NPI registry status
Active
2026 NPPES data Neuroradiology Physician NPI 1871850438 M.D
Verify on CMS → Simon Onderi, M.D
Neuroradiology Physician in New Haven, 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 2,019 in Neuroradiology 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.
What the federal data shows
Simon Onderi, M.D is a Neuroradiology Physician in New Haven, Connecticut, listed in the federal CMS National Provider Identifier registry.
- Likely
- board-certified (heuristic)
- #139
- Neuroradiology Physician rank among Connecticut specialties
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 Simon Onderi, M.D
Federal registry listing with board-eligibility signals — verify credentials with the state medical board before clinical decisions.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1871850438), first enumerated 04/19/2012.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
14 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1871850438 · Neuroradiology Physician
NPI-10 · ENUM-MID · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1871850438
- ENUM-MID 2012
- TAX-NARROW 2,019
- RX-NONE No Part D
- BOOK-THIN 39 in Connecticut
- PHOTO-ENUM Ranjit Kapil · 2012
✓
Board certification likely (heuristic, not verified)
Simon Onderi, M.D practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 14 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Simon Onderi, M.D?
Quality data not reportedPrimary specialty
Neuroradiology Physician
Specialty distribution in Connecticut
How Neuroradiology 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 Neuroradiology 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 | 1871850438 |
|---|---|
| Specialty | Neuroradiology Physician |
| Credentials | M.D |
| Gender | Male |
| NPI Issued | 04/19/2012 |
Hospital and facility affiliations
Facilities where Simon Onderi, M.D 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.
According to CMS billing records, Simon Onderi, M.D is affiliated with 14 Medicare-billing facilities across 7 states, 1 of which carry a CMS Hospital overall star rating.
Columbus Regional Healthcare System
★☆☆☆☆ 1/5
Whiteville, NC
Acute Care Hospitals
CMS CCN: 340068
Boston University Medical Center Radiologists, Inc.
Boston, MA
California Managed Imaging Medical Group Inc
Demarest, NJ
Cumberland County Hospital System Inc
Tenafly, NJ
Dhew Ind Hlth SV Hlth Svs And Mntl Hlth Adm
Phoenix, AZ
Dhhs Ihs Phoenix Area
Parker, AZ
Dhhs Phs Naihs Chinle Comprehensive Health Care Facility
Chinle, AZ
Dhhs,phs,naihs, Gallup Indian Medical Center
Gallup, NM
Gila River Health Care Corporation
Sacaton, AZ
Las Cruces Physician Services LLC
Demarest, NJ
Radiology Associates OF San Luis Obispo A Medical Group Inc
Tenafly, NJ
Valley Radiology P A
Tenafly, NJ
Westchester Medical Center Advanced Physician Services PC
Valhalla, NY
Yale University
New Haven, 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).
Neuroradiology Physician Overview
How Simon Onderi, M.D fits within the Neuroradiology Physician landscape nationally.
2,019
Neuroradiology Physician Providers in US
51
States with Neuroradiology Physician
228
Avg Claims per Provider
Nationwide Neuroradiology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Onderi, both outside Connecticut so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2012)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Neuroradiology Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Onderi.
One of 39 Neuroradiology Physician providers enrolled in Connecticut, 5 are shown here.
Dr. James Abrahams
MD
New Haven, CT
Dr. Mehmet Adin
M.D.
New Haven, CT
Dr. Manohar Aribandi
M.D.
New Haven, CT
Dr. Anu Bansal
M.D.
Hartford, CT
Dr. Richard Becker
M.D.
New Haven, CT
Compare Neuroradiology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Simon Onderi, M.D's specialty? ▼
Simon Onderi, M.D specializes in Neuroradiology Physician and practices in New Haven, Connecticut. Credentials: M.D.
Where is Simon Onderi, M.D located? ▼
Simon Onderi, M.D is located at 20 YORK ST, New Haven, CT, 06510. Phone: (203) 688-1010.
What is Simon Onderi, M.D's NPI number? ▼
Simon Onderi, M.D's National Provider Identifier (NPI) is 1871850438, issued on 04/19/2012.
How many Neuroradiology Physician providers are there in the US? ▼
There are 2,019 Neuroradiology Physician providers across 51 states in the US. The average Neuroradiology Physician provider writes 228 Medicare Part D claims per year.
Does Simon Onderi, M.D accept Medicare? ▼
Simon Onderi, M.D appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Simon Onderi, M.D's credentials? ▼
Simon Onderi, M.D's NPI is 1871850438 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.
- 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.