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Edit this profileAt a glance
- 8 Holly Dr, Syosset, NY 11791
About Dr. Krellenstein
Fred B. Krellenstein, PsyD is a clinical psychologist practicing in Syosset, NY. Fred is also listed as specializing in psychologist. According to Medicare claims data, the services billed most often include psychotherapy, 45 minutes. This provider record is associated with NPI 1538258058.
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
- (516) 921-3943
- Email not available
Practice Locations
8 HOLLY DR
Syosset, NY 11791
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
253 services · 11 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy, 45 minutes | Treatment | 90834 |
253 | More 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 1
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 Syosset 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1983 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Psychotherapy, 45 minutes 8
Providers in NY who bill this service to Medicare most often.
Common questions
What is Fred B. Krellenstein's specialty?
Fred B. Krellenstein is a clinical psychologist in Syosset, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Fred B. Krellenstein?
Fred B. Krellenstein is listed at 8 Holly Dr, Syosset, NY 11791. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Fred B. Krellenstein?
The number on file is (516) 921-3943. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Fred B. Krellenstein's NPI number?
Fred B. Krellenstein's National Provider Identifier is 1538258058. 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 Fred B. Krellenstein's education?
Fred B. Krellenstein attended Other, graduating in 1983. This comes from the CMS National Downloadable File.
CMS public data
How long has Fred B. Krellenstein been practicing?
Fred B. Krellenstein has 43 years experience. Calculated from a graduation year of 1983, reported in the CMS National Downloadable File.
CMS public data
What is Fred B. Krellenstein known for?
According to Medicare billing data, Fred B. Krellenstein provides treatments such as psychotherapy, 45 minutes. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Fred B. Krellenstein confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Fred B. Krellenstein. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.