John Trojanowski is a Oakland, California based psychologist who is specialized in Clinical Psychology. Active license number of John Trojanowski is PSY31863 for Clinical Psychology in California. His current practice location is 1425 Leimert Blvd Ste 300, Oakland. Patients can reach him at 510-239-7024. John Trojanowski is PSYD in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1073804910.
John Trojanowski is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.
Complete Profile:
John Trojanowski speciality, credentials, practice address, contact phone number and fax are as below.
Patients can call on the below given phone number for appointment.
| Name: | John Trojanowski |
| Specialization: | Clinical Psychology |
| Gender: | Male |
| Credentials: | PSYD |
| Practice Address: | 1425 Leimert Blvd Ste 300, Oakland,
California, 94602-1808 |
| Phone: | 510-239-7024 |
Professional Identification Codes:
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS).
NPI details are as mentioned below.
| NPI Number: | 1073804910 |
| NPI Enumeration Date: | 26 Apr, 2011 |
| NPI Last Update On: | 12 Mar, 2023 |
Medical Licenses:
Doctors can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for John Trojanowski are as mentioned below.
| License Number | Specialization | State | Status | |
| PSY31863 | Clinical Psychology | California | Primary | |
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | John Trojanowski
1400 Shattuck Ave Ste 12-216,
Berkeley, California |
| Zip: | 94709-1411 |
| Phone Number: | 510-239-7024 |
Patients can reach John Trojanowski at
1425 Leimert Blvd Ste 300, Oakland, California or can
call to book an appointment on 510-239-7024.
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 08 December, 2025.