Provider Profile
Mary G. Walter, RN/NP, PMHNP-BC
Unclaimed ProfileAbout Mary Walter
Mary G. Walter, RN/NP, PMHNP-BC is a nurse practitioner — psychiatric/mental health practicing in Prince Frederick, MD. According to Medicare claims data, Mary cared for 151 Medicare patients across 568 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, injection of drug or substance under skin or into muscle, and psychotherapy, 45 minutes.
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
- (410) 535-5400
- Email not available
Practice Locations
976 SOLOMANS ISLAND ROAD
Prince Frederick, MD 20678
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
568 services · 151 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
183 | More than most peers in Psychiatric Nurse Practitioner |
| Psychotherapy, 45 minutes | Treatment | 90834 |
43 | |
| Psychotherapy, 1 hour | Treatment | 90837 |
22 | |
| Psychiatric diagnostic evaluation with medical services | Treatment | 90792 |
15 | |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
271 | More than most peers in Psychiatric Nurse Practitioner |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
34 |
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 in Prince Frederick 5
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2013 at Other 7
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Injection of drug or substance under skin or into muscle 8
Providers in MD who bill this service to Medicare most often.
Common questions
What kind of doctor is Mary G. Walter, RN/NP?
Mary G. Walter, RN/NP is a nurse practitioner in Prince Frederick, MD. That is the designation recorded for this NPI in the federal registry, where it is listed as “Nurse Practitioner — Psychiatric/Mental Health”.
NPI registry
What is Mary G. Walter, RN/NP's address?
Mary G. Walter, RN/NP is listed at 976 Solomans Island Road, Prince Frederick, MD 20678. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Mary G. Walter, RN/NP?
The number on file is (410) 535-5400. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Mary G. Walter, RN/NP's NPI number?
Mary G. Walter, RN/NP's National Provider Identifier is 1023449642. 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 Mary G. Walter, RN/NP train?
Mary G. Walter, RN/NP attended Other, graduating in 2013. This comes from the CMS National Downloadable File.
CMS public data
How long has Mary G. Walter, RN/NP been practicing?
Mary G. Walter, RN/NP has 13 years experience. Calculated from a graduation year of 2013, reported in the CMS National Downloadable File.
CMS public data
What procedures does Mary G. Walter, RN/NP perform?
According to Medicare billing data, Mary G. Walter, RN/NP provides treatments such as injection of drug or substance under skin or into muscle and psychotherapy, 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 G. Walter, RN/NP confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mary G. Walter, RN/NP. 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.