2026 NPPES data Rheumatology Physician NPI 1043223902 M.D.
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Carlos Alonso, M.D.

Rheumatology Physician 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 6,181 in Rheumatology 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
5K
Medicare Part D claims · 746 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
74%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.6K
65 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Carlos Alonso, M.D. filed 4,651 Medicare Part D claims in 2023 as a Rheumatology Physician in Miami, Florida, prescribing 74% generic.

5K
Part D claims, 2023
74%
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.

Carlos Alonso, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

4,651 Top 7% higher than 93% 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. 2K+: 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 certification likely (heuristic, not verified)

Carlos Alonso, 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).

What does the federal data show about Carlos Alonso, M.D.?

Quality data not reported

NPI registry status

Active

Issued 08/14/2006

NPI 1043223902

Primary specialty

Rheumatology Physician

Mid-sized

6,181 US NPIs in this specialty

Medicare Part D claims

4,651 126% vs specialty avg

2023 prescription claims

Specialty avg: 2,054

Specialty distribution in Florida

How Rheumatology Physician compares to other specialties among Florida providers

Florida providers

Largest specialties in Florida (% of in-state providers)

Behavior Technician - 16.1%Behavior Technician16.1%Mental Health Counselor - 4.8%Mental Health Counselor4.8%Family Nurse Practitioner - 4.5%Family Nurse Practitioner4.5%Pharmacist - 4.2%Pharmacist4.2%Student in an Organized Health Care Education/Training Program - 3.8%Student in an Organized Health Care Education/Training Program3.8%Physical Therapist - 3.1%Physical Therapist3.1%Rheumatology Physician - 0.1%Rheumatology Physician0.1%
Largest specialties in Florida (% of in-state 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 Rheumatology Physician. Verify directly:

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).

Carlos Alonso, M.D. appears in the CMS NPPES registry as a Rheumatology Physician provider holding M.D. credentials at 3659 S MIAMI AVE STE 3005, Miami, FL, 33133, with a listed phone of (305) 860-6260. NPI 1043223902 was issued on 08/14/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Alonso 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 4,651 prescription claims written by this provider, covering 746 Medicare beneficiaries and totaling roughly $5.2 million in drug spend, split 25% brand-name and 74% generic by claim count, with an opioid prescribing rate of 1.1%. 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.

Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 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

3659 S MIAMI AVE STE 3005
Miami, FL 33133

Provider Details

NPI 1043223902
Specialty Rheumatology Physician
Credentials M.D.
Gender Male
NPI Issued 08/14/2006

Hospital and facility affiliations

Facilities where Carlos Alonso, 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.

Carlos M Alonso MD PA
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 Carlos Alonso, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.6K

Largest payer

Novartis Pharmaceuticals Corporation

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 Carlos Alonso, M.D.. To verify Carlos Alonso, 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 · Above average

Carlos Alonso, M.D. - brand share 25.0%
Rheumatology Physician average

25% brand-name claims vs 74% generic, on 4,651 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.

4,651
Total Claims
$5.2M
Total Drug Cost
746
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,136
Total Day Supply
234,417
Brand vs Generic
25% brand / 74% generic
Brand Drug Cost
$5.1M
Generic Drug Cost
$110K
Opioid Claims
49 (1.1% rate)

Patient Demographics

Average Patient Age
75.2 years
Avg HCC Risk Score
1.98
Gender Split
82% female / 18% male
Age Distribution
<65: 66, 65-74: 269, 75-84: 286, 85+: 125

Top Prescribed Drugs (Medicare Part D)

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

What Carlos Alonso, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Methotrexate
Methotrexate Sodium
699
Prednisone
584
Folic Acid
317
Diclofenac Sodium
246
Enbrel Sureclick
Etanercept
186
Gabapentin
182
Prolia
Denosumab
140
Hydroxychloroquine Sulfate
136
Risedronate Sodium
126
Humira(Cf) Pen
Adalimumab
121

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

Rheumatology Physician Overview

How Carlos Alonso, M.D. fits within the Rheumatology Physician landscape nationally.

6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider

Carlos Alonso, M.D.'s 4,651 claims are above the specialty average of 2,054.

Nearby Rheumatology Physician Providers in Florida

Other clinicians with the same primary specialty enrolled in Florida, drawn from the same CMS NPPES roster as Alonso.

Compare Rheumatology 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 Rheumatology 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.

Frequently Asked Questions

What is Carlos Alonso, M.D.'s specialty?
Carlos Alonso, M.D. specializes in Rheumatology Physician and practices in Miami, Florida. Credentials: M.D..
How much does Carlos Alonso, M.D. prescribe under Medicare Part D?
In 2023, Carlos Alonso, M.D. wrote 4,651 Medicare Part D claims totaling $5.2M in drug costs for 746 beneficiaries.
Where is Carlos Alonso, M.D. located?
Carlos Alonso, M.D. is located at 3659 S MIAMI AVE STE 3005, Miami, FL, 33133. Phone: (305) 860-6260.
What is Carlos Alonso, M.D.'s NPI number?
Carlos Alonso, M.D.'s National Provider Identifier (NPI) is 1043223902, issued on 08/14/2006.
Does Carlos Alonso, M.D. prescribe more brand-name or generic drugs?
Carlos Alonso, M.D.'s prescribing is 25% brand-name and 74% generic drugs by claim count, with $5.1M in brand drug costs.
Does Carlos Alonso, M.D. prescribe opioids?
Yes, Carlos Alonso, M.D. had 49 opioid claims in 2023 with an opioid prescribing rate of 1.1%.
How many Rheumatology Physician providers are there in the US?
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does Carlos Alonso, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Carlos Alonso, M.D.'s most frequently prescribed drugs include Methotrexate, Prednisone, Folic Acid. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Carlos Alonso, M.D. accept Medicare?
Carlos Alonso, M.D. appears in CMS Medicare data with 4,651 Part D claims and 746 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carlos Alonso, M.D.'s credentials?
Carlos Alonso, M.D.'s NPI is 1043223902 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

Compiled from official public sources by the PlainDoctor editorial team.