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

Dr. Mark A Rush, PHD

Individual provider Addiction (Substance Use Disorder) Psychologist · NPI 1134119126

Dr. Mark A Rush, PHD is an Addiction (Substance Use Disorder) Psychologist in Denver, Colorado. Licensed in Colorado. Registered with an NPI since 2005.

Licensed in
CO
In the registry since
2005
Specialties on file
6
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

673 Grant St
Denver, CO 80203-3506
Phone: (303) 949-6297
Fax: (303) 464-1413
Show map & directions

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

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 1934 (CO)
Addiction (Substance Use Disorder) Psychologist Taxonomy 103TA0400X · Licence 1934 (CO)
Cognitive & Behavioral Psychologist Taxonomy 103TB0200X · Licence 1934 (CO)
Clinical Psychologist Taxonomy 103TC0700X · Licence 1934 (CO)
Counseling Psychologist Taxonomy 103TC1900X · Licence 1934 (CO)
Family Psychologist Taxonomy 103TF0000X · Licence 1934 (CO)

Record details

NPI number1134119126
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedOctober 21, 2005
Last updated in NPPESJuly 13, 2026

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