NPI registry status
Active
2026 NPPES data Specialist NPI 1053384479 M.D.
Verify on CMS → Miriam Rios Motta, M.D.
Specialist in Guaynabo, 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 69,608 in Specialist, 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
3K
Medicare Part D claims · 167 beneficiaries · Specialist avg: 1K
Generic prescribing
86%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$168.17
4 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
Miriam Rios Motta, M.D. filed 2,665 Medicare Part D claims in 2023 as a Specialist in Guaynabo, Puerto Rico, prescribing 86% generic.
- 3K
- Part D claims, 2023
- 86%
- generic prescribing
- $168.17
- 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.
Miriam Rios Motta, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,665 Top 13% higher than 87% 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 Miriam Rios Motta, M.D.?
Quality data not reportedPrimary specialty
Specialist
Medicare Part D claims
2,665 81% vs specialty avg
Specialty distribution in Puerto Rico
How Specialist compares to other specialties among Puerto Rico 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 Specialist. 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).
Miriam Rios Motta, M.D. appears in the CMS NPPES registry as a Specialist provider holding M.D. credentials at CENTRO INTERNACIONAL DE MERCADEO SUITE 306, Guaynabo, PR, 00968, with a listed phone of (787) 781-2402. NPI 1053384479 was issued on 02/08/2006.
Medicare Part D records for calendar year 2023 show 2,665 prescription claims written by this provider, covering 167 Medicare beneficiaries and totaling roughly $736K in drug spend, split 13% brand-name and 86% generic by claim count.
Specialist is a high-volume specialty nationwide, with 69,608 enrolled providers across 55 states and an average of 1,474 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 | 1053384479 |
|---|---|
| Specialty | Specialist |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 02/08/2006 |
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 Miriam Rios Motta, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$168
Largest payer
PTC Therapeutics, 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.
Brand vs generic prescribing mix · Typical
Miriam Rios Motta, M.D. - brand share 13.0%
Specialist average
13% brand-name claims vs 86% generic, on 2,665 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.
2,665
Total Claims
$736K
Total Drug Cost
167
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,255
- Total Day Supply
- 95,517
- Brand vs Generic
- 13% brand / 86% generic
- Brand Drug Cost
- $600K
- Generic Drug Cost
- $135K
Patient Demographics
- Average Patient Age
- 64.5 years
- Avg HCC Risk Score
- 1.70
- Gender Split
- 69% female / 31% male
- Age Distribution
- <65: 66, 65-74: 48, 75-84: 41, 85+: 12
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Miriam Rios Motta, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Lamotrigine
Lamotrigine
275 claims
- Levetiracetam
Levetiracetam
205 claims
- Lacosamide
Lacosamide
188 claims
- Gabapentin
Gabapentin
177 claims
- Oxcarbazepine
Oxcarbazepine
129 claims
- Clonazepam
Clonazepam
113 claims
- Topiramate 78
Topiramate
78 claims
- Galantamine Er 77
Galantamine Er
77 claims
| Drug | Claims |
|---|---|
| Lamotrigine | 275 |
| Levetiracetam | 205 |
| Lacosamide | 188 |
| Gabapentin | 177 |
| Oxcarbazepine | 129 |
| Clonazepam | 113 |
| Topiramate | 78 |
| Galantamine Er Galantamine Hbr | 77 |
| Clobazam | 70 |
| Sertraline Hcl | 67 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Miriam Rios Motta, M.D. fits within the Specialist landscape nationally.
69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Miriam Rios Motta, M.D.'s 2,665 claims are above the specialty average of 1,474.
Nearby Specialist Providers in Puerto Rico
Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as Rios Motta.
Dr. Alberto Abreu
M.D.
Ponce, PR
Dr. Arlene Abreu Rivera
MD
Caguas, PR
Dr. Alberto Abreu-Rivera
M.D. FAMILY PHYSICIA
Arecibo, PR
Dr. Carmen Acantilado
M.D.
Bayamon, PR
Dr. Frank Acevedo
M.D.
Cayey, PR
Compare Specialist 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 Specialist 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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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
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How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Puerto Rico
Frequently Asked Questions
What is Miriam Rios Motta, M.D.'s specialty? ▼
Miriam Rios Motta, M.D. specializes in Specialist and practices in Guaynabo, Puerto Rico. Credentials: M.D..
How much does Miriam Rios Motta, M.D. prescribe under Medicare Part D? ▼
In 2023, Miriam Rios Motta, M.D. wrote 2,665 Medicare Part D claims totaling $736K in drug costs for 167 beneficiaries.
Where is Miriam Rios Motta, M.D. located? ▼
Miriam Rios Motta, M.D. is located at CENTRO INTERNACIONAL DE MERCADEO SUITE 306, Guaynabo, PR, 00968. Phone: (787) 781-2402.
What is Miriam Rios Motta, M.D.'s NPI number? ▼
Miriam Rios Motta, M.D.'s National Provider Identifier (NPI) is 1053384479, issued on 02/08/2006.
Does Miriam Rios Motta, M.D. prescribe more brand-name or generic drugs? ▼
Miriam Rios Motta, M.D.'s prescribing is 13% brand-name and 86% generic drugs by claim count, with $600K in brand drug costs.
How many Specialist providers are there in the US? ▼
There are 69,608 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Miriam Rios Motta, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Miriam Rios Motta, M.D.'s most frequently prescribed drugs include Lamotrigine, Levetiracetam, Lacosamide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Miriam Rios Motta, M.D. accept Medicare? ▼
Miriam Rios Motta, M.D. appears in CMS Medicare data with 2,665 Part D claims and 167 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Miriam Rios Motta, M.D.'s credentials? ▼
Miriam Rios Motta, M.D.'s NPI is 1053384479 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.