Dr. Alexander Gregers Posell is a Brooklyn, New York based psychiatrist who is specialized in Psychiatry. Active license number of Dr. Alexander Gregers Posell is 319892 for Psychiatry in New York. His current practice location is 189 S 9th St Apt 20, Brooklyn. Patients can reach him at 213-393-3711. Dr. Alexander Gregers Posell is MD in Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1598384315.
Dr. Alexander Gregers Posell 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.
Complete Profile:
Dr. Alexander Gregers Posell 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. Alexander Gregers Posell |
| Specialization: | Psychiatry |
| Gender: | Male |
| Credentials: | MD |
| Practice Address: | 189 S 9th St Apt 20, Brooklyn,
New York, 11211-6159 |
| Phone: | 213-393-3711 |
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: | 1598384315 |
| NPI Enumeration Date: | 11 Apr, 2020 |
| NPI Last Update On: | 11 Dec, 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. Alexander Gregers Posell are as mentioned below.
| License Number | Specialization | State | Status | |
| 319892 | Psychiatry | New York | Primary | |
| 319892 | Forensic Psychiatry | New York | Secondary | |
Other Medical Identifiers:
Other legacy medical identifiers associated with Dr. Alexander Gregers Posell such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
| Identifier | Type | State | Issuer |
| 07808491 | Medicaid | New York | |
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. Alexander Gregers Posell
189 S 9th St Apt 20,
Brooklyn, New York |
| Zip: | 11211-6159 |
| Phone Number: | 646-397-3017 |
| Fax Number: | 646-585-4389 |
Patients can reach Dr. Alexander Gregers Posell at
189 S 9th St Apt 20, Brooklyn, New York or can
call to book an appointment on 213-393-3711.
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 09 March, 2026.