Provider Profile
Alexander T. O'Brien, PMHNP
Unclaimed ProfileAbout Alexander O'brien
Listed in the NPI registry as a nurse practitioner — psychiatric/mental health, Alexander T. O'Brien, PMHNP practices in Chestnut Hill, MA. According to Medicare claims data, Alexander cared for 112 Medicare patients across 347 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (617) 469-0300
- Email not available
Practice Locations
300 SOUTH ST
Chestnut Hill, MA 02467
Conditions and Services Within This Provider's Scope
Within Nurse Practitioner - Psychiatric/Mental Health 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
Addiction
- Gambling disorder
- Quitting smoking
- Screen Addiction
Addiction & substance use
- Alcohol use disorder
- Drug addiction
Anxiety & panic
- Agoraphobia
- Anxiety
- Panic disorder
- Social anxiety disorder
- Specific phobias
Attention & learning
- ADHD
- Autism
Behavioral health
- Porn addiction
- Self-harm
Behavioral issues
- Anger issues
Child & adolescent
- Oppositional defiant disorder
- Severe Temper Tantrums and Meltdowns
Cognitive disorders
- Dementia
- Executive dysfunction
Cognitive issues
- Brain Fog and Mental Fatigue
- Dementia with behavioral symptoms
- Mild cognitive impairment
Crisis & safety
- Suicidal thoughts
Eating disorders
- Anorexia nervosa
- Binge eating
- Eating disorders
Medication side effects
- Involuntary Twitches from Meds
Mood disorders
- Bipolar disorder
- Depression
- Emotional Numbness
- Menopause Mood Swings and Anxiety
- Mood swings
- Postpartum depression
- Premenstrual dysphoric disorder
- Seasonal affective disorder
Obsessions & compulsions
- Body image issues
- Hoarding
- OCD
- Skin picking and hair pulling
Personality disorders
- Borderline personality disorder
Psychotic disorders
- Delusional disorder
- Hearing Voices and Hallucinations
- Schizoaffective disorder
- Schizophrenia
Sleep
- Chronic Nightmares
- Insomnia and Sleep Problems
- Neurologic sleep disorders
Stress & lifestyle
- Burnout
- Chronic stress
- Gaslighting and manipulation
Trauma & stress
- Adjustment disorder
- Dissociative disorders
- Illness anxiety disorder
- Prolonged grief disorder
- Trauma
Procedures & services
Addiction treatment
- Dual Diagnosis Addiction Treatment
- Suboxone Treatment and MAT
- Vivitrol and Naltrexone Treatment
Consultations
- Holistic Mental Health Consultation
- Transcranial Magnetic Stimulation (TMS) Consultation
Crisis care
- Urgent Psychiatric Consultation
Evaluations & paperwork
- Child Psychiatric Evaluation
- Cognitive Assessment
- Disability Mental Health Evaluation
- Gender-Affirming Mental Health Letter
- Psychiatric Clearance for Surgery
- School Accommodation Evaluation
- Treatment-Resistant Depression Evaluation
Evaluations & testing
- ADHD Testing and Diagnosis
- Adolescent Psychiatric Evaluation
- DNA drug response testing
- Emotional Support Animal (ESA) Evaluation
- FMLA and Mental Health Leave Paperwork
- Postpartum Mental Health Screening
- Psychiatric evaluation
- Second Opinion on Mental Health Diagnosis
Interventional treatments
- Ketamine Therapy Consultation
- Spravato (Esketamine) Treatment
Medication management
- Antidepressant Prescription
- Antipsychotic Medication Management
- Anxiety Medication Management
- Benzodiazepine Tapering
- Lab Work for Psychiatric Medications
- Lithium Monitoring and Blood Level Checks
- Long-Acting Antipsychotic Shot
- Medication management
- Mood Stabilizer Management
- Non-Stimulant ADHD Medication Management
- Prescription Refill Visit
- Sleep Medication Management
- Smoking Cessation Medication Visit
- Stimulant Medication Monitoring
- Switching Antidepressants
- Tapering Off Psychiatric Medication
- Tardive Dyskinesia Treatment
- Weight Management for Psychiatric Med Side Effects
Telehealth
- Telepsychiatry
Therapy
- Acceptance and commitment therapy (ACT)
- Anger Management Counseling
- Bereavement counseling
- Insomnia Treatment (CBT-I)
- Somatic Calming and Relaxation Training
- Suicide safety planning
Therapy & counseling
- Cognitive Behavioral Therapy (CBT)
- Couples and Family Mental Health Counseling
- Dialectical Behavior Therapy (DBT) Skills
- Exposure and Response Prevention
- Mindfulness-based stress reduction
- Prolonged exposure therapy
- Supportive psychotherapy
Procedures Most Often Billed to Medicare
347 services · 112 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Psychiatric diagnostic evaluation with medical services | Treatment | 90792 |
23 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
176 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
117 |
| Hospital discharge day management, more than 30 minutes | Office visit | 99239 |
31 |
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 nurse practitioners at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
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 — 14 related providers in 2 groups
Other nurse practitioners in Chestnut Hill 6
Same specialty, same city.
Also performs Psychiatric diagnostic evaluation with medical services 8
Providers in MA who bill this service to Medicare most often.
Common questions
What does Alexander T. O'Brien specialize in?
Alexander T. O'Brien is a nurse practitioner in Chestnut Hill, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Nurse Practitioner — Psychiatric/Mental Health”.
NPI registry
Where is Alexander T. O'Brien located?
Alexander T. O'Brien is listed at 300 South St, Chestnut Hill, MA 02467. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Alexander T. O'Brien's phone number?
The number on file is (617) 469-0300. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Alexander T. O'Brien's NPI number?
Alexander T. O'Brien's National Provider Identifier is 1598420770. 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
How long has Alexander T. O'Brien been practicing?
Alexander T. O'Brien has 5+ years experience. Registered with an NPI since 2021. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What does Alexander T. O'Brien do most often?
According to Medicare billing data, Alexander T. O'Brien 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 Alexander T. O'Brien confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Alexander T. O'Brien. 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.