 37 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $11K in drug spend, split 54% brand-name and 46% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Corneal and Contact Management Optometrist is a narrow specialty nationwide, with 1,549 enrolled providers across 52 states and an average of 235 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

27650 STATE HIGHWAY 249 STE A
TOMBALL, TX 77375

Provider Details

NPI 1245433176
Specialty Corneal and Contact Management Optometrist
Credentials O.D.
Gender Female
NPI Issued 06/07/2007

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for TRANG HUYNH, O.D.. Source: openpaymentsdata.cms.gov.

Total received

$153

Largest payer

CooperVision Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

License & disciplinary context — Texas TMB 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~77K Texas medical licensees in 2023 — they are NOT specific to TRANG HUYNH, O.D.. To verify TRANG HUYNH, O.D.'s current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases

TMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Brand-heavy

TRANG HUYNH, O.D. — brand share 54.0%
Specialty average (est.)

54% brand-name claims vs 46% generic, on 37 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

37
Total Claims
$11K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
83
Total Day Supply
2,414
Brand vs Generic
54% brand / 46% generic
Brand Drug Cost
$10K
Generic Drug Cost
$731

Patient Demographics

Average Patient Age
75.9 years
Avg HCC Risk Score
0.62

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Latanoprost
24

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Corneal and Contact Management Optometrist Overview

How TRANG HUYNH, O.D. fits within the Corneal and Contact Management Optometrist landscape nationally.

1,549
Corneal and Contact Management Optometrist Providers in US
52
States with Corneal and Contact Management Optometrist
235
Avg Claims per Provider

TRANG HUYNH, O.D.'s 37 claims are below the specialty average of 235.

Nearby Corneal and Contact Management Optometrist Providers in Texas

Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as HUYNH.

Compare Corneal and Contact Management Optometrist nationally: see state-by-state distribution →

Frequently Asked Questions

What is TRANG HUYNH, O.D.'s specialty?
TRANG HUYNH, O.D. specializes in Corneal and Contact Management Optometrist and practices in TOMBALL, Texas. Credentials: O.D..
How much does TRANG HUYNH, O.D. prescribe under Medicare Part D?
In 2023, TRANG HUYNH, O.D. wrote 37 Medicare Part D claims totaling $11K in drug costs for N/A beneficiaries.
Where is TRANG HUYNH, O.D. located?
TRANG HUYNH, O.D. is located at 27650 STATE HIGHWAY 249 STE A, TOMBALL, TX, 77375. Phone: (281) 357-5868.
What is TRANG HUYNH, O.D.'s NPI number?
TRANG HUYNH, O.D.'s National Provider Identifier (NPI) is 1245433176, issued on 06/07/2007.
Does TRANG HUYNH, O.D. prescribe more brand-name or generic drugs?
TRANG HUYNH, O.D.'s prescribing is 54% brand-name and 46% generic drugs by claim count, with $10K in brand drug costs.
How many Corneal and Contact Management Optometrist providers are there in the US?
There are 1,549 Corneal and Contact Management Optometrist providers across 52 states in the US. The average Corneal and Contact Management Optometrist provider writes 235 Medicare Part D claims per year.
What drugs does TRANG HUYNH, O.D. prescribe most often?
Based on 2023 Medicare Part D data, TRANG HUYNH, O.D.'s most frequently prescribed drugs include Latanoprost. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TRANG HUYNH, O.D. accept Medicare?
TRANG HUYNH, O.D. appears in CMS Medicare data with 37 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TRANG HUYNH, O.D.'s credentials?
TRANG HUYNH, O.D.'s NPI is 1245433176 with credentials O.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology