Dr. Mary Margaret Hennessy is a Marshfield, Wisconsin based psychiatrist who is specialized in Psychiatry. Active license number of Dr. Mary Margaret Hennessy is 56027 for Psychiatry in Wisconsin. Her current practice location is 1000 N Oak Ave, Marshfield. Patients can reach her at 715-387-5511. Dr. Mary Margaret Hennessy is M.D. in Psychiatry and her NPI number (Unique professional ID assigned by NPPES) is 1104980119.
Dr. Mary Margaret Hennessy 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. Mary Margaret Hennessy 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. Mary Margaret Hennessy |
| Specialization: | Psychiatry |
| Gender: | Female |
| Credentials: | M.D. |
| Practice Address: | 1000 N Oak Ave, Marshfield,
Wisconsin, 54449-5703 |
| Phone: | 715-387-5511 |
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: | 1104980119 |
| NPI Enumeration Date: | 21 Dec, 2006 |
| NPI Last Update On: | 16 Sep, 2011 |
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. Mary Margaret Hennessy are as mentioned below.
| License Number | Specialization | State | Status | |
| 56027 | Psychiatry | Wisconsin | Primary | |
| 33238 | Psychiatry | Minnesota | Secondary | |
| 33238 | Child & Adolescent | Minnesota | 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: | Dr. Mary Margaret Hennessy
1000 N Oak Ave,
Marshfield, Wisconsin |
| Zip: | 54449-5703 |
| Phone Number: | 715-387-5511 |
Patients can reach Dr. Mary Margaret Hennessy at
1000 N Oak Ave, Marshfield, Wisconsin or can
call to book an appointment on 715-387-5511.
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 13 October, 2025.