2026 NPPES data Optometrist NPI 1821401886 O.D.
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FABIAN CORONA, O.D.

Optometrist in SOUTH GATE, California. 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
27
Medicare Part D claims · 12 beneficiaries · Optometrist avg: 257
Generic prescribing
22%
generic claims · 78% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$830.69
11 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

FABIAN CORONA, O.D. filed 27 Medicare Part D claims in 2023 as a Optometrist in SOUTH GATE, California, prescribing 22% generic.

27
Part D claims, 2023
22%
generic prescribing
$830.69
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.

FABIAN CORONA, O.D.'s Medicare Part D volume vs every U.S. prescriber

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

27 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 FABIAN CORONA, O.D.?

Quality data not reported

NPI registry status

Active

Issued 06/07/2014

NPI 1821401886

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

27 89% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in California

How Optometrist compares to other specialties among California providers

California providers

Optometrist share within California

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

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).

FABIAN CORONA, O.D. appears in the CMS NPPES registry as a Optometrist provider holding O.D. credentials at 3329 TWEEDY BLVD, SOUTH GATE, CA, 90280, with a listed phone of (323) 566-6183. NPI 1821401886 was issued on 06/07/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CORONA 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 27 prescription claims written by this provider, covering 12 Medicare beneficiaries and totaling roughly $12K in drug spend, split 78% brand-name and 22% 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

3329 TWEEDY BLVD
SOUTH GATE, CA 90280

Provider Details

NPI 1821401886
Specialty Optometrist
Credentials O.D.
Gender Male
NPI Issued 06/07/2014

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 FABIAN CORONA, O.D.. Source: openpaymentsdata.cms.gov.

Total received

$831

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 — California MBC 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 ~150K California medical licensees in 2023 — they are NOT specific to FABIAN CORONA, O.D.. To verify FABIAN CORONA, O.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Brand-heavy

FABIAN CORONA, O.D. — brand share 78.0%
Specialty average (est.)

78% brand-name claims vs 22% generic, on 27 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.

27
Total Claims
$12K
Total Drug Cost
12
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
32
Total Day Supply
886
Brand vs Generic
78% brand / 22% generic
Brand Drug Cost
$12K

Patient Demographics

Average Patient Age
77.8 years
Avg HCC Risk Score
1.60
Age Distribution
<65: 0, 65-74: N/A, 75-84: N/A, 85+: N/A

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
11

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

Optometrist Overview

How FABIAN CORONA, O.D. fits within the Optometrist landscape nationally.

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

FABIAN CORONA, O.D.'s 27 claims are below the specialty average of 257.

Nearby Optometrist Providers in California

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

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

Frequently Asked Questions

What is FABIAN CORONA, O.D.'s specialty?
FABIAN CORONA, O.D. specializes in Optometrist and practices in SOUTH GATE, California. Credentials: O.D..
How much does FABIAN CORONA, O.D. prescribe under Medicare Part D?
In 2023, FABIAN CORONA, O.D. wrote 27 Medicare Part D claims totaling $12K in drug costs for 12 beneficiaries.
Where is FABIAN CORONA, O.D. located?
FABIAN CORONA, O.D. is located at 3329 TWEEDY BLVD, SOUTH GATE, CA, 90280. Phone: (323) 566-6183.
What is FABIAN CORONA, O.D.'s NPI number?
FABIAN CORONA, O.D.'s National Provider Identifier (NPI) is 1821401886, issued on 06/07/2014.
Does FABIAN CORONA, O.D. prescribe more brand-name or generic drugs?
FABIAN CORONA, O.D.'s prescribing is 78% brand-name and 22% generic drugs by claim count, with $12K 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 FABIAN CORONA, O.D. prescribe most often?
Based on 2023 Medicare Part D data, FABIAN CORONA, O.D.'s most frequently prescribed drugs include Restasis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does FABIAN CORONA, O.D. accept Medicare?
FABIAN CORONA, O.D. appears in CMS Medicare data with 27 Part D claims and 12 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify FABIAN CORONA, O.D.'s credentials?
FABIAN CORONA, O.D.'s NPI is 1821401886 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