Alexandra Rivera Santos
General Practice Physician in San Juan, Puerto Rico. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 16,677 in General Practice 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.
What the federal data shows
Alexandra Rivera Santos filed 435 Medicare Part D claims in 2023 as a General Practice Physician in San Juan, Puerto Rico.
- 435
- Part D claims, 2023
- $255.98
- 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.
Alexandra Rivera Santos's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
435 Top 38% higher than 62% 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
Alexandra Rivera Santos 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 Alexandra Rivera Santos?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Puerto Rico
How General Practice Physician compares to other specialties among Puerto Rico providers
Largest specialties in Puerto Rico (% of in-state providers)
General Practice Physician ranks #1 among Puerto Rico's specialties (10% of in-state providers)
Each bar is a specialty's share of the Puerto Rico provider total, by primary NUCC taxonomy. The highlighted bar is General Practice Physician; the long tail of smaller specialties is omitted for legibility.
Specialty board-certification context
Estimated specialty board-certified rate — General Practice Physician (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- General Practice Physician ABMS/AOA estimate
Est. board-certified rate (General Practice Physician) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume General Practice Physician US NPIs
Specialty board-certified rate — General Practice Physician estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
Alexandra Rivera Santos appears in the CMS NPPES registry as a General Practice Physician provider at 1519 LOPEZ LANDRON, San Juan, PR, 00911. NPI 1962901850 was issued on 02/06/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Rivera Santos 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 435 prescription claims written by this provider, covering 231 Medicare beneficiaries and totaling roughly $8K in drug spend. 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.
General Practice Physician is a mid-sized specialty nationwide, with 16,677 enrolled providers across 56 states and an average of 2,872 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 | 1962901850 |
|---|---|
| Specialty | General Practice Physician |
| Gender | Female |
| NPI Issued | 02/06/2018 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm Alexandra Rivera Santos's current license status, disciplinary history, and board certifications directly with the licensing state's medical board before relying on this page for a clinical or care decision.
How we sourced this profile
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 Alexandra Rivera Santos. Source: openpaymentsdata.cms.gov.
Total received
$256
Largest payer
Janssen Pharmaceuticals, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
Prescribing Breakdown
- 30-Day Fills
- 437
- Total Day Supply
- 3,941
- Generic Drug Cost
- $5K
- Antibiotic Claims
- 125
Patient Demographics
- Average Patient Age
- 71.6 years
- Avg HCC Risk Score
- 1.88
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 47, 65-74: 96, 75-84: 63, 85+: 25
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Alexandra Rivera Santos prescribes most
Top Medicare Part D drugs by claim count, 2023
- Famotidine
Famotidine
50 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
40 claims
- Dexamethasone
Dexamethasone
40 claims
- Ketorolac Trometha…
Ketorolac Tromethamine
34 claims
- Levofloxacin
Levofloxacin
28 claims
- Ondansetron Hcl
Ondansetron Hcl
21 claims
- Azithromycin 17
Azithromycin
17 claims
- Naproxen 17
Naproxen
17 claims
| Drug | Claims |
|---|---|
| Famotidine | 50 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 40 |
| Dexamethasone | 40 |
| Ketorolac Tromethamine | 34 |
| Levofloxacin | 28 |
| Ondansetron Hcl | 21 |
| Azithromycin | 17 |
| Naproxen | 17 |
| Oseltamivir Phosphate | 14 |
| Dicyclomine Hcl | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
General Practice Physician Overview
How Alexandra Rivera Santos fits within the General Practice Physician landscape nationally.
Alexandra Rivera Santos's 435 claims are below the specialty average of 2,872.
Nearby General Practice Physician Providers in Puerto Rico
Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as Rivera Santos.
Compare General Practice 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 Puerto Rico medical board — federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby General Practice 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
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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