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Edit this profileAt a glance
- 1850 Gateway Dr, Sycamore, IL 60178
About Dr. Dennison
Based in Sycamore, IL, Thomas Dennison, M.D. is listed in the NPI registry under psychiatry. Thomas graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1981. Medicare claims data shows Thomas provided 228 services to 74 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. NPI 1588673719 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (815) 758-8671
- Email not available
Practice Locations
1850 GATEWAY DR
Sycamore, IL 60178
Conditions Commonly Evaluated or Treated
Within Psychiatry generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Cognitive and adjustment
- Delirium
- Dementia with behavioral symptoms
- Prolonged grief disorder
Eating, sleep, and somatic
- Binge-eating disorder
- Bulimia nervosa
- Illness anxiety disorder
Geriatric care
- Agitation in Dementia
Mental Health
- Bipolar Depression
Neurodevelopmental and behavioral
- Intellectual disability
- Autism
- Oppositional defiant disorder
Most searched conditions
Anxiety, trauma, and obsessive-compulsive
Mood disorders
Psychotic disorders
Substance-related and addictive
Addiction & Substance Use
Eating Disorders
Mood & Depression
Personality and dissociative
- Borderline personality disorder
- Dissociative disorders
- Narcissistic personality disorder
Sleep & Wakefulness
Procedures & services
Advanced treatment
- Esketamine treatment
Assessment
- Cognitive and memory screening
- Suicide and safety risk assessment
Most searched procedures
- Anxiety and depression treatment
- Cognitive behavioral therapy
- Medication management
- Psychiatric evaluation
- Telepsychiatry
Addiction care
Addiction Medicine
- Alcohol Detox and Withdrawal Management
- Dual Diagnosis Treatment
- Suboxone Treatment and MAT
Assessments
- Adult ADHD Testing
- Autism testing
- Cognitive Assessment
Brain stimulation
- Neurofeedback
- Vagus Nerve Stimulation
Consultations
- Psychiatric Second Opinion
Diagnostics
- Neuropsychological Testing
- Psychiatric Genetic Testing
Inpatient care
- Inpatient Psychiatric Care
Interventional psychiatry
- Spravato Treatment
Psychotherapy
Sleep Medicine
Specialized care
- Light Therapy
Therapy
Therapy and care
- Family therapy
- Group psychotherapy
- Supportive psychotherapy
Procedures Most Often Billed to Medicare
228 services · 74 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
228 | More often than most peers in Psychiatry |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other psychiatrists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 18 related providers in 3 groups
Other psychiatrists in Sycamore 2
Same specialty, same city.
Trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) 8
Other providers in the same specialty who trained at the same institution.
Class of 1981 at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Thomas Dennison specialize in?
Thomas Dennison is a psychiatrist in Sycamore, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychiatry”.
NPI registry
Where is Thomas Dennison located?
Thomas Dennison is listed at 1850 Gateway Dr, Sycamore, IL 60178. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Thomas Dennison's phone number?
The number on file is (815) 758-8671. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Thomas Dennison?
Thomas Dennison's National Provider Identifier is 1588673719. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Thomas Dennison train?
Thomas Dennison attended University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb), graduating in 1981. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Thomas Dennison have?
Thomas Dennison has 45 years experience. Calculated from a graduation year of 1981, reported in the CMS National Downloadable File.
CMS public data
What does Thomas Dennison do most often?
According to Medicare billing data, Thomas Dennison the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Thomas Dennison's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Thomas Dennison. If this is you, claiming it is free.
Guide.md
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