Psychologist | Clinical Psychology

Mary M Leonard, PHD

1509 Ritchie Hwy Ste F, Arnold, Maryland, 21012-2742

About Mary M Leonard

Mary M Leonard is a psychologist based in Arnold, Maryland who is specialized in Clinical Psychology. Active license number of Mary M Leonard is 01090 for Clinical Psychology in Maryland. Her current practice location is 1509 Ritchie Hwy Ste F, Arnold. Patients can contact her at 410-757-2077 or can fax her at 410-757-5184. Mary M Leonard, PHD, specializes in Clinical Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1134362908.

Mary M Leonard 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). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Mary M Leonard'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 M Leonard
Specialization Clinical Psychology
Credentials PHD
Gender Female
Practice Address: 1509 Ritchie Hwy Ste F,
Arnold, MD - 21012-2742
Fax 410-757-5184

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.

NPI Number1134362908
NPI Enumeration Date: 09 Apr, 2009
NPI Last Update On: 09 Apr, 2009

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 M Leonard are as mentioned below.

License NumberSpecializationStateStatus
01090Clinical Psychology MarylandPrimary

Other Medical Identifiers

Other professional identifiers associated with Mary M Leonard such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
01090OtherMarylandMD LICENSE

Mailing Address

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

Mary M Leonard
1509 Ritchie Hwy Ste F,
Arnold, MD - 21012-2742
Phone: 410-757-2077
Fax: 410-757-5184

Book an Appointment with Mary M Leonard

To schedule an appointment, contact Mary M Leonard at 1509 Ritchie Hwy Ste F, Arnold, Maryland or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Mary M Leonard:

Mary M Leonard is a psychologist specializing in Clinical Psychology. She 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). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Mary M Leonard 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 M Leonard practices at 1509 Ritchie Hwy Ste F, Arnold, Maryland, 21012-2742.

To schedule an appointment with Mary M Leonard, please contact the office at 410-757-2077.

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