2026 NPPES data Adult Medicine Physician NPI 1336366624 M.D.
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ALEJANDRO DIAZ, M.D.

Adult Medicine Physician in PLANT CITY, Florida. 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
6K
Medicare Part D claims · 314 beneficiaries · Adult Medicine Physician avg: 3K
Generic prescribing
92%
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)

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 92% generic.

6K
Part D claims, 2023
92%
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

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 reported

NPI registry status

Active

Issued 04/19/2007

NPI 1336366624

Primary specialty

Adult Medicine Physician

Niche

2,481 US NPIs in this specialty

Medicare Part D claims

5,905 110% vs specialty avg

2023 prescription claims

Specialty avg: 2,807

Specialty distribution in Florida

How Adult Medicine Physician compares to other specialties among Florida providers

Florida providers

Adult Medicine Physician share within Florida

1. Adult Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Adult Medicine Physician share within Florida

Specialty board-certification context

Estimated specialty board-certified rate — Adult Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Adult Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Adult Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Adult Medicine 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).

ALEJANDRO DIAZ, M.D. is a Adult Medicine Physician provider practicing in PLANT CITY, Florida, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1336366624. 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.

ALEJANDRO DIAZ, M.D. appears in the CMS NPPES registry as a 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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DIAZ 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 5,905 prescription claims written by this provider, covering 314 Medicare beneficiaries and totaling roughly $303K in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 4.6%. 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.

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

1706 S ALEXANDER ST
PLANT CITY, FL 33563

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%
Specialty average (est.)

8% brand-name claims vs 92% 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 / 92% 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.

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.

Compare Adult Medicine Physician nationally: see state-by-state distribution →

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 92% 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

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