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

Dr. Mark David Ewalt, MD

Individual provider Cytopathology Physician · NPI 1497998512

Dr. Mark David Ewalt, MD is a Pathology in New York, New York. Graduated from Columbia University College of Physicians and Surgeons in 2009, 17 years ago. Practices with Memorial Pathology Group, a 98-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in California and Colorado.

Years since qualifying
17
Trained at
Columbia University College of Physicians and Surgeons
Licensed in
CA, CO
In the registry since
2009
Specialties on file
4
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

1275 York Ave Dept OF Pathology Box #36
New York, NY 10065
Phone: (212) 639-8137
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 8700 Beverly Blvd, West Hollywood, CA 90048-1804 — (310) 423-4551
  • 12605 E 16th Ave, Aurora, CO 80045-2545 — (720) 848-0000

Specialties & licences

Molecular Genetic Pathology (Pathology) Physician (primary) Taxonomy 207ZP0007X · Licence DR.0058760 (CO)
Cytopathology Physician Taxonomy 207ZC0500X · Licence DR.0058760 (CO)
Hematology (Pathology) Physician Taxonomy 207ZH0000X · Licence A121762 (CA)
Hematology (Pathology) Physician Taxonomy 207ZH0000X · Licence DR.0058760 (CO)

Record details

NPI number1497998512
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 20, 2009
Last updated in NPPESAugust 25, 2021
Certification dateAugust 25, 2021

Medicare enrollment

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

Medicare specialtyPATHOLOGY
Medical schoolCOLUMBIA UNIVERSITY COLLEGE OF PHYSICIANS AND SURGEONS
Graduated 2009 (17 years in practice)
Group practice Memorial Pathology Group — 98 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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