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Edit this profileAt a glance
- 18837 Iroquois Way, Lakeville, MN 55044
About Dr. Thelen
Gregory LLOYD THELEN Thelen, MD is a healthcare provider in Lakeville, MN specializing in psychiatry. Gregory trained at Wright State University Boonshoft School of Medicine, graduating in 1992. According to Medicare claims data, the services billed most often include subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes. This provider record is associated with NPI 1821186768.
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
- (612) 467-1921
- Email not available
Practice Locations
18837 IROQUOIS WAY
Lakeville, MN 55044
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
- Dementia with behavioral symptoms
- Prolonged grief disorder
Eating Disorders
Eating, sleep, and somatic
Mood & Depression
Neurodevelopmental and behavioral
Personality and dissociative
- Borderline personality disorder
- Dissociative disorders
- Narcissistic personality disorder
Sleep & Wakefulness
Procedures & services
Most searched procedures
- Anxiety and depression treatment
- Cognitive behavioral therapy
- Medication management
- Psychiatric evaluation
- Telepsychiatry
Assessment
- Suicide and safety risk assessment
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
- Anger Management Counseling
- Couples counseling
- EMDR Therapy
- Exposure and Response Prevention
Sleep Medicine
Specialized care
- Light Therapy
Therapy
Therapy and care
- Family therapy
- Group psychotherapy
- Supportive psychotherapy
Procedures Most Often Billed to Medicare
28 services · 17 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Office visit | 99231 |
28 | Less 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.
Trained at Wright State University Boonshoft School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1992 at Wright State University Boonshoft School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Dr. Thelen's specialty?
Dr. Thelen is a psychiatrist in Lakeville, MN. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychiatry”.
NPI registry
Where can I find Dr. Thelen?
Dr. Thelen is listed at 18837 Iroquois Way, Lakeville, MN 55044. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Thelen?
The number on file is (612) 467-1921. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Thelen's NPI number?
Dr. Thelen's National Provider Identifier is 1821186768. 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
What is Dr. Thelen's medical education?
Dr. Thelen attended Wright State University Boonshoft School of Medicine, graduating in 1992. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Thelen been practicing?
Dr. Thelen has 34 years experience. Calculated from a graduation year of 1992, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Thelen known for?
According to Medicare billing data, Dr. Thelen 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
Has Dr. Thelen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Thelen. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.