NPI registry status
Active
2026 NPPES data Registered Nurse NPI 1770186025
Verify on CMS → Carla Oliveira
Registered Nurse in Danbury, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 177,204 in Registered Nurse, 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
799
Medicare Part D claims · 415 beneficiaries · Registered Nurse avg: 1K
Generic prescribing
91%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
94.2/100
▲ 11 pts above national avg 83.1 · Exceptional
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
Carla Oliveira reported a CMS MIPS final score of 94.2/100 - above the 83.1 national average - and filed 799 Medicare Part D claims in 2023.
- 94.2/100
- MIPS score · +11 vs avg
- 799
- Part D claims, 2023
- 91%
- 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.
Carla Oliveira's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
94 Top 25% higher than 75% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Carla Oliveira sits
This provider among registered nurse peers
Across the 3,327 registered nurse providers who report both Medicare Part D prescribing and a MIPS quality score, Carla Oliveira writes more Part D claims than 68% of them and scores higher on MIPS quality than 77% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one registered nurse peer from a representative sample of 60; the gold marker is Carla Oliveira. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Carla Oliveira?
High performer (top quartile)Primary specialty
Registered Nurse
Medicare Part D claims
799 20% vs specialty avg
MIPS final score
94.2/100 11.1 pts vs avg
Specialty distribution in Connecticut
How Registered Nurse compares to other specialties among Connecticut providers
Medicare quality performance, MIPS
Carla Oliveira's 2023 MIPS final score plotted against the Registered Nurse national average
- MIPS Final Score
- 94.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Registered Nurse) - 94.2/100 vs national avg 83.1
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).
Carla Oliveira appears in the CMS NPPES registry as a Registered Nurse provider at 37 ROCKY GLEN RD, Danbury, CT, 06810, with a listed phone of (203) 733-8249. NPI 1770186025 was issued on 11/19/2020.
Medicare Part D records for calendar year 2023 show 799 prescription claims written by this provider, covering 415 Medicare beneficiaries and totaling roughly $38K in drug spend, split 8% brand-name and 91% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 94.2/100 for the 2023 performance year (Quality 78.3), compared with the national average of 83.1.
Registered Nurse is a high-volume specialty nationwide, with 177,204 enrolled providers across 56 states and an average of 1,000 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 | 1770186025 |
|---|---|
| Specialty | Registered Nurse |
| Gender | Female |
| NPI Issued | 11/19/2020 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
94.2464
Final Score
Avg: 83.1
78.2615
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Carla Oliveira 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.
Nuvance Health Medical Practice CT Inc
Brookfield, CT
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
Carla Oliveira - brand share 8.0%
Registered Nurse average
8% brand-name claims vs 91% generic, on 799 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.
799
Total Claims
$38K
Total Drug Cost
415
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,386
- Total Day Supply
- 33,202
- Brand vs Generic
- 8% brand / 91% generic
- Brand Drug Cost
- $27K
- Generic Drug Cost
- $11K
- Antibiotic Claims
- 186
Patient Demographics
- Average Patient Age
- 73.2 years
- Avg HCC Risk Score
- 1.24
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 47, 65-74: 167, 75-84: 148, 85+: 53
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Carla Oliveira prescribes most
Top Medicare Part D drugs by claim count, 2023
- Azithromycin
Azithromycin
75 claims
- Methylprednisolone
Methylprednisolone
42 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
31 claims
- Prednisone 28
Prednisone
28 claims
- Amlodipine Besylate 25
Amlodipine Besylate
25 claims
- Pantoprazole Sodium 25
Pantoprazole Sodium
25 claims
- Atorvastatin Calcium 24
Atorvastatin Calcium
24 claims
- Doxycycline Hyclate 18
Doxycycline Hyclate
18 claims
| Drug | Claims |
|---|---|
| Azithromycin | 75 |
| Methylprednisolone | 42 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 31 |
| Prednisone | 28 |
| Amlodipine Besylate | 25 |
| Pantoprazole Sodium | 25 |
| Atorvastatin Calcium | 24 |
| Doxycycline Hyclate | 18 |
| Lisinopril | 17 |
| Losartan Potassium | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Registered Nurse Overview
How Carla Oliveira fits within the Registered Nurse landscape nationally.
177,204
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider
Carla Oliveira's 799 claims are below the specialty average of 1,000.
Nearby Registered Nurse Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Oliveira.
Dr. Adey Abebe
APRN
Danbury, CT
Dr. Kwame Acheampong
NP
Stratford, CT
Amanda Adams
West Haven, CT
Barbara Addi
Bridgeport, CT
Jenna Addison
Trumbull, CT
Compare Registered Nurse 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 Connecticut medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Registered Nurse 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
Who treats what and how specialties differ
Understanding Medicare Claims Data
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Frequently Asked Questions
What is Carla Oliveira's specialty? ▼
Carla Oliveira specializes in Registered Nurse and practices in Danbury, Connecticut.
How much does Carla Oliveira prescribe under Medicare Part D? ▼
In 2023, Carla Oliveira wrote 799 Medicare Part D claims totaling $38K in drug costs for 415 beneficiaries.
What is Carla Oliveira's Medicare quality score? ▼
Carla Oliveira has a CMS MIPS Final Score of 94.2/100 (Quality: 78.3). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Carla Oliveira located? ▼
Carla Oliveira is located at 37 ROCKY GLEN RD, Danbury, CT, 06810. Phone: (203) 733-8249.
What is Carla Oliveira's NPI number? ▼
Carla Oliveira's National Provider Identifier (NPI) is 1770186025, issued on 11/19/2020.
Does Carla Oliveira prescribe more brand-name or generic drugs? ▼
Carla Oliveira's prescribing is 8% brand-name and 91% generic drugs by claim count, with $27K in brand drug costs.
How many Registered Nurse providers are there in the US? ▼
There are 177,204 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,000 Medicare Part D claims per year.
What drugs does Carla Oliveira prescribe most often? ▼
Based on 2023 Medicare Part D data, Carla Oliveira's most frequently prescribed drugs include Azithromycin, Methylprednisolone, Amoxicillin-Clavulanate Potass. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Carla Oliveira accept Medicare? ▼
Carla Oliveira appears in CMS Medicare data with 799 Part D claims and 415 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carla Oliveira's credentials? ▼
Carla Oliveira's NPI is 1770186025. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.