Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Thomas Dennison, MD

Individual provider Psychiatry Physician · NPI 1588673719

Thomas Dennison, MD practises Psychiatry in Sycamore, Illinois. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1981, 45 years ago. Practices with Central Dupage Physician Group, a 1,094-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
45
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
Licensed in
IL
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1850 Gateway Dr
Sycamore, IL 60178-3192 Not confirmed with CMS for 14 years — call before visiting
Phone: (815) 758-8671
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 036-065089 (IL)

Record details

NPI number1588673719
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 5, 2006
Last updated in NPPESSeptember 10, 2012

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1981 (45 years in practice)
Group practice Central Dupage Physician Group — 1094 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients75
Services billed 234 a service is one billed item, such as a visit, a test or a procedure
Average patient age68

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Northwestern Medicine Central Dupage Hospital Hospital · Winfield, IL
  • Northwestern Medicine Kishwaukee Hospital Hospital · Dekalb, IL

Colleagues at Central Dupage Physician Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1094 clinicians in the practice; 12 are shown here.

Other providers in Sycamore