Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Marcel Mayas, MD

Individual provider Psychiatry Physician · NPI 1720035256

Dr. Marcel Mayas, MD practises Psychiatry in North Baldwin, New York. Qualified in 1979, 47 years ago. Practices with South Nassau Communities Hospital, an 18-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
47
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

625 Grant Ave
North Baldwin, NY 11510-1331 Not confirmed with CMS for 18 years — call before visiting
Phone: (516) 867-5747
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 158472 (NY)

Record details

NPI number1720035256
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 30, 2006
Last updated in NPPESApril 3, 2008

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolOTHER
Graduated 1979 (47 years in practice)
Group practice South Nassau Communities Hospital — 18 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients13
Services billed 14 a service is one billed item, such as a visit, a test or a procedure
Average patient age65

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at South Nassau Communities Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 18 clinicians in the practice; 12 are shown here.

Other providers in North Baldwin