2026 NPPES data Ophthalmology Physician NPI 1487819256 M.D.
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NANETTE DE LEON, M.D.

Ophthalmology Physician in SAN JUAN, Puerto Rico. 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
7K
Medicare Part D claims · 987 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
60%
generic claims · 40% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.8K
14 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: NANETTE DE LEON, M.D. is a Ophthalmology Physician ([object Object]) practicing in SAN JUAN, Puerto Rico with a Medicare Part D prescribing footprint of 7K claims across 987 beneficiaries — 40% brand-name prescribing . Industry payments of $1.8K across 14 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: NANETTE DE LEON, M.D. filed 6,896 Medicare Part D claims in 2023 across SAN JUAN, Puerto Rico. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

NANETTE DE LEON, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

NANETTE DE LEON, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 07/22/2008

NPI 1487819256

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

6,896 386% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

Specialty distribution in Puerto Rico

How Ophthalmology Physician compares to other specialties among Puerto Rico providers

Puerto Rico providers

Ophthalmology Physician share within Puerto Rico

1. Ophthalmology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Ophthalmology Physician share within Puerto Rico

Specialty board-certification context

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

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

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

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

NANETTE DE LEON, M.D. is a Ophthalmology Physician provider practicing in SAN JUAN, Puerto Rico, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1487819256. 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.

NANETTE DE LEON, M.D. appears in the CMS NPPES registry as a Ophthalmology Physician provider holding M.D. credentials at SAN JUAN HEALTH CENTER SUITE 701, SAN JUAN, PR, 00907, with a listed phone of (939) 545-8402. NPI 1487819256 was issued on 07/22/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DE LEON 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 6,896 prescription claims written by this provider, covering 987 Medicare beneficiaries and totaling roughly $585K in drug spend, split 40% brand-name and 60% 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.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

SAN JUAN HEALTH CENTER SUITE 701
SAN JUAN, PR 00907

Provider Details

NPI 1487819256
Specialty Ophthalmology Physician
Credentials M.D.
Gender Female
NPI Issued 07/22/2008

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 NANETTE DE LEON, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.8K

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.

Brand vs generic prescribing mix · Above average

NANETTE DE LEON, M.D. — brand share 40.0%
Specialty average (est.)

40% brand-name claims vs 60% generic, on 6,896 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.

6,896
Total Claims
$585K
Total Drug Cost
987
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,276
Total Day Supply
208,450
Brand vs Generic
40% brand / 60% generic
Brand Drug Cost
$467K
Generic Drug Cost
$119K

Patient Demographics

Average Patient Age
74.5 years
Avg HCC Risk Score
1.46
Gender Split
61% female / 39% male
Age Distribution
<65: 45, 65-74: 468, 75-84: 371, 85+: 103

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
1,830
Prednisolone Acetate
739
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
564
Lumigan
Bimatoprost
559
Timolol Maleate
547
Ketorolac Tromethamine
514
Ofloxacin
482
Alphagan P
Brimonidine Tartrate
296
Combigan
Brimonidine Tartrate/Timolol
242
Brimonidine Tartrate
206

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

Ophthalmology Physician Overview

How NANETTE DE LEON, M.D. fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

NANETTE DE LEON, M.D.'s 6,896 claims are above the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Puerto Rico

Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as DE LEON.

Compare Ophthalmology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is NANETTE DE LEON, M.D.'s specialty?
NANETTE DE LEON, M.D. specializes in Ophthalmology Physician and practices in SAN JUAN, Puerto Rico. Credentials: M.D..
How much does NANETTE DE LEON, M.D. prescribe under Medicare Part D?
In 2023, NANETTE DE LEON, M.D. wrote 6,896 Medicare Part D claims totaling $585K in drug costs for 987 beneficiaries.
Where is NANETTE DE LEON, M.D. located?
NANETTE DE LEON, M.D. is located at SAN JUAN HEALTH CENTER SUITE 701, SAN JUAN, PR, 00907. Phone: (939) 545-8402.
What is NANETTE DE LEON, M.D.'s NPI number?
NANETTE DE LEON, M.D.'s National Provider Identifier (NPI) is 1487819256, issued on 07/22/2008.
Does NANETTE DE LEON, M.D. prescribe more brand-name or generic drugs?
NANETTE DE LEON, M.D.'s prescribing is 40% brand-name and 60% generic drugs by claim count, with $467K in brand drug costs.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does NANETTE DE LEON, M.D. prescribe most often?
Based on 2023 Medicare Part D data, NANETTE DE LEON, M.D.'s most frequently prescribed drugs include Latanoprost, Prednisolone Acetate, Dorzolamide-Timolol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NANETTE DE LEON, M.D. accept Medicare?
NANETTE DE LEON, M.D. appears in CMS Medicare data with 6,896 Part D claims and 987 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NANETTE DE LEON, M.D.'s credentials?
NANETTE DE LEON, M.D.'s NPI is 1487819256 with credentials M.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