DEMETRIUS MOUTSIAKIS M.D., M.P.H.
NPI 1861717860
General Practice in Farmingville, NY
About Demetrius Moutsiakis M.d., M.p.h. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DEMETRIUS MOUTSIAKIS M.D., M.P.H. (NPI 1861717860) is an individual general practice provider in Farmingville, New York, licensed in New York (212315-1) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS and is a graduate of State University Of New York At Stony Brook, School Of Medicine (1997).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Demetrius Moutsiakis M.d., M.p.h. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Demetrius Moutsiakis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Farmingville, NY 11738
- Reassigned Medicare billing, New York enrollment
- 3 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.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FARMINGVILLE, NY 11738
FARMINGVILLE, NY 11738
FARMINGVILLE, NY 11738
FARMINGVILLE, NY 11738
FARMINGVILLE, NY 11738
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 Demetrius Moutsiakis's NPI number?
The NPI number for Demetrius Moutsiakis is 1861717860. It was assigned to this individual provider in the NPPES registry on April 1, 2010.
Where is Demetrius Moutsiakis located?
Demetrius Moutsiakis practices at 400 Horseblock Rd, Farmingville, NY 11738. The listed phone number is (631) 698-1552.
What is Demetrius Moutsiakis's specialty?
The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.
Is Demetrius Moutsiakis enrolled in Medicare?
Yes. Demetrius Moutsiakis is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Demetrius Moutsiakis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Demetrius Moutsiakis reassigns Medicare benefits to Saw Medical Services PC (Farmingville, 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 Demetrius Moutsiakis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Demetrius Moutsiakis was last updated on April 1, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Demetrius Moutsiakis, M.D., M.P.H. · NPI 1861717860
General Practice physician in Farmingville, New York. Individual provider, active in the CMS NPPES registry since April 1, 2010.
## Identity
- **NPI:** 1861717860 (Entity type: Individual)
- **Enumerated:** April 1, 2010
- **Primary specialty:** General Practice · taxonomy 208D00000X
- **State license:** 212315-1 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 400 HORSEBLOCK RD, Farmingville, NY 11738-1252
- **Phone:** (631) 698-1552
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Saw Medical Services PC (NPI 1922373380, Farmingville, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York At Stony Brook, School Of Medicine, class of 1997
## Record status
- **NPPES last updated:** April 1, 2010
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Source: [NPI Profile](https://npiprofile.com/npi/1861717860) · Data from the CMS NPPES public registry.