Provider Profile
Listed in the NPI registry as a psychologist — clinical, Derek H. Loewy, PhD practices in San Diego, CA. Medicare claims data shows Derek provided 547 services to 392 patients. The services billed most often include psychotherapy, 45 minutes, psychotherapy, 30 minutes, and psychiatric diagnostic evaluation.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
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.
10052 MESA RIDGE CT SUITE 101
San Diego, CA 92121
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.
Most searched conditions
Abuse & trauma
Addiction
Anxiety
Behavioral
Child & adolescent
Cognitive
Dissociative
Eating & Body Image
Health & Pain
Identity
Interpersonal
Life transitions
Mood & Emotion
Neurodevelopmental
Personal Growth
Personality
Self-harm & crisis
Sensory & neurological
Severe mental illness
Sleep
Stress & Lifestyle
Stress & lifestyle
Work & identity
Most searched procedures
Assessments
Behavioral Interventions
Brain-based therapies
Child & adolescent
Crisis & safety
Group Programs
Individual therapy
Interpersonal
Mind-Body
Parenting & Support
Psychodynamic & Integrative
Relationship & family
Skill building
Sleep & Health
Specialized therapy
Stress & Lifestyle
Testing & evaluation
Therapy formats
Trauma therapy
547 services · 392 patients · 3 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Psychotherapy, 45 minutes | Treatment | 90834 |
305 |
| Psychotherapy, 30 minutes | Treatment | 90832 |
151 |
| Psychiatric diagnostic evaluation | Treatment | 90791 |
91 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Loewy is a psychologist in San Diego, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychologist — Clinical”.
NPI registry
Dr. Loewy is listed at 10052 Mesa Ridge CT Suite 101, San Diego, CA 92121. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (858) 657-0550. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Loewy's National Provider Identifier is 1457635963. 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
Dr. Loewy attended Other, graduating in 1996. This comes from the CMS National Downloadable File.
CMS public data
Dr. Loewy has 30 years experience. Calculated from a graduation year of 1996, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Loewy provides treatments such as psychotherapy, 45 minutes and psychotherapy, 30 minutes. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Loewy. 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.