Physician Profile
William M. Clark, M.D.
Unclaimed ProfileAbout Dr. Clark
William M. Clark, M.D. practices psychiatry in Chicago, IL. William is a 1986 graduate of University of North Carolina at Chapel Hill School of Medicine. According to Medicare claims data, William cared for 217 Medicare patients across 946 services. 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, psychotherapy with evaluation and management visit, 30 minutes, and psychotherapy with evaluation and management visit, 45 minutes.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (312) 373-7300
- Email not available
Practice Locations
737 N MICHIGAN AVE SUITE 1200
Chicago, IL 60611
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
Most searched conditions
Anxiety, trauma, and obsessive-compulsive
Mood disorders
Psychotic disorders
Substance-related and addictive
Addiction & Substance Use
Cognitive and adjustment
Eating Disorders
Eating, sleep, and somatic
Mood & Depression
Neurodevelopmental and behavioral
Personality and dissociative
Sleep & Wakefulness
Procedures & services
Most searched procedures
- Anxiety and depression treatment
- Cognitive behavioral therapy
- Medication management
- Psychiatric evaluation
- Telepsychiatry
Assessment
Addiction care
Addiction Medicine
Assessments
Brain stimulation
Consultations
Diagnostics
Inpatient care
Interventional psychiatry
Psychotherapy
Sleep Medicine
Specialized care
Therapy
Therapy and care
Procedures Most Often Billed to Medicare
946 services · 217 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy with evaluation and management visit, 30 minutes | Treatment | 90833 |
265 | More often than most peers in Psychiatry |
| Psychotherapy with evaluation and management visit, 45 minutes | Treatment | 90836 |
202 | More often than most peers in Psychiatry |
| Psychiatric diagnostic evaluation with medical services | Treatment | 90792 |
12 | |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
467 | More 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 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
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 — 32 related providers in 4 groups
Other psychiatrists in Chicago 8
Same specialty, same city.
Trained at University of North Carolina at Chapel Hill School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1986 at University of North Carolina at Chapel Hill School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Psychotherapy with evaluation and management visit, 30 minutes 8
Providers in IL who bill this service to Medicare most often.
Common questions
What does William M. Clark specialize in?
William M. Clark is a psychiatrist in Chicago, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychiatry”.
NPI registry
Where is William M. Clark located?
William M. Clark is listed at 737 N Michigan Ave Suite 1200, Chicago, IL 60611. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is William M. Clark's phone number?
The number on file is (312) 373-7300. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is William M. Clark's NPI number?
William M. Clark's National Provider Identifier is 1578574000. 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 William M. Clark train?
William M. Clark attended University of North Carolina at Chapel Hill School of Medicine, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
How long has William M. Clark been practicing?
William M. Clark has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
What does William M. Clark do most often?
According to Medicare billing data, William M. Clark provides treatments such as psychotherapy with evaluation and management visit, 30 minutes and psychotherapy with evaluation and management visit, 45 minutes, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has William M. Clark confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William M. Clark. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.