NPI registry status
Active
2026 NPPES data Surgical Oncology Physician NPI 1669458618 MD
Verify on CMS → Reynold Lopez, MD
Surgical Oncology 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 1,410 in Surgical Oncology 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
131
Medicare Part D claims · 39 beneficiaries · Surgical Oncology Physician avg: 97
Generic prescribing
61%
generic claims · 39% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$159.08
2 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
Reynold Lopez, MD filed 131 Medicare Part D claims in 2023 as a Surgical Oncology Physician in San Juan, Puerto Rico, prescribing 61% generic.
- 131
- Part D claims, 2023
- 61%
- 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.
Reynold Lopez, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
131 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 certification likely (heuristic, not verified)
Reynold Lopez, MD 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 Reynold Lopez, MD?
Quality data not reportedPrimary specialty
Surgical Oncology Physician
Medicare Part D claims
131 35% vs specialty avg
Specialty distribution in Puerto Rico
How Surgical Oncology 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 Surgical Oncology 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).
Reynold Lopez, MD appears in the CMS NPPES registry as a Surgical Oncology Physician provider holding MD credentials at 431 PONCE DE LEON AVE, San Juan, PR, 00917, with a listed phone of (787) 281-3838. NPI 1669458618 was issued on 12/21/2005.
Medicare Part D records for calendar year 2023 show 131 prescription claims written by this provider, covering 39 Medicare beneficiaries and totaling roughly $4K in drug spend, split 39% brand-name and 61% generic by claim count.
Surgical Oncology Physician is a narrow specialty nationwide, with 1,410 enrolled providers across 50 states and an average of 97 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 | 1669458618 |
|---|---|
| Specialty | Surgical Oncology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 12/21/2005 |
Hospital and facility affiliations
Facilities where Reynold Lopez, MD 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.
Recinto DE Ciencias Medicas
Carolina, PR
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 Reynold Lopez, MD. Source: openpaymentsdata.cms.gov.
Total received
$159
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.
Brand vs generic prescribing mix · Above average
Reynold Lopez, MD - brand share 39.0%
Surgical Oncology Physician average
39% brand-name claims vs 61% generic, on 131 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.
131
Total Claims
$4K
Total Drug Cost
39
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 177
- Total Day Supply
- 4,902
- Brand vs Generic
- 39% brand / 61% generic
- Brand Drug Cost
- $3K
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 71.4 years
- Avg HCC Risk Score
- 1.59
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Reynold Lopez, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Synthroid
Synthroid
43 claims
- Tamoxifen Citrate
Tamoxifen Citrate
32 claims
- Anastrozole
Anastrozole
20 claims
| Drug | Claims |
|---|---|
| Synthroid Levothyroxine Sodium | 43 |
| Tamoxifen Citrate | 32 |
| Anastrozole | 20 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Surgical Oncology Physician Overview
How Reynold Lopez, MD fits within the Surgical Oncology Physician landscape nationally.
1,410
Surgical Oncology Physician Providers in US
50
States with Surgical Oncology Physician
97
Avg Claims per Provider
Reynold Lopez, MD's 131 claims are above the specialty average of 97.
Nearby Surgical Oncology Physician Providers in Puerto Rico
Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as Lopez.
Dr. Jose Cebollero Marcucci
MD
Guayama, PR
Dr. Pablo Mojica Manosa
MD
San Juan, PR
Dr. Edna Mora Pinero
MD
San Juan, PR
Dr. Jorge Toro-Burguete
M.D.
Ponce, PR
Compare Surgical Oncology 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 Surgical Oncology 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.
Healthcare Guides
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Medical Specialties Explained
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Explore Puerto Rico
Frequently Asked Questions
What is Reynold Lopez, MD's specialty? ▼
Reynold Lopez, MD specializes in Surgical Oncology Physician and practices in San Juan, Puerto Rico. Credentials: MD.
How much does Reynold Lopez, MD prescribe under Medicare Part D? ▼
In 2023, Reynold Lopez, MD wrote 131 Medicare Part D claims totaling $4K in drug costs for 39 beneficiaries.
Where is Reynold Lopez, MD located? ▼
Reynold Lopez, MD is located at 431 PONCE DE LEON AVE, San Juan, PR, 00917. Phone: (787) 281-3838.
What is Reynold Lopez, MD's NPI number? ▼
Reynold Lopez, MD's National Provider Identifier (NPI) is 1669458618, issued on 12/21/2005.
Does Reynold Lopez, MD prescribe more brand-name or generic drugs? ▼
Reynold Lopez, MD's prescribing is 39% brand-name and 61% generic drugs by claim count, with $3K in brand drug costs.
How many Surgical Oncology Physician providers are there in the US? ▼
There are 1,410 Surgical Oncology Physician providers across 50 states in the US. The average Surgical Oncology Physician provider writes 97 Medicare Part D claims per year.
What drugs does Reynold Lopez, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Reynold Lopez, MD's most frequently prescribed drugs include Synthroid, Tamoxifen Citrate, Anastrozole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Reynold Lopez, MD accept Medicare? ▼
Reynold Lopez, MD appears in CMS Medicare data with 131 Part D claims and 39 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Reynold Lopez, MD's credentials? ▼
Reynold Lopez, MD's NPI is 1669458618 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.