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

Individual provider Hematology & Oncology Physician · NPI 1922215680

Dr. Mark Chaitowitz, MD is a Hematology/Oncology in Bronx, New York. Qualified in 1997, 29 years ago. Practices with Montefiore Medical Center, a 2,796-clinician group and offers telehealth. Licensed in New York.

Years since qualifying
29
Licensed in
NY
In the registry since
2007
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

3411 Wayne Ave 1st Fl
Bronx, NY 10467-2509
Phone: (718) 920-4137
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 253878-1 (NY)

Record details

NPI number1922215680
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 16, 2007
Last updated in NPPESApril 14, 2017

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolOTHER
Graduated 1997 (29 years in practice)
Group practice Montefiore Medical Center — 2796 clinicians
Accepts Medicare assignment Not indicated
TelehealthOffers telehealth services

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