Doctor Profile

Mental Health · Psychiatry

Thomas Dennison

MD · Psychiatry · University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb)
1850 GATEWAY DR
Sycamore, IL 60178
✓ Accepts Medicare 💻 Offers Telehealth 🎓 45+ Years Practicing
152
Medicare Patients / yr
2
Procedures Billed
45
Years Practicing
1
Hospital Affiliations
Data Source: Identity from NPPES (2026). Procedure & patient volume from CMS Medicare Provider Utilization & Payment Data (2023). Hospital affiliations from CMS Physician Compare. We display publicly reported data — no personal information required to view any of it.
Reviewed by: Wes Ward, Founder & Data Lead • View our methodology

Important: We are not affiliated with Medicare, CMS, or Thomas Dennison's practice. This page displays publicly available CMS data to help you research Medicare providers. We do not sell insurance or represent any insurance company. For official enrollment and complete plan information, visit Medicare.gov or call 1-800-MEDICARE.

Medicare Plans That Cover Dr. Dennison

See which plans Dr. Dennison accepts

We're pulling plan acceptance data directly from insurance carrier provider directories. Until that feed is live for Illinois, the fastest way to find a Medicare plan that covers Dr. Dennison is to compare every Medicare Advantage and Part D plan available near 60178, IL — the Psychiatry's office can quickly confirm which of the top local plans they accept.

Compare Medicare Plans near 60178, IL →

Or call the office at (630) 232-0280 to confirm acceptance directly.

What Dr. Dennison Does

Dr. Dennison served 152 Medicare patients across 400 services in the latest CMS reporting year. That's 28% below the average Psychiatry in Illinois (211 patients across 605 doctors).

ProcedureServicesMedicare Patients
Established patient office or other outpatient visit, 20-29 minutes (99213)282111
Telephone medical discussion with physician, 21-30 minutes (99443)11841

How to read this: "Services" are the total times Dr. Dennison billed Medicare for each procedure in the latest reporting year. "Patients" counts unique Medicare beneficiaries. Procedures are shown in plain English; the underlying HCPCS codes are available on request.

Hospital Affiliations

Dr. Dennison is affiliated with 1 hospital in the CMS Physician Compare database. Hospital network status depends on your Medicare Advantage plan — always verify before enrolling.

Northwestern Medicine Kishwaukee Hospital

Dekalb, IL
★★★★☆ 4/5 CMS Rating

Practice Location & Telehealth Readiness

Dr. Dennison practices at the address below. If you're evaluating Medicare coverage, location matters for in-network access and — when Dr. Dennison offers telehealth — broadband availability at your home matters for virtual visits.

Address: 1850 GATEWAY DR, Sycamore, IL 60178
Phone: (630) 232-0280

Area Safety Grade

A

Block-level crime analysis from CrimeGrade.org.

Practice Accessibility

33 min

Average commute time in this zip · 83% of residents drive to work. Practical context for patients deciding whether to make the trip. See the full neighborhood profile at BestNeighborhood.org.

Telehealth Readiness

85.1722

Households with fiber broadband — important for reliable virtual visits. Check your address at ISPReports.org.

Get directions on Google Maps →

Other Mental Health Doctors near 60178, IL

If Dr. Dennison isn't accepting new patients or isn't in your plan's network, these are the closest mental health doctors near 60178, IL:

DoctorSpecialtyMedicare Patients / yrDistance
Jayne A. BradenClinical Psychologist38<1 mi
Mardjan ForoutanPsychiatry2401.8 mi
David P. ValentinerClinical Psychologist2.1 mi
Benjamin M. GesingClinical Psychologist332.1 mi
Kristi L. BrowerClinical Psychologist422.1 mi
Nicole MaxwellClinical Psychologist2.1 mi

View all mental health doctors near 60178, IL →

How to Use This Information

Choosing a Medicare plan that covers Dr. Dennison takes three steps:

Compare Medicare Plans near 60178, IL → All Doctors near 60178, IL

Thomas Dennison: Common Questions

Does Dr. Dennison accept Medicare?
Yes. Dr. Dennison is enrolled with Medicare and listed in the CMS Provider Enrollment, Chain, and Ownership System (PECOS). Whether a specific Medicare Advantage plan covers Dr. Dennison depends on that plan's provider network. Compare Medicare plans near 60178, IL →
Where is Dr. Dennison's office?
Dr. Dennison practices at 1850 GATEWAY DR, Sycamore, IL 60178. Phone: (630) 232-0280.
What Medicare plans does Dr. Dennison accept?
Original Medicare (Parts A & B) is accepted. Medicare Advantage plan acceptance varies by carrier and plan year. Call the office at (630) 232-0280 to confirm your specific plan is accepted, or compare all Medicare plans near 60178, IL to see available options.
Does Dr. Dennison offer telehealth visits?
Dr. Dennison is registered with Medicare as offering telehealth services. Most Medicare Advantage plans cover telehealth visits at the same or similar cost as in-person visits. Check broadband availability in your area to ensure reliable connectivity for video visits.
How experienced is Dr. Dennison?
Dr. Dennison graduated in 1981 and has been practicing for approximately 45 years. In the latest CMS reporting year, Dr. Dennison treated 152 Medicare patients across 2 distinct procedure types.
How do I know if Dr. Dennison is in-network for my Medicare plan?
Network status varies by plan. The best verification steps: (1) check your plan's provider directory at the carrier's website, (2) call the office at (630) 232-0280 and ask which plans they currently accept, and (3) call the number on the back of your Medicare card. Print our doctor questions checklist →

About the Reviewer

Wes Ward

Wes Ward

Founder & Data Lead

Wes Ward reviews all doctor profiles and methodology for data accuracy. Every Medicare provider page on this site — including the utilization statistics, hospital affiliations, and geocoded practice address — goes through his data-validation pipeline before publication. We display only publicly available CMS data; you never need to enter personal information to see any of it.

With 25+ years in data analytics — including work with highly regulated genomic data at Ancestry.com — Wes brings enterprise-level rigor to healthcare transparency. He is also a co-founder of BestNeighborhood.org (neighborhood data), CrimeGrade.org (block-level safety analytics), and ISPReports.org (broadband availability for telehealth). Those sister sites power the location and telehealth-readiness context on this page.

View full profile →LinkedIn

Data sources: CMS NPPES (2026), CMS Medicare Provider Utilization & Payment Data (2023), CMS Physician Compare, CrimeGrade.org, BestNeighborhood.org, ISPReports.org. This page is for informational purposes only. Always verify coverage directly with the plan and practice. Read our full methodology →Privacy policy

Medicare Resources

Choosing the right Medicare plan involves more than just doctor coverage. These guides help you evaluate the full picture:

Does your Medicare plan cover Dr. Dennison?

Compare Plans near 60178, IL →