National Provider Identifier Database

MARY D JOHNSTON, MD – NPI #1881670958
Geriatric Psychiatry

Geriatric Psychiatry is a subspecialty with psychiatric expertise in prevention, evaluation, diagnosis and treatment of mental and emotional disorders in the elderly, and improvement of psychiatric care for healthy and ill elderly patients.


Contact Information

MARY D JOHNSTON, MD
600 N WOLFE STREET
JOHNS HOPKINS UNIVERSITY SCHOOL OF MEDICINE
BALTIMORE, MD21287-7279
Phone: 410-955-5147
Fax:
Website:
Specialty Taxonomy Code
* Geriatric Psychiatry 2084P0805X

* Indicates primary specialty

NPI Profile & details for MARY D JOHNSTON

NPI Number 1881670958
Credentials MD
Entity Individual
Enumeration date 12/20/2005
Last updated 09/18/2012 - About 14 years ago
Sole proprietor1 No
Identifiers
  • NC License #: 9500105
Hospital affiliation n/a

1 A sole proprietor/sole proprietorship is an individual, and as such, is eligible for a single NPI number. The sole proprietor must apply for the NPI number using his or her own Social Security Number (SSN), not an Employer Identification Number (EIN) even if he/she has an EIN.

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