2026 NPPES data Optometrist NPI 1477649895 O.D.
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SANG AN, O.D.

Optometrist in CARROLLTON, 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
448
Medicare Part D claims · 168 beneficiaries · Optometrist avg: 257
Generic prescribing
35%
generic claims · 65% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$51.1
3 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: SANG AN, O.D. is a Optometrist ([object Object]) practicing in CARROLLTON, Texas with a Medicare Part D prescribing footprint of 448 claims across 168 beneficiaries — 65% brand-name prescribing . Industry payments of $51.1 across 3 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: SANG AN, O.D. filed 448 Medicare Part D claims in 2023 across CARROLLTON, Texas. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

SANG AN, O.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 10/04/2006

NPI 1477649895

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

448 74% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in Texas

How Optometrist compares to other specialties among Texas providers

Texas providers

Optometrist share within Texas

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

Specialty board-certification context

Estimated specialty board-certified rate — Optometrist (ABMS / AOA reference)

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

Est. board-certified rate (Optometrist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (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).

SANG AN, O.D. is a Optometrist provider practicing in CARROLLTON, Texas, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: O.D.. NPI: 1477649895. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

SANG AN, O.D. appears in the CMS NPPES registry as a Optometrist provider holding O.D. credentials at 2625 OLD DENTON RD, CARROLLTON, TX, 75007, with a listed phone of (972) 242-1652. NPI 1477649895 was issued on 10/04/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AN 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 448 prescription claims written by this provider, covering 168 Medicare beneficiaries and totaling roughly $164K in drug spend, split 65% brand-name and 35% 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.

Optometrist is a high-volume specialty nationwide, with 60,463 enrolled providers across 56 states and an average of 257 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

2625 OLD DENTON RD
CARROLLTON, TX 75007

Provider Details

NPI 1477649895
Specialty Optometrist
Credentials O.D.
Gender Male
NPI Issued 10/04/2006

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 SANG AN, O.D.. Source: openpaymentsdata.cms.gov.

Total received

$51

Largest payer

Alcon Vision LLC

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 SANG AN, O.D.. To verify SANG AN, 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

SANG AN, O.D. — brand share 65.0%
Specialty average (est.)

65% brand-name claims vs 35% generic, on 448 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.

448
Total Claims
$164K
Total Drug Cost
168
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
604
Total Day Supply
17,059
Brand vs Generic
65% brand / 35% generic
Brand Drug Cost
$154K
Generic Drug Cost
$10K

Patient Demographics

Average Patient Age
74.1 years
Avg HCC Risk Score
1.20
Gender Split
61% female / 39% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Restasis
Cyclosporine
118
Latanoprost
96
Xiidra
Lifitegrast
38
Cyclosporine
26
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
22
Tobramycin-Dexamethasone
Tobramycin/Dexamethasone
19
Fluorometholone
17
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
14
Loteprednol Etabonate
13
Flarex
Fluorometholone Acetate
12

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

Optometrist Overview

How SANG AN, O.D. fits within the Optometrist landscape nationally.

60,463
Optometrist Providers in US
56
States with Optometrist
257
Avg Claims per Provider

SANG AN, O.D.'s 448 claims are above the specialty average of 257.

Nearby Optometrist Providers in Texas

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

Compare Optometrist nationally: see state-by-state distribution →

Frequently Asked Questions

What is SANG AN, O.D.'s specialty?
SANG AN, O.D. specializes in Optometrist and practices in CARROLLTON, Texas. Credentials: O.D..
How much does SANG AN, O.D. prescribe under Medicare Part D?
In 2023, SANG AN, O.D. wrote 448 Medicare Part D claims totaling $164K in drug costs for 168 beneficiaries.
Where is SANG AN, O.D. located?
SANG AN, O.D. is located at 2625 OLD DENTON RD, CARROLLTON, TX, 75007. Phone: (972) 242-1652.
What is SANG AN, O.D.'s NPI number?
SANG AN, O.D.'s National Provider Identifier (NPI) is 1477649895, issued on 10/04/2006.
Does SANG AN, O.D. prescribe more brand-name or generic drugs?
SANG AN, O.D.'s prescribing is 65% brand-name and 35% generic drugs by claim count, with $154K in brand drug costs.
How many Optometrist providers are there in the US?
There are 60,463 Optometrist providers across 56 states in the US. The average Optometrist provider writes 257 Medicare Part D claims per year.
What drugs does SANG AN, O.D. prescribe most often?
Based on 2023 Medicare Part D data, SANG AN, O.D.'s most frequently prescribed drugs include Restasis, Latanoprost, Xiidra. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SANG AN, O.D. accept Medicare?
SANG AN, O.D. appears in CMS Medicare data with 448 Part D claims and 168 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SANG AN, O.D.'s credentials?
SANG AN, O.D.'s NPI is 1477649895 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