NPI registry status
Active
2026 NPPES data General Practice Physician NPI 1821086331 MD
Verify on CMS → Alejandro Calvi, MD
General Practice Physician in Humacao, 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 16,838 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.
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 · 105 beneficiaries · General Practice Physician avg: 3K
Generic prescribing
87%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Alejandro Calvi, MD filed 4,804 Medicare Part D claims in 2024 as a General Practice Physician in Humacao, Puerto Rico, prescribing 87% generic.
- 5K
- Part D claims, 2024
- 87%
- generic prescribing
- ≥93rd
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Alejandro Calvi, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1821086331), first enumerated 10/10/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 4,804 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1821086331 · General Practice Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1821086331
- ENUM-LEGACY 2005
- TAX-MID 17K General Practice
- RX-MID 4,804
- BOOK-LIGHT 3,970 in Puerto Rico
- PHOTO-ENUM Wellington Chen, MD · 2005
Alejandro Calvi, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
4,804 ≥ 93rd percentile 93% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Alejandro Calvi, 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 Alejandro Calvi, MD?
Quality data not reportedPrimary specialty
General Practice Physician
Medicare Part D claims
4,804 62% vs specialty avg
Specialty distribution in Puerto Rico
How General Practice 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 General Practice 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).
Practice Address
Provider Details
| NPI | 1821086331 |
|---|---|
| Specialty | General Practice Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 10/10/2005 |
Brand vs generic prescribing mix · Typical
Alejandro Calvi, MD - brand share 12.0%
General Practice Physician average
12% brand-name claims vs 87% generic, on 4,804 2024 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 2024.
4,804
Total Claims
$183K
Total Drug Cost
105
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,373.433
- Total Day Supply
- 155,266
- Brand vs Generic
- 12% brand / 87% generic
- Brand Drug Cost
- $149K
- Generic Drug Cost
- $33K
- Antibiotic Claims
- 38
Patient Demographics
- Average Patient Age
- 69.1 years
- Avg HCC Risk Score
- 1.43
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 28, 65-74: 45, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Alejandro Calvi, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Gabapentin
Gabapentin
320 claims
- Simvastatin
Simvastatin
272 claims
- Atorvastatin Calcium
Atorvastatin Calcium
208 claims
- Synthroid
Synthroid
203 claims
- Metformin Hcl
Metformin Hcl
200 claims
- Alendronate Sodium
Alendronate Sodium
199 claims
- Famotidine
Famotidine
192 claims
- Losartan Potassium
Losartan Potassium
174 claims
| Drug | Claims |
|---|---|
| Gabapentin | 320 |
| Simvastatin | 272 |
| Atorvastatin Calcium | 208 |
| Synthroid Levothyroxine Sodium | 203 |
| Metformin Hcl | 200 |
| Alendronate Sodium | 199 |
| Famotidine | 192 |
| Losartan Potassium | 174 |
| Omeprazole | 155 |
| Amlodipine Besylate | 140 |
* 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 Alejandro Calvi, MD fits within the General Practice Physician landscape nationally.
16,838
General Practice Physician Providers in US
56
States with General Practice Physician
2,957
Avg Claims per Provider
Alejandro Calvi, MD's 4,804 claims are above the specialty average of 2,957.
Nationwide General Practice Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Calvi, both outside Puerto Rico so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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 Calvi.
One of 3,970 General Practice Physician providers enrolled in Puerto Rico, 5 are shown here.
Dr. Veronica Abraham
MD
Bayamon, PR
Dr. Manuel Abraham Gonzalez
M.D.
San Juan, PR
Dr. Jennifer Abraham Vega
MD
San Juan, PR
Dr. Jose M. Abreu Guzman
M.D.
Manati, PR
Dr. Steven Abreu Reyes
M.D.
Las Piedras, PR
Compare General Practice Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Alejandro Calvi, MD's specialty? ▼
Alejandro Calvi, MD specializes in General Practice Physician and practices in Humacao, Puerto Rico. Credentials: MD.
How much does Alejandro Calvi, MD prescribe under Medicare Part D? ▼
In 2024, Alejandro Calvi, MD wrote 4,804 Medicare Part D claims totaling $183K in drug costs for 105 beneficiaries.
Where is Alejandro Calvi, MD located? ▼
Alejandro Calvi, MD is located at 56B AVE. MUNOZ MARIN, Humacao, PR, 00791. Phone: (787) 285-8078.
What is Alejandro Calvi, MD's NPI number? ▼
Alejandro Calvi, MD's National Provider Identifier (NPI) is 1821086331, issued on 10/10/2005.
Does Alejandro Calvi, MD prescribe more brand-name or generic drugs? ▼
Alejandro Calvi, MD's prescribing is 12% brand-name and 87% generic drugs by claim count, with $149K in brand drug costs.
How many General Practice Physician providers are there in the US? ▼
There are 16,838 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,957 Medicare Part D claims per year.
What drugs does Alejandro Calvi, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Alejandro Calvi, MD's most frequently prescribed drugs include Gabapentin, Simvastatin, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alejandro Calvi, MD accept Medicare? ▼
Alejandro Calvi, MD appears in CMS Medicare data with 4,804 Part D claims and 105 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alejandro Calvi, MD's credentials? ▼
Alejandro Calvi, MD's NPI is 1821086331 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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.