Physician Profile
Mary St.john, M.D.
Unclaimed ProfileAbout Dr. St.john
Mary St.john, M.D. is a healthcare provider in Beaufort, SC specializing in psychiatry. Mary trained at Louisiana State University School of Medicine in New Orleans, graduating in 1978. According to Medicare claims data, Mary cared for 56 Medicare patients across 639 services. The services billed most often include psychotherapy with evaluation and management visit, 1 hour, established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
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
- (843) 524-0449
- Email not available
Practice Locations
2719 BOUNDARY ST
Beaufort, SC 29906
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
- ADHD
- Anxiety
- Bipolar disorder
- Depression
- Schizophrenia
- Trauma
Anxiety, trauma, and obsessive-compulsive
- Agoraphobia
- OCD
- Panic disorder
- Social anxiety disorder
- Specific phobias
Mood disorders
- Premenstrual dysphoric disorder
- Seasonal affective disorder
Psychotic disorders
- Schizoaffective disorder
Substance-related and addictive
- Alcohol use disorder
- Opioid use disorder
Addiction & Substance Use
- Drug addiction
- Gambling Addiction
Cognitive and adjustment
- Dementia with behavioral symptoms
- Prolonged grief disorder
Eating Disorders
- Binge eating
- Eating disorders
Eating, sleep, and somatic
- Illness anxiety disorder
Mood & Depression
- Postpartum depression
Neurodevelopmental and behavioral
- Autism
- Oppositional defiant disorder
Personality and dissociative
- Borderline personality disorder
- Dissociative disorders
- Narcissistic personality disorder
Sleep & Wakefulness
- Insomnia and Sleep Problems
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 counseling
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
- Sleep counseling
Specialized care
- Light Therapy
Therapy
- Acceptance and commitment therapy
- Dialectical Behavior Therapy
- Somatic experiencing
Therapy and care
- Family therapy
- Group psychotherapy
- Supportive psychotherapy
Procedures Most Often Billed to Medicare
639 services · 56 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy with evaluation and management visit, 1 hour | Treatment | 90838 |
219 | More often than most peers in Psychiatry |
| Psychotherapy with evaluation and management visit, 45 minutes | Treatment | 90836 |
103 | As often as other peers in Psychiatry |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
170 | More than most peers in Psychiatry |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
147 | 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 in Beaufort 8
Same specialty, same city.
Trained at Louisiana State University School of Medicine in New Orleans 8
Other providers in the same specialty who trained at the same institution.
Class of 1978 at Louisiana State University School of Medicine in New Orleans 8
Providers who graduated from the same medical school in the same year.
More connections — 7 related providers in 1 group
Also performs Psychotherapy with evaluation and management visit, 1 hour 7
Providers in SC who bill this service to Medicare most often.
Common questions
What is Mary St.john's specialty?
Mary St.john is a psychiatrist in Beaufort, SC. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychiatry”.
NPI registry
Where can I find Mary St.john?
Mary St.john is listed at 2719 Boundary St, Beaufort, SC 29906. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Mary St.john?
The number on file is (843) 524-0449. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Mary St.john's NPI number?
Mary St.john's National Provider Identifier is 1457553984. 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 Mary St.john's education?
Mary St.john attended Louisiana State University School of Medicine in New Orleans, graduating in 1978. This comes from the CMS National Downloadable File.
CMS public data
How long has Mary St.john been practicing?
Mary St.john has 48 years experience. Calculated from a graduation year of 1978, reported in the CMS National Downloadable File.
CMS public data
What is Mary St.john known for?
According to Medicare billing data, Mary St.john provides treatments such as psychotherapy with evaluation and management visit, 1 hour 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 Mary St.john confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mary St.john. 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.