2026 NPPES data Ophthalmology Physician NPI 1669411336 M.D.
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CARMEN SANTOS GONZALEZ, 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
2K
Medicare Part D claims · 262 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
62%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$433.94
4 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: CARMEN SANTOS GONZALEZ, M.D. is a Ophthalmology Physician ([object Object]) practicing in SAN JUAN, Puerto Rico with a Medicare Part D prescribing footprint of 2K claims across 262 beneficiaries — 38% brand-name prescribing . Industry payments of $433.94 across 4 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: CARMEN SANTOS GONZALEZ, M.D. filed 2,117 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 certification likely (heuristic — not verified)

CARMEN SANTOS GONZALEZ, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

CARMEN SANTOS GONZALEZ, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 06/06/2006

NPI 1669411336

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

2,117 49% 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).

CARMEN SANTOS GONZALEZ, 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: 1669411336. 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.

CARMEN SANTOS GONZALEZ, M.D. appears in the CMS NPPES registry as a Ophthalmology Physician provider holding M.D. credentials at 269 AVE PINERO, SAN JUAN, PR, 00927, with a listed phone of (787) 765-9470. NPI 1669411336 was issued on 06/06/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SANTOS GONZALEZ 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 2,117 prescription claims written by this provider, covering 262 Medicare beneficiaries and totaling roughly $606K in drug spend, split 38% brand-name and 62% 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

269 AVE PINERO
SAN JUAN, PR 00927

Provider Details

NPI 1669411336
Specialty Ophthalmology Physician
Credentials M.D.
Gender Female
NPI Issued 06/06/2006

Hospital and facility affiliations

Facilities where CARMEN SANTOS GONZALEZ, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

RECINTO DE CIENCIAS MEDICAS
RIO PIEDRAS, PR

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 CARMEN SANTOS GONZALEZ, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$434

Largest payer

Mallinckrodt Hospital Products 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.

Brand vs generic prescribing mix · Above average

CARMEN SANTOS GONZALEZ, M.D. — brand share 38.0%
Specialty average (est.)

38% brand-name claims vs 62% generic, on 2,117 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.

2,117
Total Claims
$606K
Total Drug Cost
262
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,664
Total Day Supply
72,222
Brand vs Generic
38% brand / 62% generic
Brand Drug Cost
$553K
Generic Drug Cost
$52K
Antibiotic Claims
17

Patient Demographics

Average Patient Age
73.7 years
Avg HCC Risk Score
1.57
Gender Split
73% female / 27% male
Age Distribution
<65: 34, 65-74: 106, 75-84: 80, 85+: 42

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Prednisolone Acetate
395
Brimonidine Tartrate
164
Timolol Maleate
159
Prednisone
129
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
101
Fluorometholone
101
Difluprednate
91
Acyclovir
86
Lumigan
Bimatoprost
75
Moxifloxacin
Moxifloxacin Hcl
68

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

Ophthalmology Physician Overview

How CARMEN SANTOS GONZALEZ, 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

CARMEN SANTOS GONZALEZ, M.D.'s 2,117 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 SANTOS GONZALEZ.

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

Frequently Asked Questions

What is CARMEN SANTOS GONZALEZ, M.D.'s specialty?
CARMEN SANTOS GONZALEZ, M.D. specializes in Ophthalmology Physician and practices in SAN JUAN, Puerto Rico. Credentials: M.D..
How much does CARMEN SANTOS GONZALEZ, M.D. prescribe under Medicare Part D?
In 2023, CARMEN SANTOS GONZALEZ, M.D. wrote 2,117 Medicare Part D claims totaling $606K in drug costs for 262 beneficiaries.
Where is CARMEN SANTOS GONZALEZ, M.D. located?
CARMEN SANTOS GONZALEZ, M.D. is located at 269 AVE PINERO, SAN JUAN, PR, 00927. Phone: (787) 765-9470.
What is CARMEN SANTOS GONZALEZ, M.D.'s NPI number?
CARMEN SANTOS GONZALEZ, M.D.'s National Provider Identifier (NPI) is 1669411336, issued on 06/06/2006.
Does CARMEN SANTOS GONZALEZ, M.D. prescribe more brand-name or generic drugs?
CARMEN SANTOS GONZALEZ, M.D.'s prescribing is 38% brand-name and 62% generic drugs by claim count, with $553K 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 CARMEN SANTOS GONZALEZ, M.D. prescribe most often?
Based on 2023 Medicare Part D data, CARMEN SANTOS GONZALEZ, M.D.'s most frequently prescribed drugs include Prednisolone Acetate, Brimonidine Tartrate, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CARMEN SANTOS GONZALEZ, M.D. accept Medicare?
CARMEN SANTOS GONZALEZ, M.D. appears in CMS Medicare data with 2,117 Part D claims and 262 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CARMEN SANTOS GONZALEZ, M.D.'s credentials?
CARMEN SANTOS GONZALEZ, M.D.'s NPI is 1669411336 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