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Edit this profileAt a glance
- 75 N Country Rd, Port Jefferson, NY 11777
About Dr. Olschewski
Jamie Olschewski, MD is a healthcare provider in Port Jefferson, NY specializing in psychiatry. According to Medicare claims data, Jamie cared for 118 Medicare patients across 323 services. 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, hospital discharge day management, 30 minutes or less, and psychiatric diagnostic evaluation with medical services. This provider record is associated with NPI 1245790468.
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
- (631) 473-1320
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
75 N COUNTRY RD
Port Jefferson, NY 11777
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
Eating, sleep, and somatic
Geriatric care
Mental Health
Neurodevelopmental and behavioral
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
Sleep & Wakefulness
Procedures & services
Advanced treatment
Assessment
Most searched procedures
- Anxiety and depression treatment
- Cognitive behavioral therapy
- Medication management
- Psychiatric evaluation
- Telepsychiatry
Addiction care
Addiction Medicine
Assessments
- Adult ADHD Testing
- Autism testing
- Cognitive Assessment
Brain stimulation
Consultations
Diagnostics
Inpatient care
Interventional psychiatry
Psychotherapy
Sleep Medicine
Specialized care
Therapy
Therapy and care
Procedures Most Often Billed to Medicare
323 services · 118 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychiatric diagnostic evaluation with medical services | Treatment | 90792 |
22 | As often as other peers in Psychiatry |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Office visit | 99231 |
262 | More often than most peers in Psychiatry |
| Hospital discharge day management, 30 minutes or less | Office visit | 99238 |
39 | 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 2
Same specialty, same street address — most likely the same department or group.
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.
Other psychiatrists in Port Jefferson 6
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2018 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Psychiatric diagnostic evaluation with medical services 8
Providers in NY who bill this service to Medicare most often.
Common questions
What does Dr. Olschewski specialize in?
Dr. Olschewski is a psychiatrist in Port Jefferson, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychiatry”.
NPI registry
Where is Dr. Olschewski located?
Dr. Olschewski is listed at 75 N Country Rd, Port Jefferson, NY 11777. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Olschewski's phone number?
The number on file is (631) 473-1320. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Olschewski's NPI number?
Dr. Olschewski's National Provider Identifier is 1245790468. 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 Dr. Olschewski go to medical school?
Dr. Olschewski attended Other, graduating in 2018. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Olschewski been practicing?
Dr. Olschewski has 8 years experience. Calculated from a graduation year of 2018, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Olschewski do most often?
According to Medicare billing data, Dr. Olschewski provides treatments such as psychiatric diagnostic evaluation with medical services, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Olschewski confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Olschewski. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.