DR. MICHAEL JOSEPH DEMARIA M.D.
NPI 1790780724
Internal Medicine - Gastroenterology in Glen Cove, NY
About Dr. Michael Joseph Demaria M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL JOSEPH DEMARIA M.D. (NPI 1790780724) is an individual gastroenterology provider in Glen Cove, New York, licensed in New York (160671) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS, is affiliated with Nassau University Medical Center, and is a graduate of Other (1983).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Michael Joseph Demaria M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Michael Demaria reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Westbury, NY 11590
- Reassigned Medicare billing, New York enrollment
- 107 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Nassau University Medical Center
Acute Care Hospitals · East Meadow, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11542 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 6
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Michael Demaria's NPI number?
The NPI number for Michael Demaria is 1790780724. It was assigned to this individual provider in the NPPES registry on June 16, 2005.
Where is Michael Demaria located?
Michael Demaria practices at 10 Medical Plz Suite 303, Glen Cove, NY 11542. The listed phone number is (516) 676-0239.
What is Michael Demaria's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Michael Demaria enrolled in Medicare?
Yes. Michael Demaria is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Michael Demaria's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Demaria reassigns Medicare benefits to Harmony Health Care Long Island (Westbury, NY). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Demaria's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Michael Demaria affiliated with any hospitals?
According to CMS data, Michael Demaria is affiliated with Nassau University Medical Center.
When was this NPI record last updated?
The NPPES record for Michael Demaria was last updated on November 9, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Michael Joseph Demaria, M.D. · NPI 1790780724
Gastroenterology physician in Glen Cove, New York. Individual provider, active in the CMS NPPES registry since June 16, 2005.
## Identity
- **NPI:** 1790780724 (Entity type: Individual)
- **Enumerated:** June 16, 2005
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 160671 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 10 MEDICAL PLZ, SUITE 303, Glen Cove, NY 11542-2101
- **Phone:** (516) 676-0239 · **Fax:** (516) 676-0956
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Harmony Health Care Long Island (NPI 1215241302, Westbury, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1983
## Record status
- **NPPES last updated:** November 9, 2012
- **Other identifiers:** Medicare UPIN E94643 (NY); Medicare UPIN E31E471 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1790780724) · Data from the CMS NPPES public registry.