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

Dr. Mark Alexander, MD

Individual provider Internal Medicine Physician · NPI 1144433996

Dr. Mark Alexander, MD is an Internal Medicine Physician in White Plains, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2007
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

25 Rockledge Ave Ph 16
White Plains, NY 10601-1200
Phone: (914) 683-0805
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 148692 (NY)

Record details

NPI number1144433996
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 8, 2007
Last updated in NPPESJuly 8, 2007
Mailing address25 Rockledge Ave Ph 16, White Plains, NY 10601-1200

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