Psychologist | General Psychology | 43+ years experience

Dr. Fred Barry Krellenstein, PSY.D.

8 Holly Dr, Syosset, New York, 11791-5718

About Dr. Fred Barry Krellenstein

Dr. Fred Barry Krellenstein is a psychologist based in Syosset, New York with 43 years of experience in General Psychology. He completed his graduation in 1983. He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Dr. Fred Barry Krellenstein is 7790 for General Psychology in New York. His current practice location is 8 Holly Dr, Syosset. Patients can contact him at 516-921-3943 or can fax him at 516-682-8210. Dr. Fred Barry Krellenstein, PSY.D., specializes in General Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1538258058.

Dr. Fred Barry Krellenstein is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, he performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. He 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.

Practice Information

Dr. Fred Barry Krellenstein's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Dr. Fred Barry Krellenstein
Specialization General Psychology
Credentials PSY.D.
Accepts Medicare Assignment Yes
Experience 43+ years
Graduation Year 1983
Gender Male
Practice Address: 8 Holly Dr,
Syosset, NY - 11791-5718
Fax 516-682-8210

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

PAC ID 0749422376
Enrollment ID I20130812000540
NPI Number1538258058
NPI Enumeration Date: 12 Oct, 2006
NPI Last Update On: 10 Jan, 2012

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Dr. Fred Barry Krellenstein are as mentioned below.

License NumberSpecializationStateStatus
7790General Psychology New YorkPrimary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Dr. Fred Barry Krellenstein
8 Holly Dr,
Syosset, NY - 11791-5718
Phone: 516-921-3943
Fax: 516-682-8210

Book an Appointment with Dr. Fred Barry Krellenstein

To schedule an appointment, contact Dr. Fred Barry Krellenstein at 8 Holly Dr, Syosset, New York or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Fred Barry Krellenstein:

Dr. Fred Barry Krellenstein is a psychologist specializing in General Psychology. He is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, he performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. He 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.

Dr. Fred Barry Krellenstein has approximately 43 years of experience in General Psychology.

Yes, Dr. Fred Barry Krellenstein accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.

Yes, Dr. Fred Barry Krellenstein is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Dr. Fred Barry Krellenstein practices at 8 Holly Dr, Syosset, New York, 11791-5718.

To schedule an appointment with Dr. Fred Barry Krellenstein, please contact the office at 516-921-3943.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.