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Edit this profileAt a glance
- 1600 Sw Archer Rd, Gainesville, FL 32610
About Dr. Williamson
John B. Williamson, PhD is a clinical psychologist practicing in Gainesville, FL. Medicare claims data shows John provided 235 services to 121 patients. The services billed most often include administration of psychological or neuropsychological test by technician, each additional 30 minutes, evaluation of neuropsychological test, each additional hour, and administration of psychological or neuropsychological test by technician, first 30 minutes. This provider record is associated with NPI 1215224977.
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
- (352) 265-0301
- Email not available
Practice Locations
1600 SW ARCHER RD
Gainesville, FL 32610
Concerns and Conditions Addressed
Within Clinical Psychology 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
Abuse & trauma
Addiction
Anxiety
Behavioral
Child & adolescent
Cognitive
Dissociative
Eating & Body Image
Health & Pain
Identity
Interpersonal
Life transitions
Mood & Emotion
- Anger issues
- Bipolar disorder
- Illness anxiety disorder
- Panic disorder
- Postpartum depression
- Social anxiety disorder
- Specific phobias
Neurodevelopmental
Personal Growth
Personality
Self-harm & crisis
Sensory & neurological
Severe mental illness
Sleep
Stress & Lifestyle
Stress & lifestyle
Work & identity
Procedures & services
Most searched procedures
Assessments
Behavioral Interventions
- Acceptance and commitment therapy (ACT)
- Anger management
- Dialectical behavior therapy (DBT)
- Exposure and response prevention (ERP)
- Habit reversal training
- Prolonged exposure therapy
Brain-based therapies
Child & adolescent
Crisis & safety
Group Programs
Individual therapy
Interpersonal
Mind-Body
Parenting & Support
Psychodynamic & Integrative
- Internal family systems (IFS)
- Interpersonal psychotherapy
- Psychodynamic psychotherapy
- Schema Therapy
Relationship & family
Skill building
Sleep & Health
Specialized therapy
Stress & Lifestyle
Testing & evaluation
- ADHD Evaluation
- Bariatric Surgery Evaluation
- Emotional Support Animal Evaluation
- Forensic psychological evaluation
- Neuropsychological Testing
- Psychoeducational Testing
Therapy formats
Trauma therapy
Procedures Most Often Billed to Medicare
235 services · 121 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Administration of psychological or neuropsychological test by technician, each additional 30 minutes | Treatment | 96139 |
137 | Less often than most peers in Clinical Psychologist |
| Evaluation of neuropsychological test, each additional hour | Treatment | 96133 |
27 | Less often than most peers in Clinical Psychologist |
| Administration of psychological or neuropsychological test by technician, first 30 minutes | Treatment | 96138 |
25 | Less often than most peers in Clinical Psychologist |
| Evaluation of neuropsychological test, first hour | Treatment | 96132 |
25 | Less often than most peers in Clinical Psychologist |
| Psychiatric diagnostic evaluation | Treatment | 90791 |
21 | Less often than most peers in Clinical Psychologist |
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.
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.
Other clinical psychologists in Gainesville 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 15 related providers in 2 groups
Class of 2004 at Other 7
Providers who graduated from the same medical school in the same year.
Also performs Administration of psychological or neuropsychological test by technician, each additional 30 minutes 8
Providers in FL who bill this service to Medicare most often.
Common questions
What does Dr. Williamson specialize in?
Dr. Williamson is a clinical psychologist in Gainesville, FL. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Williamson located?
Dr. Williamson is listed at 1600 Sw Archer Rd, Gainesville, FL 32610. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Williamson's phone number?
The number on file is (352) 265-0301. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Williamson?
Dr. Williamson's National Provider Identifier is 1215224977. 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 Dr. Williamson go to medical school?
Dr. Williamson attended Other, graduating in 2004. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Williamson have?
Dr. Williamson has 22 years experience. Calculated from a graduation year of 2004, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Williamson do most often?
According to Medicare billing data, Dr. Williamson provides treatments such as administration of psychological or neuropsychological test by technician, each additional 30 minutes and evaluation of neuropsychological test, each additional hour. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Williamson's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Williamson. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.