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Edit this profileAt a glance
- 100 Perkins Farm Drive, Suite 102, Mystic, CT 06355
About Dr. Duffy
James D. Duffy, MD is a healthcare provider in Mystic, CT specializing in psychiatry. According to Medicare claims data, the services billed most often include established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more. This provider record is associated with NPI 1831118736.
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
- (860) 870-6385
- Email not available
Practice Locations
100 PERKINS FARM DRIVE SUITE 102
Mystic, CT 06355
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
- ADHD
- Anxiety
- Bipolar disorder
- Depression
- Schizophrenia
- Trauma
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
- 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
113 services · 20 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
113 | 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.
Related specialists at this location 3
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 — 16 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1979 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Dr. Duffy's specialty?
Dr. Duffy is a psychiatrist in Mystic, CT. 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. Duffy?
Dr. Duffy is listed at 100 Perkins Farm Drive Suite 102, Mystic, CT 06355. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Duffy?
The number on file is (860) 870-6385. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Duffy's NPI number?
Dr. Duffy's National Provider Identifier is 1831118736. 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. Duffy's medical education?
Dr. Duffy attended Other, graduating in 1979. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Duffy been practicing?
Dr. Duffy has 47 years experience. Calculated from a graduation year of 1979, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Duffy known for?
According to Medicare billing data, Dr. Duffy 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. Duffy confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Duffy. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.