NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1922443217 MD
Verify on CMS → Alexandra Alvira Lopez, MD
Obstetrics & Gynecology Physician 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 44,313 in Obstetrics & Gynecology 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
196
Medicare Part D claims · 58 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
65%
generic claims · 35% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$88.74
3 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
Alexandra Alvira Lopez, MD filed 196 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in Guaynabo, Puerto Rico, prescribing 65% generic.
- 196
- Part D claims, 2023
- 65%
- generic prescribing
- $88.74
- 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 Alvira Lopez, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
196 35th percentile higher than 35% 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)
Alexandra Alvira Lopez, MD 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 Alvira Lopez, MD?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
196 9% vs specialty avg
Specialty distribution in Puerto Rico
How Obstetrics & Gynecology Physician 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 Obstetrics & Gynecology 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).
Alexandra Alvira Lopez, MD appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding MD credentials at CAPARRA GALLERY PLAZA SUITE 312, Guaynabo, PR, 00966, with a listed phone of (787) 754-0907. NPI 1922443217 was issued on 05/01/2013.
Medicare Part D records for calendar year 2023 show 196 prescription claims written by this provider, covering 58 Medicare beneficiaries and totaling roughly $20K in drug spend, split 35% brand-name and 65% generic by claim count.
Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 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 | 1922443217 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/01/2013 |
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 Alvira Lopez, MD. Source: openpaymentsdata.cms.gov.
Total received
$89
Largest payer
Hologic Sales and Service, LLC
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 · Above average
Alexandra Alvira Lopez, MD - brand share 35.0%
Obstetrics & Gynecology Physician average
35% brand-name claims vs 65% generic, on 196 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.
196
Total Claims
$20K
Total Drug Cost
58
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 264
- Total Day Supply
- 6,856
- Brand vs Generic
- 35% brand / 65% generic
- Brand Drug Cost
- $15K
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 68.6 years
- Avg HCC Risk Score
- 1.47
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Alexandra Alvira Lopez, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Clotrimazole-Betam…
Clotrimazole-Betamethasone
24 claims
- Tolterodine Tartrate
Tolterodine Tartrate
16 claims
- Tolterodine Tartra…
Tolterodine Tartrate Er
13 claims
- Medroxyprogesteron…
Medroxyprogesterone Acetate
12 claims
| Drug | Claims |
|---|---|
| Clotrimazole-Betamethasone Clotrimazole/Betamethasone Dip | 24 |
| Tolterodine Tartrate | 16 |
| Tolterodine Tartrate Er Tolterodine Tartrate | 13 |
| Medroxyprogesterone Acetate | 12 |
| Premarin "Estrogens | N/A |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Obstetrics & Gynecology Physician Overview
How Alexandra Alvira Lopez, MD fits within the Obstetrics & Gynecology Physician landscape nationally.
44,313
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider
Alexandra Alvira Lopez, MD's 196 claims are above the specialty average of 179.
Nearby Obstetrics & Gynecology Physician Providers in Puerto Rico
Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as Alvira Lopez.
Dr. Cristina Abreu Jimenez
M.D.
San Juan, PR
Dr. Luis Acosta Garcia
MD
Ponce, PR
Dr. Abby Agosto-Ventura
MD
Caguas, PR
Dr. David Aguirre
MD
Guaynabo, PR
Dr. William Alemany-Enriquez
M.D.
Bayamon, PR
Compare Obstetrics & Gynecology 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 Obstetrics & Gynecology 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
What is Alexandra Alvira Lopez, MD's specialty? ▼
Alexandra Alvira Lopez, MD specializes in Obstetrics & Gynecology Physician and practices in Guaynabo, Puerto Rico. Credentials: MD.
How much does Alexandra Alvira Lopez, MD prescribe under Medicare Part D? ▼
In 2023, Alexandra Alvira Lopez, MD wrote 196 Medicare Part D claims totaling $20K in drug costs for 58 beneficiaries.
Where is Alexandra Alvira Lopez, MD located? ▼
Alexandra Alvira Lopez, MD is located at CAPARRA GALLERY PLAZA SUITE 312, Guaynabo, PR, 00966. Phone: (787) 754-0907.
What is Alexandra Alvira Lopez, MD's NPI number? ▼
Alexandra Alvira Lopez, MD's National Provider Identifier (NPI) is 1922443217, issued on 05/01/2013.
Does Alexandra Alvira Lopez, MD prescribe more brand-name or generic drugs? ▼
Alexandra Alvira Lopez, MD's prescribing is 35% brand-name and 65% generic drugs by claim count, with $15K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,313 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does Alexandra Alvira Lopez, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Alexandra Alvira Lopez, MD's most frequently prescribed drugs include Clotrimazole-Betamethasone, Tolterodine Tartrate, Tolterodine Tartrate Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alexandra Alvira Lopez, MD accept Medicare? ▼
Alexandra Alvira Lopez, MD appears in CMS Medicare data with 196 Part D claims and 58 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alexandra Alvira Lopez, MD's credentials? ▼
Alexandra Alvira Lopez, MD's NPI is 1922443217 with credentials MD. 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.