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

Harold Portnoy, MD

Individual provider Specialist · NPI 1699762310

Harold Portnoy, MD is a Specialist in Southfield, Michigan. Licensed in Michigan. Registered with an NPI since 2005.

Licensed in
MI
In the registry since
2005
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

29275 Northwestern Hwy Ste 100
Southfield, MI 48034-1044
Phone: (248) 784-3708
Fax: (248) 784-3743
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence 4301022482 (MI)

Record details

NPI number1699762310
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 29, 2005
Last updated in NPPESJuly 13, 2026
Mailing address29275 Northwestern Hwy, Ste 100, Southfield, MI 48034-1044

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