NPI registry status
Active
2026 NPPES data Retina Specialist (Ophthalmology) Physician NPI 1912533803 MD
Verify on CMS → Maria Castanos Toral, MD
Retina Specialist (Ophthalmology) Physician in Sarasota, Florida.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 913 in Retina Specialist (Ophthalmology) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
956
Medicare Part D claims · 217 beneficiaries · Retina Specialist (Ophthalmology) Physician avg: 558
Generic prescribing
64%
generic claims · 36% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Maria Castanos Toral, MD filed 956 Medicare Part D claims in 2023 as a Retina Specialist (Ophthalmology) Physician in Sarasota, Florida, prescribing 64% generic.
- 956
- Part D claims, 2023
- 64%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Maria Castanos Toral, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
956 Top 25% higher than 75% of 1,370,886 prescribers
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
✓
Board certification likely (heuristic, not verified)
Maria Castanos Toral, MD 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).
What does the federal data show about Maria Castanos Toral, MD?
Quality data not reportedPrimary specialty
Retina Specialist (Ophthalmology) Physician
Medicare Part D claims
956 71% vs specialty avg
Specialty distribution in Florida
How Retina Specialist (Ophthalmology) Physician compares to other specialties among Florida providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Retina Specialist (Ophthalmology) Physician. Verify directly:
How MIPS and board certification work
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).
Maria Castanos Toral, MD appears in the CMS NPPES registry as a Retina Specialist (Ophthalmology) Physician provider holding MD credentials at 2401 UNIVERSITY PKWY STE 205, Sarasota, FL, 34243, with a listed phone of (941) 351-1200. NPI 1912533803 was issued on 03/23/2020.
Medicare Part D records for calendar year 2023 show 956 prescription claims written by this provider, covering 217 Medicare beneficiaries and totaling roughly $88K in drug spend, split 36% brand-name and 64% generic by claim count.
Retina Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 913 enrolled providers across 48 states and an average of 558 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
Provider Details
| NPI | 1912533803 |
|---|---|
| Specialty | Retina Specialist (Ophthalmology) Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 03/23/2020 |
Hospital and facility affiliations
Facilities where Maria Castanos Toral, MD 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.
Retina Care Consultants PA
Sarasota, FL
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Florida FLDOH 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 ~75K Florida medical licensees in 2023 - they are NOT specific to Maria Castanos Toral, MD. To verify Maria Castanos Toral, MD's current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases
FLDOH 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 Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Above average
Maria Castanos Toral, MD - brand share 36.0%
Retina Specialist (Ophthalmology) Physician average
36% brand-name claims vs 64% generic, on 956 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.
956
Total Claims
$88K
Total Drug Cost
217
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,350
- Total Day Supply
- 36,396
- Brand vs Generic
- 36% brand / 64% generic
- Brand Drug Cost
- $68K
- Generic Drug Cost
- $20K
Patient Demographics
- Average Patient Age
- 72.3 years
- Avg HCC Risk Score
- 1.54
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 31, 65-74: 100, 75-84: 62, 85+: 24
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Maria Castanos Toral, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
193 claims
- Dorzolamide-Timolol
Dorzolamide-Timolol
143 claims
- Prednisolone Acetate
Prednisolone Acetate
90 claims
- Brimonidine Tartrate
Brimonidine Tartrate
83 claims
- Rhopressa 67
Rhopressa
67 claims
- Dorzolamide Hcl 33
Dorzolamide Hcl
33 claims
- Lumigan 30
Lumigan
30 claims
- Timolol Maleate 29
Timolol Maleate
29 claims
| Drug | Claims |
|---|---|
| Latanoprost | 193 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 143 |
| Prednisolone Acetate | 90 |
| Brimonidine Tartrate | 83 |
| Rhopressa Netarsudil Mesylate | 67 |
| Dorzolamide Hcl | 33 |
| Lumigan Bimatoprost | 30 |
| Timolol Maleate | 29 |
| Erythromycin Erythromycin Base | 26 |
| Moxifloxacin Moxifloxacin Hcl | 25 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Retina Specialist (Ophthalmology) Physician in FL →
All providers in Florida →
Compare specialties →
Retina Specialist (Ophthalmology) Physician Overview
How Maria Castanos Toral, MD fits within the Retina Specialist (Ophthalmology) Physician landscape nationally.
913
Retina Specialist (Ophthalmology) Physician Providers in US
48
States with Retina Specialist (Ophthalmology) Physician
558
Avg Claims per Provider
Maria Castanos Toral, MD's 956 claims are above the specialty average of 558.
Nearby Retina Specialist (Ophthalmology) Physician Providers in Florida
Other clinicians with the same primary specialty enrolled in Florida, drawn from the same CMS NPPES roster as Castanos Toral.
Dr. Maura Abraham Marin
MD
Miami, FL
Dr. Yamini Attiku
MBBS, MD
Fort Myers, FL
Dr. Thomas Barnard
MD
Lake Mary, FL
Dr. Adam Berger
MD
Winter Haven, FL
Dr. Todd Berger
MD
St Petersburg, FL
Compare Retina Specialist (Ophthalmology) Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Florida medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Retina Specialist (Ophthalmology) Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Maria Castanos Toral, MD's specialty? ▼
Maria Castanos Toral, MD specializes in Retina Specialist (Ophthalmology) Physician and practices in Sarasota, Florida. Credentials: MD.
How much does Maria Castanos Toral, MD prescribe under Medicare Part D? ▼
In 2023, Maria Castanos Toral, MD wrote 956 Medicare Part D claims totaling $88K in drug costs for 217 beneficiaries.
Where is Maria Castanos Toral, MD located? ▼
Maria Castanos Toral, MD is located at 2401 UNIVERSITY PKWY STE 205, Sarasota, FL, 34243. Phone: (941) 351-1200.
What is Maria Castanos Toral, MD's NPI number? ▼
Maria Castanos Toral, MD's National Provider Identifier (NPI) is 1912533803, issued on 03/23/2020.
Does Maria Castanos Toral, MD prescribe more brand-name or generic drugs? ▼
Maria Castanos Toral, MD's prescribing is 36% brand-name and 64% generic drugs by claim count, with $68K in brand drug costs.
How many Retina Specialist (Ophthalmology) Physician providers are there in the US? ▼
There are 913 Retina Specialist (Ophthalmology) Physician providers across 48 states in the US. The average Retina Specialist (Ophthalmology) Physician provider writes 558 Medicare Part D claims per year.
What drugs does Maria Castanos Toral, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Maria Castanos Toral, MD's most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Prednisolone Acetate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Maria Castanos Toral, MD accept Medicare? ▼
Maria Castanos Toral, MD appears in CMS Medicare data with 956 Part D claims and 217 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Maria Castanos Toral, MD's credentials? ▼
Maria Castanos Toral, MD's NPI is 1912533803 with credentials MD. 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
View source datasets and methodology notes
- 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
Compiled from official public sources by the PlainDoctor editorial team.