Psychologist | Clinical Psychology

Dr. Mark Clay Williams, PHD

989 Orienta Ave, Life Care Center Of Altamonte, Altamonte Springs, Florida, 32701

About Dr. Mark Clay Williams

Dr. Mark Clay Williams is a psychologist based in Altamonte Springs, Florida who is specialized in Clinical Psychology. Active license number of Dr. Mark Clay Williams is PY0003957 for Clinical Psychology in Florida. His current practice location is 989 Orienta Ave, Life Care Center Of Altamonte, Altamonte Springs. Patients can contact him at 407-831-3446. Dr. Mark Clay Williams, PHD, specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1619998416.

Dr. Mark Clay Williams 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.

Practice Information

Dr. Mark Clay Williams'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. Mark Clay Williams
Specialization Clinical Psychology
Credentials PHD
Gender Male
Practice Address: 989 Orienta Ave, Life Care Center Of Altamonte
Altamonte Springs, FL - 32701

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.

NPI Number1619998416
NPI Enumeration Date: 21 Jul, 2006
NPI Last Update On: 08 Jul, 2007

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. Mark Clay Williams are as mentioned below.

License NumberSpecializationStateStatus
PY0003957Clinical Psychology FloridaPrimary

Mailing Address

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

Dr. Mark Clay Williams
3851 Ethan Lane,
Orlando, FL - 32814-6567
Phone: 407-647-8437
Fax: 407-647-8437

Book an Appointment with Dr. Mark Clay Williams

To schedule an appointment, contact Dr. Mark Clay Williams at 989 Orienta Ave, Life Care Center Of Altamonte, Altamonte Springs, Florida or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Mark Clay Williams:

Dr. Mark Clay Williams is a psychologist specializing in Clinical Psychology. He 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.

Yes, Dr. Mark Clay Williams 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. Mark Clay Williams practices at 989 Orienta Ave, Life Care Center Of Altamonte, Altamonte Springs, Florida, 32701.

To schedule an appointment with Dr. Mark Clay Williams, please contact the office at 407-831-3446.

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