William Duan is a Stockton, California based psychiatrist who is specialized in Psychiatry. Active license number of William Duan is A189333 for Psychiatry in California. His current practice location is 1800 N California St, Stockton. Patients can reach him at 209-547-5716. William Duan is MD in Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1881334308.
William Duan 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:
William Duan speciality, credentials, practice address, contact phone number and fax are as below.
Patients can call on the below given phone number for appointment.
| Name: | William Duan |
| Specialization: | Psychiatry |
| Gender: | Male |
| Credentials: | MD |
| Practice Address: | 1800 N California St, Stockton,
California, 95204-6019 |
| Phone: | 209-547-5716 |
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: | 1881334308 |
| NPI Enumeration Date: | 31 Mar, 2022 |
| NPI Last Update On: | 24 Jun, 2026 |
Medical Licenses:
Doctors can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for William Duan are as mentioned below.
| License Number | Specialization | State | Status | |
| A189333 | Psychiatry | California | Primary | |
| A189333 | Psychiatric Unit | California | 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: | William Duan
1800 N California St,
Stockton, California |
| Zip: | 95204-6019 |
| Phone Number: | 209-547-5716 |
Patients can reach William Duan at
1800 N California St, Stockton, California or can
call to book an appointment on 209-547-5716.
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 13 July, 2026.