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

Dr. Mark Nathaniel Nusbaum, PHD

Individual provider Psychologist · NPI 1154340636

Dr. Mark Nathaniel Nusbaum, PHD is a Clinical Psychologist in Columbia, Maryland. Qualified in 1988, 38 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in Maryland.

Years since qualifying
38
Licensed in
MD
In the registry since
2006
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

9841 Broken Land Pkwy Ste 116
Columbia, MD 21046-3060
Phone: (301) 490-0778
Fax: (410) 672-4011
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 2675 (MD)

Record details

NPI number1154340636
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJuly 18, 2006
Last updated in NPPESJuly 6, 2024
Certification dateJuly 6, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1988 (38 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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