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

Dr. Mark Henry Alon, MD

Individual provider Hospitalist Physician · NPI 1972910164

Dr. Mark Henry Alon, MD is a Hospitalist in White Plains, New York. Qualified in 2009, 17 years ago. Practices with Icahn School of Medicine at Mount Sinai, a 2,791-clinician group and accepts Medicare assignment. Licensed in New York and Wisconsin.

Years since qualifying
17
Licensed in
NY, WI
In the registry since
2014
Specialties on file
3
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

41 E Post Rd
White Plains, NY 10601-4699
Phone: (914) 681-0600
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 311716-01 (NY)
Hospitalist Physician Taxonomy 208M00000X · Licence 66871 (WI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 311716-01 (NY)

Record details

NPI number1972910164
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 20, 2014
Last updated in NPPESJanuary 9, 2026
Certification dateJanuary 9, 2026
Mailing address41 E Post Rd, White Plains, NY 10601-4699

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Icahn School Of Medicine At Mount Sinai — 2791 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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