Dr. John Matthew O'brien
PH.D. | Clinical Psychologist | 29+ years Exp
465 Congress St, Ste 700, Portland
Maine, 04101-3539
207-773-2828 207-761-8150
Maps & DirectionsDr. John Matthew O'brien is a Portland, Maine based psychologist with 29 years of experience in Clinical Psychology. He completed his graduation in 1996. 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. John Matthew O'brien is PS932 for Clinical Psychology in Maine. His current practice location is 465 Congress St, Ste 700, Portland. Patients can reach him at 207-773-2828 or can fax him at 207-761-8150. Dr. John Matthew O'brien is PH.D. in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1720083504.
Dr. John Matthew O'brien 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.
Complete Profile:
Dr. John Matthew O'brien 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. John Matthew O'brien |
| Specialization: | Clinical Psychology |
| Gender: | Male |
| Credentials: | PH.D. |
| Experience: | 29+ years |
| Medical School Attended: | Other |
| Graduation Year: | 1996 |
| Accepts Medicare Assignment: | Yes |
| Practice Address: | 465 Congress St, Ste 700, Portland,
Maine, 04101-3539 |
| Phone: | 207-773-2828 |
| Fax: | 207-761-8150 |
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.
| PAC ID: | 2769427020 |
| Enrollment ID: | I20050627001032 |
| NPI Number: | 1720083504 |
| NPI Enumeration Date: | 17 Jun, 2005 |
| NPI Last Update On: | 08 Jul, 2007 |
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. John Matthew O'brien are as mentioned below.
| License Number | Specialization | State | Status | |
| PS932 | Clinical Psychology | Maine | Primary | |
Group Practice:
Group practices are practice of medicine by a group of physicians who share their premises and other resources. Following list states all the group name
with which Dr. John Matthew O'brien is associated with along with the number of members in that group.
| Organization Name (Group PAC ID) | Members |
| Mental Health Associates Of Maine Llc (2961565817) | 3 |
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. John Matthew O'brien
465 Congress St, Ste 700
Portland, Maine |
| Zip: | 04101-3539 |
| Phone Number: | 207-773-2828 |
| Fax Number: | 207-761-8150 |
Patients can reach Dr. John Matthew O'brien at
465 Congress St, Ste 700, Portland, Maine or can
call to book an appointment on 207-773-2828.
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 08 December, 2025.