William Halsted James, PH.D.

Clinical Psychologist

(516) 785-0323Wantagh, NY
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

With over 33 years in psychology, William Halsted James, PH.D. is a long-established clinical psychologist in Wantagh. With 33+ years of experience, he has been practicing in the Wantagh area. CMS Medicare data shows his patients commonly have high cholesterol, anxiety, and mood disorders.

1 of 549 Psychologist providers in NYSee all Psychologist in Wantagh33+ years experienceNPI since 2007

Older · 614dNPPES updated 2024-08-30 · verify on CMS

Contact & Location

Practice Location

3305 Jerusalem Ave Ste 207, Wantagh, NY 11793-2028

Fax: (516) 785-6026
CMS Clinical Data

How Does This Doctor Compare?

Medicare Patients

63

Unique beneficiaries

Standard volume

Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.

Patient Condition Panel

What This Doctor Treats Most

Based on Medicare claims data — here's what patients commonly see this doctor for

Based on Medicare data, this doctor primarily manages High Cholesterol, Anxiety Disorders, and Mood Disorders.

High Cholesterol
75%

Elevated cholesterol or triglycerides that increase heart disease risk

Anxiety Disorders
75%

Excessive worry or fear that interferes with daily life

Mood Disorders
67%

Conditions affecting emotional state, including depression and bipolar disorder

Hypertension
56%

High blood pressure — a leading risk factor for heart disease and stroke

Depression
54%

A mood disorder causing persistent sadness and loss of interest in activities

Arthritis
41%

Joint inflammation causing pain, swelling, and stiffness

Ischemic Heart Disease
24%

Reduced blood flow to the heart muscle, commonly known as coronary artery disease

Cancer
24%

Diseases involving abnormal cell growth with potential to spread to other body parts

GeneralBehavioralNational avg

Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Career Journey
  1. Board certified · Aug 29, 2024

    CMS-verified certification date

  2. 33 years in practice

    Senior practitioner

PsychologistBehavioral Health & Social Service Providers

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

Taxonomy: 103TC0700X

Practice Footprint

Mailing address

1512 Wantagh Ave, Wantagh, NY 11793

Differs from practice location

Virtual Psychology Care With William Halsted James

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with William Halsted James for cholesterol management, anxiety counseling, mood disorder follow-ups — no travel to Wantagh required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.

Frequently Asked Questions

Common questions about William Halsted James

Dr. James is listed as active in the NPI registry with telehealth listed in Wantagh, NY. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (516) 785-0323.

Verified across 3 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Physician Comparator. See Data Methodology.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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