Psychiatrist

Dr. Gregory Peter Cejas, MD

4444 Forest Park Ave, Ste 2600, Saint Louis, Missouri, 63108-2212

About Dr. Gregory Peter Cejas

Dr. Gregory Peter Cejas is a psychiatrist based in Saint Louis, Missouri who is specialized in Psychiatry. Active license number of Dr. Gregory Peter Cejas is 2019022607 for Psychiatry in Missouri. His current practice location is 4444 Forest Park Ave, Ste 2600, Saint Louis. Patients can contact him at 314-286-1700 or can fax him at 314-286-1730. Dr. Gregory Peter Cejas, MD, specializes in Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1225558802.

Dr. Gregory Peter Cejas specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Practice Information

Dr. Gregory Peter Cejas'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. Gregory Peter Cejas
Specialization Psychiatry
Credentials MD
Gender Male
Practice Address: 4444 Forest Park Ave, Ste 2600
Saint Louis, MO - 63108-2212
Fax 314-286-1730

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 Number1225558802
NPI Enumeration Date: 23 Jun, 2017
NPI Last Update On: 15 Apr, 2025

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. Gregory Peter Cejas are as mentioned below.

License NumberSpecializationStateStatus
2019022607Psychiatry MissouriPrimary

Other Medical Identifiers

Other professional identifiers associated with Dr. Gregory Peter Cejas such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
200061871MedicaidMissouri

Mailing Address

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

Dr. Gregory Peter Cejas
Po Box 7412011,
Chicago, IL - 60674-2011
Phone: 314-286-1700
Fax: 314-286-1730

Book an Appointment with Dr. Gregory Peter Cejas

To schedule an appointment, contact Dr. Gregory Peter Cejas at 4444 Forest Park Ave, Ste 2600, Saint Louis, Missouri or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Gregory Peter Cejas:

Dr. Gregory Peter Cejas is a psychiatrist specializing in Psychiatry. He specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Yes, Dr. Gregory Peter Cejas 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. Gregory Peter Cejas practices at 4444 Forest Park Ave, Ste 2600, Saint Louis, Missouri, 63108-2212.

To schedule an appointment with Dr. Gregory Peter Cejas, please contact the office at 314-286-1700.

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