Psychiatrist | Addiction Psychiatry | 47+ years experience

Mary Louisa Barnhart, MD

10 Water St, Suite 306, Waterville, Maine, 04901-6559

About Mary Louisa Barnhart

Mary Louisa Barnhart is a psychiatrist based in Waterville, Maine with 47 years of experience in Addiction Psychiatry. She completed her graduation from University Of Pittsburgh School Of Medicine in 1979. She accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Mary Louisa Barnhart is 01440 for Addiction Psychiatry in Maine. Her current practice location is 10 Water St, Suite 306, Waterville. Patients can contact her at 207-861-3488 or can fax her at 207-861-3470. Mary Louisa Barnhart, MD, specializes in Addiction Psychiatry and her NPI number (Unique professional ID assigned by NPPES) is 1811055353.

Mary Louisa Barnhart focuses on evaluation and treatment of individuals with alcohol, drug, or other substance-related disorders, and of individuals with dual diagnosis of substance-related and other psychiatric disorders.

Practice Information

Mary Louisa Barnhart'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 Mary Louisa Barnhart
Specialization Addiction Psychiatry
Credentials MD
Accepts Medicare Assignment Yes
Experience 47+ years
Medical School Attended University Of Pittsburgh School Of Medicine
Graduation Year 1979
Gender Female
Practice Address: 10 Water St, Suite 306
Waterville, ME - 04901-6559
Fax 207-861-3470

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.

PAC ID 6709874936
Enrollment ID I20040505000565
NPI Number1811055353
NPI Enumeration Date: 05 Dec, 2006
NPI Last Update On: 12 Jan, 2023

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 Mary Louisa Barnhart are as mentioned below.

License NumberSpecializationStateStatus
01440Addiction Psychiatry MainePrimary

Group Practice

Group practices are practice of medicine by a group of healthcare professionals who share their premises and other resources. Following list states all the group name with which Mary Louisa Barnhart is associated with along with the number of members in that group.
Organization Name (Group PAC ID) Members
Mainegeneral Medical Center (1254245715)455

Other Medical Identifiers

Other professional identifiers associated with Mary Louisa Barnhart such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
311000099MedicaidMaine

Mailing Address

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

Mary Louisa Barnhart
Po Box 6283,
China Village, ME - 04926-0283
Phone: 207-649-9394

Book an Appointment with Mary Louisa Barnhart

To schedule an appointment, contact Mary Louisa Barnhart at 10 Water St, Suite 306, Waterville, Maine or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Mary Louisa Barnhart:

Mary Louisa Barnhart is a psychiatrist specializing in Addiction Psychiatry. She focuses on evaluation and treatment of individuals with alcohol, drug, or other substance-related disorders, and of individuals with dual diagnosis of substance-related and other psychiatric disorders.

Mary Louisa Barnhart completed her education (MD) from University Of Pittsburgh School Of Medicine in 1979.

Mary Louisa Barnhart has approximately 47 years of experience in Addiction Psychiatry.

Yes, Mary Louisa Barnhart accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.

Yes, Mary Louisa Barnhart 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.

Mary Louisa Barnhart practices at 10 Water St, Suite 306, Waterville, Maine, 04901-6559.

To schedule an appointment with Mary Louisa Barnhart, please contact the office at 207-861-3488.

Reviews & Feedback

Have you visited Mary Louisa Barnhart? Share your experience to help others looking for a psychiatrist in Waterville, ME.

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