Dr. Daniel Eduardo Oyon , MD
Neurological Surgery β’ Chicago, IL
251 E Huron St
Chicago, IL 60611
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
251 E Huron St
Chicago, IL 60611
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Neurological Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Open Payments general payments, program year 2025
All general payments: $1,175.78 across 7 records.
By nature of payment
- Travel and Lodging: $925.18 across 3 records.
- Food and Beverage: $250.60 across 4 records.
Reporting-company totals
- Stryker Corporation: $1,175.78 across 7 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
NPI first issued
2015
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Can order Medicare-covered services
CMS lists Dr. Oyon as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Chicago and Illinois
172 active clinicians are listed under Neurological Surgery with a practice address in Chicago, IL (375 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Chicago
20.9% of these 172 clinicians have the CMS telehealth indicator.
44.2% of these 172 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $229.13 in 2024 to $1,175.78 in 2025.
- 2024: $229.13
- 2025: $1,175.78
Sources: CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 β December 31, 2025): fewer than 11 records totaling $1,175.78.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Stryker Corporation |
Travel and Lodging
Cash or cash equivalent
|
CORE | General | $842.76 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
|
SCOPIS ENT | General | $157.36 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
|
SCOPIS ENT | General | $48.94 |
| Stryker Corporation |
Travel and Lodging
Cash or cash equivalent
|
CORE | General | $42.82 |
| Stryker Corporation |
Travel and Lodging
Cash or cash equivalent
|
CORE | General | $39.60 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
|
CORE | General | $36.51 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
|
CORE | General | $7.79 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207T00000X
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSSources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Acute Care
APNACNP
Obstetrics & Gynecology
Nurse Practitioner - Acute Care
Advanced Practice Registered Nurse, Certified Nurse Practitioner
Internal Medicine - Interventional Cardiology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 251 E HURON ST, CHICAGO, IL 60611 (Tel: 3129262000)
Registered at 4038 N KENMORE AVE APT 3, CHICAGO, IL 606135476 (Tel: 6789234561)
Recorded as DANIEL OYON, MD
Neurological Surgery (license number reported to NPPES: IL 125.072729)
NPI status registered as active in NPPES database
Registered at 900 N LAKE SHORE DR, APT 1102, CHICAGO, IL 606111500 (Tel: 6789234561)
Registered at 900 N LAKE SHORE DR, APT 1102, CHICAGO, IL 606111500 (Tel: 6789234561)
Recorded as DANIEL OYON
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Neurological Surgery Specialists in Chicago
- Denise Brunozzi
- Dr. Matthew Koch, MD
- Dr. George Cybulski, MD
- Dr. Ashley Selner, MD, PhD
- Dr. Gnel Pivazyan, MD
- Dr. Ahmet Atik, MD
Mailing Address
4038 N Kenmore Ave Apt 3
Chicago, IL 606135476
Phone: 6789234561