Dr. Martha Sue Klassen
PSYD, BCBA | Psychologist | 15+ years Exp
5212 Katella Ave Ste 104, Los Alamitos
California, 90720-6829
714-490-3428 562-493-1684
Maps & DirectionsDr. Martha Sue Klassen is a Los Alamitos, California based psychologist with 15 years of experience in Psychology. She completed her graduation in 2010. She accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Dr. Martha Sue Klassen is PSY29865 for Clinical Psychology in California. Her current practice location is 5212 Katella Ave Ste 104, Los Alamitos. Patients can reach her at 714-490-3428 or can fax her at 562-493-1684. Dr. Martha Sue Klassen is PSYD, BCBA in Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1700135548.
Dr. Martha Sue Klassen is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, she performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. She can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.
Complete Profile:
Dr. Martha Sue Klassen speciality, credentials, practice address, contact phone number and fax are as below.
Patients can call on the below given phone number for appointment.
| Name: | Dr. Martha Sue Klassen |
| Specialization: | Psychology |
| Gender: | Female |
| Credentials: | PSYD, BCBA |
| Experience: | 15+ years |
| Medical School Attended: | Other |
| Graduation Year: | 2010 |
| Accepts Medicare Assignment: | Yes |
| Practice Address: | 5212 Katella Ave Ste 104, Los Alamitos, California, 90720-6829 |
| Phone: | 714-490-3428 |
| Fax: | 562-493-1684 |
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.
| PAC ID: | 7315202025 |
| Enrollment ID: | I20181109001089 |
| NPI Number: | 1700135548 |
| NPI Enumeration Date: | 07 Sep, 2012 |
| NPI Last Update On: | 21 Mar, 2025 |
Medical Licenses:
Doctors can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Dr. Martha Sue Klassen are as mentioned below.
| License Number | Specialization | State | Status | |
| PSY29865 | Clinical Psychology | California | Primary | |
| Behavioral Analyst | | Secondary | |
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | Dr. Martha Sue Klassen 5212 Katella Ave Ste 104, Los Alamitos, California |
| Zip: | 90720-6829 |
| Phone Number: | 714-490-3428 |
| Fax Number: | 562-493-1684 |
Patients can reach Dr. Martha Sue Klassen at
5212 Katella Ave Ste 104, Los Alamitos, California or can
call to book an appointment on 714-490-3428.
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 08 December, 2025.