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

Mark Allan Harrison, MD

Individual provider Nuclear Cardiology Physician · NPI 1285799585

Mark Allan Harrison, MD is a Cardiovascular Disease (Cardiology) in Poughkeepsie, New York. Graduated from Icahn School of Medicine at Mount Sinai in 2005, 21 years ago. Practices with Hudson Valley Cardiovascular Practice PC, a 67-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
21
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
NY
In the registry since
2006
Specialties on file
2
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

1 Columbia St Ste 200
Poughkeepsie, NY 12601
Phone: (845) 473-1188
Fax: (845) 485-8937
Show map & directions

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

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 249392 (NY)
Nuclear Cardiology Physician Taxonomy 207UN0901X · Licence 249392 (NY)

Record details

NPI number1285799585
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 27, 2006
Last updated in NPPESSeptember 7, 2018
Mailing address1 Columbia St, Suite 200, Poughkeepsie, NY 12601-3923

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Also practisesINTERNAL MEDICINE
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 2005 (21 years in practice)
Group practice Hudson Valley Cardiovascular Practice Pc — 67 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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