Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Donald J Johannessen, MD

Individual provider Geriatric Psychiatry Physician · NPI 1295800142

Donald J Johannessen, MD is a Geriatric Psychiatry Physician in New York, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

425 E 79th St Ste 1E
New York, NY 10021-1037
Phone: (212) 249-4739
Fax: (212) 737-5574
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Geriatric Psychiatry Physician (primary) Taxonomy 2084P0805X · Licence 173503 (NY)

Record details

NPI number1295800142
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 22, 2006
Last updated in NPPESJuly 8, 2007

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