NPI registry status
Active
2026 NPPES data Adult Medicine Physician NPI 1336366624 M.D.
Verify on CMS → Alejandro Diaz, M.D.
Adult Medicine Physician in Plant City, 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 2,481 in Adult Medicine 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
6K
Medicare Part D claims · 314 beneficiaries · Adult Medicine Physician avg: 3K
Generic prescribing
91%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$221.84
2 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
Alejandro Diaz, M.D. filed 5,905 Medicare Part D claims in 2023 as a Adult Medicine Physician in Plant City, Florida, prescribing 91% generic.
- 6K
- Part D claims, 2023
- 91%
- generic prescribing
- $221.84
- 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.
Alejandro Diaz, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
5,905 Top 5% higher than 95% 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-eligible specialty (heuristic, not verified)
Alejandro Diaz, 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).
What does the federal data show about Alejandro Diaz, M.D.?
Quality data not reportedPrimary specialty
Adult Medicine Physician
Medicare Part D claims
5,905 110% vs specialty avg
Specialty distribution in Florida
How Adult Medicine 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 Adult Medicine 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).
Alejandro Diaz, M.D. appears in the CMS NPPES registry as an Adult Medicine Physician provider holding M.D. credentials at 1706 S ALEXANDER ST, Plant City, FL, 33563, with a listed phone of (813) 717-9000. NPI 1336366624 was issued on 04/19/2007.
Medicare Part D records for calendar year 2023 show 5,905 prescription claims written by this provider, covering 314 Medicare beneficiaries and totaling roughly $303K in drug spend, split 8% brand-name and 91% generic by claim count, with an opioid prescribing rate of 4.6%.
Adult Medicine Physician is a narrow specialty nationwide, with 2,481 enrolled providers across 52 states and an average of 2,807 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 | 1336366624 |
|---|---|
| Specialty | Adult Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 04/19/2007 |
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 Alejandro Diaz, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$222
Largest payer
Amgen 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 Alejandro Diaz, M.D.. To verify Alejandro Diaz, M.D.'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 · Generic-heavy
Alejandro Diaz, M.D. - brand share 8.0%
Adult Medicine Physician average
8% brand-name claims vs 91% generic, on 5,905 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.
5,905
Total Claims
$303K
Total Drug Cost
314
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 13,080
- Total Day Supply
- 373,255
- Brand vs Generic
- 8% brand / 91% generic
- Brand Drug Cost
- $196K
- Generic Drug Cost
- $104K
- Opioid Claims
- 273 (4.6% rate)
- Antibiotic Claims
- 357
Patient Demographics
- Average Patient Age
- 73.5 years
- Avg HCC Risk Score
- 1.37
- Gender Split
- 45% female / 55% male
- Age Distribution
- <65: 20, 65-74: 162, 75-84: 110, 85+: 22
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Alejandro Diaz, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
332 claims
- Losartan Potassium
Losartan Potassium
277 claims
- Metformin Hcl
Metformin Hcl
193 claims
- Levothyroxine Sodium
Levothyroxine Sodium
191 claims
- Amlodipine Besylate
Amlodipine Besylate
176 claims
- Metoprolol Tartrate
Metoprolol Tartrate
164 claims
- Simvastatin
Simvastatin
154 claims
- Lisinopril
Lisinopril
151 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 332 |
| Losartan Potassium | 277 |
| Metformin Hcl | 193 |
| Levothyroxine Sodium | 191 |
| Amlodipine Besylate | 176 |
| Metoprolol Tartrate | 164 |
| Simvastatin | 154 |
| Lisinopril | 151 |
| Prednisone | 149 |
| Alprazolam | 134 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Adult Medicine Physician Overview
How Alejandro Diaz, M.D. fits within the Adult Medicine Physician landscape nationally.
2,481
Adult Medicine Physician Providers in US
52
States with Adult Medicine Physician
2,807
Avg Claims per Provider
Alejandro Diaz, M.D.'s 5,905 claims are above the specialty average of 2,807.
Nearby Adult Medicine Physician Providers in Florida
Other clinicians with the same primary specialty enrolled in Florida, drawn from the same CMS NPPES roster as Diaz.
Dr. Cesar Abiera
M.D.
Deland, FL
Dr. Jessica Adam
PA-C
Aventura, FL
Dr. Fiaz Afzal
MD
Kissimmee, FL
Dr. Yasmin Akhtar
M.D.
Okeechobee, FL
Aleksey Alekseyenko
Port St Lucie, FL
Compare Adult Medicine 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 Adult Medicine 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Florida
Frequently Asked Questions
What is Alejandro Diaz, M.D.'s specialty? ▼
Alejandro Diaz, M.D. specializes in Adult Medicine Physician and practices in Plant City, Florida. Credentials: M.D..
How much does Alejandro Diaz, M.D. prescribe under Medicare Part D? ▼
In 2023, Alejandro Diaz, M.D. wrote 5,905 Medicare Part D claims totaling $303K in drug costs for 314 beneficiaries.
Where is Alejandro Diaz, M.D. located? ▼
Alejandro Diaz, M.D. is located at 1706 S ALEXANDER ST, Plant City, FL, 33563. Phone: (813) 717-9000.
What is Alejandro Diaz, M.D.'s NPI number? ▼
Alejandro Diaz, M.D.'s National Provider Identifier (NPI) is 1336366624, issued on 04/19/2007.
Does Alejandro Diaz, M.D. prescribe more brand-name or generic drugs? ▼
Alejandro Diaz, M.D.'s prescribing is 8% brand-name and 91% generic drugs by claim count, with $196K in brand drug costs.
Does Alejandro Diaz, M.D. prescribe opioids? ▼
Yes, Alejandro Diaz, M.D. had 273 opioid claims in 2023 with an opioid prescribing rate of 4.6%.
How many Adult Medicine Physician providers are there in the US? ▼
There are 2,481 Adult Medicine Physician providers across 52 states in the US. The average Adult Medicine Physician provider writes 2,807 Medicare Part D claims per year.
What drugs does Alejandro Diaz, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Alejandro Diaz, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alejandro Diaz, M.D. accept Medicare? ▼
Alejandro Diaz, M.D. appears in CMS Medicare data with 5,905 Part D claims and 314 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alejandro Diaz, M.D.'s credentials? ▼
Alejandro Diaz, M.D.'s NPI is 1336366624 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
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.