NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1528444221 MD
Verify on CMS → Nalyssa Rivera Cora, MD
Family Medicine Physician in Patillas, 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 147,760 in Family 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
3K
Medicare Part D claims · 243 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
76%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Nalyssa Rivera Cora, MD filed 3,104 Medicare Part D claims in 2023 as a Family Medicine Physician in Patillas, Puerto Rico, prescribing 76% generic.
- 3K
- Part D claims, 2023
- 76%
- generic prescribing
- ≥89th
- 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.
CMS NPPES provider registry desk
NPI 1528444221 · Family Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1528444221
- ENUM-MID 2015
- TAX-MEGA 148K Family Medicine
- RX-MID 3,104
- BOOK-LIGHT 580 in Puerto Rico
- PHOTO-ENUM Kristin Comstock · 2015
Nalyssa Rivera Cora, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,104 ≥ 89th percentile 89% of 1,370,886 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 · 2023
◑
Board-eligible specialty (heuristic, not verified)
Nalyssa Rivera Cora, 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 Nalyssa Rivera Cora, MD?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
3,104 9% vs specialty avg
Specialty distribution in Puerto Rico
How Family 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 Family 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).
Practice Address
Provider Details
| NPI | 1528444221 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 08/04/2015 |
Brand vs generic prescribing mix · Typical
Nalyssa Rivera Cora, MD - brand share 20.0%
Family Medicine Physician average
20% brand-name claims vs 76% generic, on 3,104 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.
3,104
Total Claims
$347K
Total Drug Cost
243
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,243
- Total Day Supply
- 152,810
- Brand vs Generic
- 20% brand / 76% generic
- Brand Drug Cost
- $317K
- Generic Drug Cost
- $27K
- Antibiotic Claims
- 22
Patient Demographics
- Average Patient Age
- 69.9 years
- Avg HCC Risk Score
- 1.45
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 55, 65-74: 101, 75-84: 69, 85+: 18
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Nalyssa Rivera Cora, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
198 claims
- Synthroid
Synthroid
130 claims
- Gabapentin
Gabapentin
122 claims
- Amlodipine Besylate
Amlodipine Besylate
113 claims
- Losartan Potassium
Losartan Potassium
110 claims
- Metformin Hcl
Metformin Hcl
110 claims
- Lisinopril
Lisinopril
107 claims
- Famotidine
Famotidine
106 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 198 |
| Synthroid Levothyroxine Sodium | 130 |
| Gabapentin | 122 |
| Amlodipine Besylate | 113 |
| Losartan Potassium | 110 |
| Metformin Hcl | 110 |
| Lisinopril | 107 |
| Famotidine | 106 |
| Simvastatin | 97 |
| Omeprazole | 93 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Nalyssa Rivera Cora, MD fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Nalyssa Rivera Cora, MD's 3,104 claims are below the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Rivera Cora, both outside Puerto Rico so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2015)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family 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 Rivera Cora.
One of 580 Family Medicine Physician providers enrolled in Puerto Rico, 5 are shown here.
Dr. Luis Acevedo-Marty
M.D.
Aguadilla, PR
Dr. Humberto Acosta
M.D.
Cabo Rojo, PR
Dr. Sheila Acosta
MD
Manati, PR
Dr. Greisha Adorno-Robles
MD
Barceloneta, PR
Dr. Georgina Aguirre
M.D.
Ponce, PR
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Nalyssa Rivera Cora, MD's specialty? ▼
Nalyssa Rivera Cora, MD specializes in Family Medicine Physician and practices in Patillas, Puerto Rico. Credentials: MD.
How much does Nalyssa Rivera Cora, MD prescribe under Medicare Part D? ▼
In 2023, Nalyssa Rivera Cora, MD wrote 3,104 Medicare Part D claims totaling $347K in drug costs for 243 beneficiaries.
Where is Nalyssa Rivera Cora, MD located? ▼
Nalyssa Rivera Cora, MD is located at GUILLERMO RIEFKOHL ST #99, Patillas, PR, 00723. Phone: (787) 839-4320.
What is Nalyssa Rivera Cora, MD's NPI number? ▼
Nalyssa Rivera Cora, MD's National Provider Identifier (NPI) is 1528444221, issued on 08/04/2015.
Does Nalyssa Rivera Cora, MD prescribe more brand-name or generic drugs? ▼
Nalyssa Rivera Cora, MD's prescribing is 20% brand-name and 76% generic drugs by claim count, with $317K in brand drug costs.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Nalyssa Rivera Cora, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Nalyssa Rivera Cora, MD's most frequently prescribed drugs include Atorvastatin Calcium, Synthroid, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nalyssa Rivera Cora, MD accept Medicare? ▼
Nalyssa Rivera Cora, MD appears in CMS Medicare data with 3,104 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 Nalyssa Rivera Cora, MD's credentials? ▼
Nalyssa Rivera Cora, MD's NPI is 1528444221 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
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.