Psychiatrist | 23+ years experience

Mary Helen Hanessian, MD

90 Hospital Dr, Athens, Ohio, 45701-2301

About Mary Helen Hanessian

Mary Helen Hanessian is a psychiatrist based in Athens, Ohio with 23 years of experience in Psychiatry. She completed her graduation from Georgetown University School Of Medicine in 2003. She is also affiliated with hospitals like 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 Helen Hanessian is 35-127047 for Psychiatry in Ohio. Her current practice location is 90 Hospital Dr, Athens. Patients can contact her at 740-593-3682 or can fax her at 740-593-8659. Mary Helen Hanessian, MD, specializes in Psychiatry and her NPI number (Unique professional ID assigned by NPPES) is 1508003294.

Mary Helen Hanessian 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

Mary Helen Hanessian'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 Helen Hanessian
Specialization Psychiatry
Credentials MD
Accepts Medicare Assignment Yes
Experience 23+ years
Medical School Attended Georgetown University School Of Medicine
Graduation Year 2003
Gender Female
Practice Address: 90 Hospital Dr,
Athens, OH - 45701-2301
Fax 740-593-8659

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 4789736372
Enrollment ID I20150908002449
NPI Number1508003294
NPI Enumeration Date: 16 Jan, 2009
NPI Last Update On: 30 Nov, 2015

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 Helen Hanessian are as mentioned below.

License NumberSpecializationStateStatus
35-127047Psychiatry OhioPrimary

Hospital Affiliation

Doctors are affiliated to many hospitals whom they worked with in the past or are presently working with. One doctor can be affiliated to four to five hospitals at a time.
Hospital Name (CCN) StateHospital Type
(360014)Athens, OHAcute Care Hospital

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 Helen Hanessian is associated with along with the number of members in that group.
Organization Name (Group PAC ID) Members
Hopewell Health Centers Inc (9234049990)33

Mailing Address

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

Mary Helen Hanessian
90 Hospital Dr,
Athens, OH - 45701-2301
Phone: 740-593-3682
Fax: 740-593-8659

Book an Appointment with Mary Helen Hanessian

To schedule an appointment, contact Mary Helen Hanessian at 90 Hospital Dr, Athens, Ohio or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Mary Helen Hanessian:

Mary Helen Hanessian is a psychiatrist specializing in Psychiatry. She 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.

Mary Helen Hanessian completed her education (MD) from Georgetown University School Of Medicine in 2003.

Mary Helen Hanessian has approximately 23 years of experience in Psychiatry.

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

Yes, Mary Helen Hanessian 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 Helen Hanessian practices at 90 Hospital Dr, Athens, Ohio, 45701-2301.

To schedule an appointment with Mary Helen Hanessian, please contact the office at 740-593-3682.

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