NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1487740221 M.D.
Verify on CMS → Luis Delvalle Galarza, M.D.
Internal Medicine Physician in San Lorenzo, 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 172,737 in Internal Medicine 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 · 243 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
86%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Luis Delvalle Galarza, M.D. filed 5,254 Medicare Part D claims in 2023 as a Internal Medicine Physician in San Lorenzo, Puerto Rico, prescribing 86% generic.
- 5K
- Part D claims, 2023
- 86%
- generic prescribing
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.
Luis Delvalle Galarza, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
5,254 Top 6% higher than 94% 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)
Luis Delvalle Galarza, M.D. 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 Luis Delvalle Galarza, M.D.?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
5,254 93% vs specialty avg
Specialty distribution in Puerto Rico
How Internal Medicine 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 Internal Medicine 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).
Luis Delvalle Galarza, M.D. appears in the CMS NPPES registry as an Internal Medicine Physician provider holding M.D. credentials at CALLE MUNOZ RIVERA, San Lorenzo, PR, 00754, with a listed phone of (787) 736-4071. NPI 1487740221 was issued on 10/05/2006.
Medicare Part D records for calendar year 2023 show 5,254 prescription claims written by this provider, covering 243 Medicare beneficiaries and totaling roughly $384K in drug spend, split 11% brand-name and 86% generic by claim count.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,737 enrolled providers across 56 states and an average of 2,716 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 | 1487740221 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/05/2006 |
Brand vs generic prescribing mix · Typical
Luis Delvalle Galarza, M.D. - brand share 11.0%
Internal Medicine Physician average
11% brand-name claims vs 86% generic, on 5,254 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.
5,254
Total Claims
$384K
Total Drug Cost
243
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 11,152
- Total Day Supply
- 326,658
- Brand vs Generic
- 11% brand / 86% generic
- Brand Drug Cost
- $287K
- Generic Drug Cost
- $93K
- Antibiotic Claims
- 24
Patient Demographics
- Average Patient Age
- 73.8 years
- Avg HCC Risk Score
- 1.49
- Gender Split
- 46% female / 54% male
- Age Distribution
- <65: 38, 65-74: 101, 75-84: 65, 85+: 39
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Luis Delvalle Galarza, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
306 claims
- Omeprazole
Omeprazole
275 claims
- Gabapentin
Gabapentin
268 claims
- Famotidine
Famotidine
253 claims
- Amlodipine Besylate
Amlodipine Besylate
244 claims
- Pantoprazole Sodium
Pantoprazole Sodium
241 claims
- Simvastatin
Simvastatin
230 claims
- Losartan Potassium
Losartan Potassium
190 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 306 |
| Omeprazole | 275 |
| Gabapentin | 268 |
| Famotidine | 253 |
| Amlodipine Besylate | 244 |
| Pantoprazole Sodium | 241 |
| Simvastatin | 230 |
| Losartan Potassium | 190 |
| Metformin Hcl | 186 |
| Levothyroxine Sodium | 172 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How Luis Delvalle Galarza, M.D. fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Luis Delvalle Galarza, M.D.'s 5,254 claims are above the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Puerto Rico
Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as Delvalle Galarza.
Dr. Jamil Abouelhossen
MD
Fajardo, PR
Dr. James Abrams
MD
San Juan, PR
Fernando Abreu Gonzalez
San Juan, PR
Dr. Jumana Abuomar
M.D.
Canovanas, PR
Dr. Lourdes Acevedo
M.D.
Aguada, PR
Compare Internal Medicine 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 Internal Medicine 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 Luis Delvalle Galarza, M.D.'s specialty? ▼
Luis Delvalle Galarza, M.D. specializes in Internal Medicine Physician and practices in San Lorenzo, Puerto Rico. Credentials: M.D..
How much does Luis Delvalle Galarza, M.D. prescribe under Medicare Part D? ▼
In 2023, Luis Delvalle Galarza, M.D. wrote 5,254 Medicare Part D claims totaling $384K in drug costs for 243 beneficiaries.
Where is Luis Delvalle Galarza, M.D. located? ▼
Luis Delvalle Galarza, M.D. is located at CALLE MUNOZ RIVERA, San Lorenzo, PR, 00754. Phone: (787) 736-4071.
What is Luis Delvalle Galarza, M.D.'s NPI number? ▼
Luis Delvalle Galarza, M.D.'s National Provider Identifier (NPI) is 1487740221, issued on 10/05/2006.
Does Luis Delvalle Galarza, M.D. prescribe more brand-name or generic drugs? ▼
Luis Delvalle Galarza, M.D.'s prescribing is 11% brand-name and 86% generic drugs by claim count, with $287K in brand drug costs.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Luis Delvalle Galarza, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Luis Delvalle Galarza, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Omeprazole, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Luis Delvalle Galarza, M.D. accept Medicare? ▼
Luis Delvalle Galarza, M.D. appears in CMS Medicare data with 5,254 Part D claims and 243 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Luis Delvalle Galarza, M.D.'s credentials? ▼
Luis Delvalle Galarza, M.D.'s NPI is 1487740221 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.