Doctor profile · Federal record

Dr. Simon Onderi, M.D

Neuroradiology Physician (CMS: Diagnostic Radiology) · Neuroradiology Physician · Diagnostic Radiology Physician · New Haven, CT

  • NPI 1871850438
  • Accepts Medicare
  • 14 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
20 York St
New Haven, CT 06510
(203) 688-1010
Additional location
840 Harrison Ave
Boston, MA 02118
(617) 638-6610
Mailing address
Po Box 208042
New Haven, CT 065208042

Credentials & registration

NPPES · NUCC
NPI registered
April 2012 — 14 yrs on file
Profile last updated
June 26, 2019
Year of graduation
2012 — 14 yrs since
Specialty taxonomy
2085N0700X — NUCC code
State licenses (2)
Connecticut #63486 · New York #295532

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1871850438. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,785
Distinct HCPCS
10
Medicare allowed
$89,434
HCPCS Description Services Patients Avg allowed
71045 X-ray of chest, 1 view 429 343 $9
70450 Ct scan head or brain without contrast 326 302 $42
70496 Ct scan of blood vessels of head with contrast 151 147 $88
70498 Ct scan of blood vessels of neck with contrast 151 148 $85
72125 Ct scan of upper spine without contrast 103 103 $49
71046 X-ray of chest, 2 views 97 96 $11
70551 Mri scan of brain without contrast 62 62 $74
70553 Mri scan of brain before and after contrast 57 57 $115
74177 Ct scan of abdomen and pelvis with contrast 49 49 $91
71275 Ct scan of blood vessels of chest with contrast 34 34 $90

In context: peer comparison

Among 9 peers in New Haven Neuroradiology Physician, average services per provider: 140. This provider delivers 13× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Simon Onderi's medical specialty?
Dr. Simon Onderi practices Neuroradiology Physician in New Haven, CT.
Where does Dr. Simon Onderi practice?
Dr. Simon Onderi practices at 20 York St, New Haven, CT 06510. Office phone: 2036881010.
What is Dr. Simon Onderi's NPI?
Dr. Simon Onderi's National Provider Identifier (NPI) is 1871850438, issued by NPPES.
Does Dr. Simon Onderi accept Medicare assignment?
Yes. Dr. Simon Onderi accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Simon Onderi commonly perform?
Top Medicare-reported procedures in 2023: X-ray of chest, 1 view (HCPCS 71045); Ct scan head or brain without contrast (HCPCS 70450); Ct scan of blood vessels of head with contrast (HCPCS 70496). Source: CMS Medicare Physician & Other Practitioners file.