Mark David Ewalt, M.D.
Molecular Genetic Pathology (Pathology) Physician · New York, NY
Mark David Ewalt, M.D. is a molecular genetic pathology (pathology) physician with a practice address in New York, New York, and NPI 1497998512, issued on Apr 20, 2009. Check the license on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Mark David Ewalt
- Credential
- M.D.
- Primary taxonomy
- Molecular Genetic Pathology (Pathology) Physician 207ZP0007X
- License numbers
- DR.0058760 CO
A121762 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1275 York Avenue, New York, NY 10065
- Phone
- (212) 639-8137
- Enumerated
- Apr 20, 2009
- Record last updated
- Aug 25, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20201023001759); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 2009
- Entity
- Type 1 · individual
8 nearest molecular genetic pathology (pathology) physician records → All 17 in New York → Look up another NPI →
Also registered at 1275 York Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicole Barkan, CPNP AC/PCPediatric Nurse Practitioner1235401191
- Paul Cohen, M.D.Cardiovascular Disease Physician1649306226
- Eden Davis, PAPhysician Assistant1538417159
- Neisha Dejesus, PA-CPhysician Assistant1457596017
- Julie Ewy, CPNPPediatric Nurse Practitioner1871712125
- Christina Ferraro, NURSE PRACTITIONERFamily Nurse Practitioner1538679055
Verify Mark David Ewalt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the ProfessionsCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 76.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Memorial Pathology GroupNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark David Ewalt among 17 molecular genetic pathology (pathology) physician records in New York
Mark David Ewalt, M.D. is one of 17 molecular genetic pathology (pathology) physician records with a practice address in New York. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 47% of them.
- NPI issued2009 · 47% of these records are older, 41% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2009 · median 2009 among the 10 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0007X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Molecular Genetic Pathology (Pathology) Physician providers in New York
There are 17 molecular genetic pathology (pathology) physician records in New York.
All 17 in New York → Every provider in New York → Molecular Genetic Pathology (Pathology) Physician nationwide →
The 8 molecular genetic pathology (pathology) physician records with the nearest ZIP codes
- Jamal Benhamida, M.D.New York, NY 100651790051746
- James Solomon, MD PHDNew York, NY 100651104373109
- Chad Vanderbilt, M.D.New York, NY 100651790040889
- Audrey Roy, MD/MSNew York, NY 100751528748266
- Tatyana Gindin, M.D.New York, NY 100321740449644
- Mahesh Mansukhani, M.D.New York, NY 100321477692556
- Seung Ha NamNew York, NY 100211396165775
- Paolo Santiago Ocampo, M.D., PH.D.New York, NY 100161497101810
Common questions
What is Mark David Ewalt, M.D.'s NPI number?
Mark David Ewalt, M.D.'s National Provider Identifier (NPI) is 1497998512, issued on Apr 20, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mark David Ewalt, M.D. located?
The NPPES record lists a practice address at 1275 York Avenue, New York, NY, 10065. Phone: (212) 639-8137. Providers update this record themselves, so call before visiting.
How can I verify Mark David Ewalt, M.D.'s license?
Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Mark David Ewalt, M.D.'s MIPS final score?
The 2023 MIPS final score is 76.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.