Dr. John Ghassan , DO
Pediatrics β’ Naperville, IL
2940 Rollingridge Rd Ste 300
Naperville, IL 605644235
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
2940 Rollingridge Rd Ste 300
Naperville, IL 605644235
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
Pediatrics: NPPES taxonomy is a reported classification, not proof of board certification.
Open Payments general payments, program year 2025
All general payments: $570.75 across 26 records.
By nature of payment
- Food and Beverage: $570.75 across 26 records.
Reporting-company totals (3 largest of 14)
- Merck Sharp & Dohme LLC: $82.78 across 4 records.
- Dexcom, Inc.: $78.10 across 2 records.
- Collegium Pharmaceutical, Inc.: $62.59 across 3 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
2018
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.
Compared with the same specialty in Naperville and Illinois
73 active clinicians are listed under Pediatrics with a practice address in Naperville, IL (3,178 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Naperville
1.4% of these 73 clinicians have the CMS telehealth indicator.
1.4% of these 73 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.
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $300.07 in 2023 to $570.75 in 2025.
- 2023: $300.07
- 2024: $1,004.19
- 2025: $570.75
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): 26 records totaling $570.75.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Dexcom, Inc. |
Food and Beverage
In-kind items and services
|
Dexcom G6 Transmitter | General | $39.48 |
| Dexcom, Inc. |
Food and Beverage
In-kind items and services
|
Dexcom G6 Transmitter | General | $38.62 |
| Supernus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
Qelbree | General | $33.72 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
UBRELVY | General | $29.86 |
| ALK-Abello, Inc |
Food and Beverage
In-kind items and services
|
NEFFY | General | $26.25 |
| KYOWA KIRIN, INC. |
Food and Beverage
In-kind items and services
|
CRYSVITA | General | $26.10 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
|
VAXELIS | General | $25.05 |
| Collegium Pharmaceutical, Inc. |
Food and Beverage
Cash or cash equivalent
|
Jornay PM | General | $24.28 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
SPRAVATO | General | $23.31 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
|
VAXNEUVANCE | General | $22.34 |
| Sanofi Pasteur Inc. |
Food and Beverage
In-kind items and services
|
FLUZONE HIGH-DOSE | General | $21.74 |
| Collegium Pharmaceutical, Inc. |
Food and Beverage
Cash or cash equivalent
|
Jornay PM | General | $21.45 |
| ALK-Abello, Inc |
Food and Beverage
In-kind items and services
|
NEFFY | General | $20.57 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
|
ROTATEQ | General | $19.98 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
SHINGRIX | General | $18.50 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
BEXSERO | General | $18.28 |
| Supernus Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
Qelbree | General | $17.91 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
PAXLOVID | General | $17.79 |
| Cranial Technologies, Inc |
Food and Beverage
Cash or cash equivalent
|
Doc Band | General | $17.35 |
| Collegium Pharmaceutical, Inc. |
Food and Beverage
Cash or cash equivalent
|
Jornay PM | General | $16.86 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
β | General | $16.24 |
| Cranial Technologies, Inc |
Food and Beverage
Cash or cash equivalent
|
Doc Band | General | $15.63 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
|
VAQTA | General | $15.41 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
|
SPRAVATO | General | $15.24 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
SHINGRIX | General | $14.85 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2023-08-08NUCC Taxonomy Code: 208000000X
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner
Family Nurse Practitioner (Board Certified)
Physician Assistant
Physician Assistant
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 2940 ROLLINGRIDGE RD STE 300, NAPERVILLE, IL 605644235 (Tel: 6306466800)
Registered at PO BOX 713260, CHICAGO, IL 606771260 (Tel: 6304699200)
Registered at 5207 MAIN ST, DOWNERS GROVE, IL 605154652 (Tel: 6309646049)
Registered at 1860 PAYSPHERE CIR, CHICAGO, IL 606740018 (Tel: 6304699200)
Pediatrics (license number reported to NPPES: IL 036.155903)
Registered at PO BOX 83458, BATON ROUGE, LA 708843458 (Tel: 2253741317)
NPI status registered as active in NPPES database
Registered at 7777 HENNESSY BLVD, BATON ROUGE, LA 708084300 (Tel: 6307457539)
Registered at 7777 HENNESSY BLVD, BATON ROUGE, LA 708084300
Recorded as JOHN GHASSAN, DO
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Pediatrics Specialists in Naperville
Healthcare providers in NapervilleMailing Address
Po Box 713260
Chicago, IL 606771260
Phone: 6304699200