2026 NPPES data Ophthalmology Physician NPI 1679682603 M.D.
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LUIS ALCARAZ, M.D.

Ophthalmology Physician in AGUADILLA, 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
4K
Medicare Part D claims · 782 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
50%
generic claims · 50% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: LUIS ALCARAZ, M.D. is a Ophthalmology Physician ([object Object]) practicing in AGUADILLA, Puerto Rico with a Medicare Part D prescribing footprint of 4K claims across 782 beneficiaries — 50% brand-name prescribing .

What stands out: LUIS ALCARAZ, M.D. filed 3,622 Medicare Part D claims in 2023 across AGUADILLA, Puerto Rico. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

LUIS ALCARAZ, 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).

LUIS ALCARAZ, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 08/30/2006

NPI 1679682603

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

3,622 155% 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).

LUIS ALCARAZ, M.D. is a Ophthalmology Physician provider practicing in AGUADILLA, Puerto Rico, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1679682603. 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.

LUIS ALCARAZ, M.D. appears in the CMS NPPES registry as a Ophthalmology Physician provider holding M.D. credentials at 23 BETANCES, AGUADILLA, PR, 00603, with a listed phone of (787) 882-4322. NPI 1679682603 was issued on 08/30/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ALCARAZ 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 3,622 prescription claims written by this provider, covering 782 Medicare beneficiaries and totaling roughly $316K in drug spend, split 50% brand-name and 50% generic by claim count, with an opioid prescribing rate of 0.6%. 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

23 BETANCES
AGUADILLA, PR 00603

Provider Details

NPI 1679682603
Specialty Ophthalmology Physician
Credentials M.D.
Gender Male
NPI Issued 08/30/2006

Brand vs generic prescribing mix · Brand-heavy

LUIS ALCARAZ, M.D. — brand share 50.0%
Specialty average (est.)

50% brand-name claims vs 50% generic, on 3,622 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.

3,622
Total Claims
$316K
Total Drug Cost
782
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,281
Total Day Supply
103,162
Brand vs Generic
50% brand / 50% generic
Brand Drug Cost
$279K
Generic Drug Cost
$36K
Opioid Claims
22 (0.6% rate)
Antibiotic Claims
29

Patient Demographics

Average Patient Age
74.4 years
Avg HCC Risk Score
1.95
Gender Split
55% female / 45% male
Age Distribution
<65: 63, 65-74: 325, 75-84: 317, 85+: 77

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
725
Prednisolone Acetate
451
Fluorometholone
302
Lumigan
Bimatoprost
275
Ketorolac Tromethamine
241
Polymyxin B Sul-Trimethoprim
Polymyxin B Sulf/Trimethoprim
235
Levobunolol Hcl
185
Alphagan P
Brimonidine Tartrate
184
Erythromycin
Erythromycin Base
141
Restasis
Cyclosporine
139

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

Ophthalmology Physician Overview

How LUIS ALCARAZ, 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

LUIS ALCARAZ, M.D.'s 3,622 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 ALCARAZ.

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

Frequently Asked Questions

What is LUIS ALCARAZ, M.D.'s specialty?
LUIS ALCARAZ, M.D. specializes in Ophthalmology Physician and practices in AGUADILLA, Puerto Rico. Credentials: M.D..
How much does LUIS ALCARAZ, M.D. prescribe under Medicare Part D?
In 2023, LUIS ALCARAZ, M.D. wrote 3,622 Medicare Part D claims totaling $316K in drug costs for 782 beneficiaries.
Where is LUIS ALCARAZ, M.D. located?
LUIS ALCARAZ, M.D. is located at 23 BETANCES, AGUADILLA, PR, 00603. Phone: (787) 882-4322.
What is LUIS ALCARAZ, M.D.'s NPI number?
LUIS ALCARAZ, M.D.'s National Provider Identifier (NPI) is 1679682603, issued on 08/30/2006.
Does LUIS ALCARAZ, M.D. prescribe more brand-name or generic drugs?
LUIS ALCARAZ, M.D.'s prescribing is 50% brand-name and 50% generic drugs by claim count, with $279K in brand drug costs.
Does LUIS ALCARAZ, M.D. prescribe opioids?
Yes, LUIS ALCARAZ, M.D. had 22 opioid claims in 2023 with an opioid prescribing rate of 0.6%.
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 LUIS ALCARAZ, M.D. prescribe most often?
Based on 2023 Medicare Part D data, LUIS ALCARAZ, M.D.'s most frequently prescribed drugs include Latanoprost, Prednisolone Acetate, Fluorometholone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LUIS ALCARAZ, M.D. accept Medicare?
LUIS ALCARAZ, M.D. appears in CMS Medicare data with 3,622 Part D claims and 782 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LUIS ALCARAZ, M.D.'s credentials?
LUIS ALCARAZ, M.D.'s NPI is 1679682603 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