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

Mark Lieb, MD

Individual provider Cardiovascular Disease Physician · NPI 1619921749

Mark Lieb, MD is a Cardiovascular Disease (Cardiology) in Mount Kisco, New York. Graduated from Boston University School of Medicine in 1988, 38 years ago. Practices with Optum Medical Care PC, a 1,018-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
38
Trained at
Boston University School of Medicine
Licensed in
NY
In the registry since
2006
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

90 S Bedford Rd Care Mount Medical Pc
Mount Kisco, NY 10549-3412
Phone: (914) 241-1050
Fax: (914) 242-1516
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Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 180753 (NY)

Record details

NPI number1619921749
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 22, 2006
Last updated in NPPESNovember 15, 2016
Mailing address110 South Bedford Road, Care Mount Medical Pc, Mount Kisco, NY 10549-3412

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolBOSTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1988 (38 years in practice)
Group practice Optum Medical Care Pc — 1018 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in Mount Kisco