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

Martha Holmes Ruff, PHD

Individual provider Clinical Psychologist · NPI 1609140136

Martha Holmes Ruff, PHD is a Clinical Psychologist in New York, New York. Licensed in New York. Registered with an NPI since 2012.

Licensed in
NY
In the registry since
2012
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1727 Amsterdam Ave
New York, NY 10031-4611 Not confirmed with CMS for 14 years — call before visiting
Phone: (212) 694-9200
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 009235-1 (NY)

Record details

NPI number1609140136
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedMarch 1, 2012
Last updated in NPPESMarch 1, 2012

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