NPI registry status
Active
2026 NPPES data Legal Medicine NPI 1336120708 MD
Verify on CMS → Guillermo Alonso, MD
Legal Medicine in Miami, 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 1,065 in Legal Medicine, 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
5K
Medicare Part D claims · 107 beneficiaries · Legal Medicine avg: 3K
Generic prescribing
83%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$625.88
8 payments · CMS Open Payments (Sunshine Act)
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
Guillermo Alonso, MD filed 4,736 Medicare Part D claims in 2023 as a Legal Medicine in Miami, Florida, prescribing 83% generic.
- 5K
- Part D claims, 2023
- 83%
- generic prescribing
- $625.88
- 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.
Guillermo Alonso, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
4,736 Top 7% higher than 93% 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
What does the federal data show about Guillermo Alonso, MD?
Quality data not reportedPrimary specialty
Legal Medicine
Medicare Part D claims
4,736 68% vs specialty avg
Specialty distribution in Florida
How Legal Medicine 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 Legal Medicine. 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).
Guillermo Alonso, MD appears in the CMS NPPES registry as a Legal Medicine provider holding MD credentials at 8000 W FLAGLER ST STE 206, Miami, FL, 33144, with a listed phone of (786) 703-1620. NPI 1336120708 was issued on 11/10/2005.
Medicare Part D records for calendar year 2023 show 4,736 prescription claims written by this provider, covering 107 Medicare beneficiaries and totaling roughly $317K in drug spend, split 16% brand-name and 83% generic by claim count.
Legal Medicine is a narrow specialty nationwide, with 1,065 enrolled providers across 51 states and an average of 2,821 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 | 1336120708 |
|---|---|
| Specialty | Legal Medicine |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 11/10/2005 |
Hospital and facility affiliations
Facilities where Guillermo Alonso, 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.
G And G Medical Center Inc
Miami, 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).
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 Guillermo Alonso, MD. Source: openpaymentsdata.cms.gov.
Total received
$626
Largest payer
Teva Pharmaceuticals USA, 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 - 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 Guillermo Alonso, MD. To verify Guillermo Alonso, 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 · Typical
Guillermo Alonso, MD - brand share 16.0%
Legal Medicine average
16% brand-name claims vs 83% generic, on 4,736 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.
4,736
Total Claims
$317K
Total Drug Cost
107
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,983
- Total Day Supply
- 132,897
- Brand vs Generic
- 16% brand / 83% generic
- Brand Drug Cost
- $225K
- Generic Drug Cost
- $91K
- Antibiotic Claims
- 67
Patient Demographics
- Average Patient Age
- 83.7 years
- Avg HCC Risk Score
- 2.56
- Gender Split
- 67% female / 33% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Guillermo Alonso, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
254 claims
- Losartan Potassium
Losartan Potassium
221 claims
- Amlodipine Besylate
Amlodipine Besylate
185 claims
- Pantoprazole Sodium
Pantoprazole Sodium
152 claims
- Donepezil Hcl
Donepezil Hcl
143 claims
- Lactulose
Lactulose
143 claims
- Levothyroxine Sodium
Levothyroxine Sodium
130 claims
- Metoprolol Tartrate
Metoprolol Tartrate
126 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 254 |
| Losartan Potassium | 221 |
| Amlodipine Besylate | 185 |
| Pantoprazole Sodium | 152 |
| Donepezil Hcl | 143 |
| Lactulose | 143 |
| Levothyroxine Sodium | 130 |
| Metoprolol Tartrate | 126 |
| Silver Sulfadiazine | 126 |
| Montelukast Sodium | 117 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Legal Medicine Overview
How Guillermo Alonso, MD fits within the Legal Medicine landscape nationally.
1,065
Legal Medicine Providers in US
51
States with Legal Medicine
2,821
Avg Claims per Provider
Guillermo Alonso, MD's 4,736 claims are above the specialty average of 2,821.
Nearby Legal Medicine Providers in Florida
Other clinicians with the same primary specialty enrolled in Florida, drawn from the same CMS NPPES roster as Alonso.
Dr. Evelisse Acosta
MA
Tampa, FL
Dr. Patricia Aronica
M.D.
Fort Pierce, FL
Daniel Avital
Gainesville, FL
Dr. Eduardo Balbiani
M.D.
Naranja, FL
Dr. Eduardo Balsera
M.D.
Dunedin, FL
Compare Legal Medicine 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 Legal Medicine 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.
Healthcare Guides
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Frequently Asked Questions
What is Guillermo Alonso, MD's specialty? ▼
Guillermo Alonso, MD specializes in Legal Medicine and practices in Miami, Florida. Credentials: MD.
How much does Guillermo Alonso, MD prescribe under Medicare Part D? ▼
In 2023, Guillermo Alonso, MD wrote 4,736 Medicare Part D claims totaling $317K in drug costs for 107 beneficiaries.
Where is Guillermo Alonso, MD located? ▼
Guillermo Alonso, MD is located at 8000 W FLAGLER ST STE 206, Miami, FL, 33144. Phone: (786) 703-1620.
What is Guillermo Alonso, MD's NPI number? ▼
Guillermo Alonso, MD's National Provider Identifier (NPI) is 1336120708, issued on 11/10/2005.
Does Guillermo Alonso, MD prescribe more brand-name or generic drugs? ▼
Guillermo Alonso, MD's prescribing is 16% brand-name and 83% generic drugs by claim count, with $225K in brand drug costs.
How many Legal Medicine providers are there in the US? ▼
There are 1,065 Legal Medicine providers across 51 states in the US. The average Legal Medicine provider writes 2,821 Medicare Part D claims per year.
What drugs does Guillermo Alonso, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Guillermo Alonso, MD's most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Guillermo Alonso, MD accept Medicare? ▼
Guillermo Alonso, MD appears in CMS Medicare data with 4,736 Part D claims and 107 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Guillermo Alonso, MD's credentials? ▼
Guillermo Alonso, MD's NPI is 1336120708 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.