NPI registry status
Active
2026 NPPES data Anesthesiology Physician NPI 1225039233 MD
Verify on CMS → Francisco Rivera Ferrer, MD
Anesthesiology Physician in Branford, 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 56,432 in Anesthesiology 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
40
Medicare Part D claims · Anesthesiology Physician avg: 860
What the federal data shows
Francisco Rivera Ferrer, MD filed 40 Medicare Part D claims in 2023 as an Anesthesiology Physician in Branford, Connecticut.
- 40
- Part D claims, 2023
- ≥0th
- 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.
Francisco Rivera Ferrer, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
40 ≥ 0th percentile 0% 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)
Francisco Rivera Ferrer, 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 Francisco Rivera Ferrer, MD?
Quality data not reportedPrimary specialty
Anesthesiology Physician
Medicare Part D claims
40 95% vs specialty avg
Specialty distribution in Connecticut
How Anesthesiology Physician compares to other specialties among Connecticut 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 Anesthesiology 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).
Francisco Rivera Ferrer, MD appears in the CMS NPPES registry as an Anesthesiology Physician provider holding MD credentials at 84 N MAIN ST, Branford, CT, 06405, with a listed phone of (203) 483-2024. NPI 1225039233 was issued on 08/02/2005.
Medicare Part D records for calendar year 2023 show 40 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $10K in drug spend.
Anesthesiology Physician is a high-volume specialty nationwide, with 56,432 enrolled providers across 56 states and an average of 860 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 | 1225039233 |
|---|---|
| Specialty | Anesthesiology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/02/2005 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
40
Total Claims
$10K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 79
- Total Day Supply
- 2,238
- Generic Drug Cost
- $795
Patient Demographics
- Average Patient Age
- 72.0 years
- Avg HCC Risk Score
- 1.67
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Insulin Lispro Kwikpen U-100 Insulin Lispro | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Anesthesiology Physician Overview
How Francisco Rivera Ferrer, MD fits within the Anesthesiology Physician landscape nationally.
56,432
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider
Francisco Rivera Ferrer, MD's 40 claims are below the specialty average of 860.
Nearby Anesthesiology Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Rivera Ferrer.
Dr. Ghaith Abdulkarim
M.D.
New Haven, CT
Dr. Hanief Abrahams
M.D.
Greenwich, CT
Dr. Jonathan Abrams
MD
Hartford, CT
Dr. Robert Adam
M.D.
Willimantic, CT
Dr. Jacob Aftel
MD
Sharon, CT
Compare Anesthesiology 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 Connecticut medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Anesthesiology 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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How to Find a Doctor
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Connecticut
Frequently Asked Questions
What is Francisco Rivera Ferrer, MD's specialty? ▼
Francisco Rivera Ferrer, MD specializes in Anesthesiology Physician and practices in Branford, Connecticut. Credentials: MD.
How much does Francisco Rivera Ferrer, MD prescribe under Medicare Part D? ▼
In 2023, Francisco Rivera Ferrer, MD wrote 40 Medicare Part D claims totaling $10K in drug costs for N/A beneficiaries.
Where is Francisco Rivera Ferrer, MD located? ▼
Francisco Rivera Ferrer, MD is located at 84 N MAIN ST, Branford, CT, 06405. Phone: (203) 483-2024.
What is Francisco Rivera Ferrer, MD's NPI number? ▼
Francisco Rivera Ferrer, MD's National Provider Identifier (NPI) is 1225039233, issued on 08/02/2005.
How many Anesthesiology Physician providers are there in the US? ▼
There are 56,432 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
What drugs does Francisco Rivera Ferrer, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Francisco Rivera Ferrer, MD's most frequently prescribed drugs include Insulin Lispro Kwikpen U-100. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Francisco Rivera Ferrer, MD accept Medicare? ▼
Francisco Rivera Ferrer, MD appears in CMS Medicare data with 40 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Francisco Rivera Ferrer, MD's credentials? ▼
Francisco Rivera Ferrer, MD's NPI is 1225039233 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.