DR. EDDIE EUGENIO MAS MD
NPI 1154315554
Specialist in West Seneca, NY
About Dr. Eddie Eugenio Mas Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. EDDIE EUGENIO MAS MD (NPI 1154315554) is an individual specialist in West Seneca, New York, licensed in New York (187156) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Of Buffalo, and is a graduate of Other (1987).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 11
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. Eddie Eugenio Mas Md 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 Reassignments
3Medicare enrollment records show Eddie Mas reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Buffalo, NY 14220
- Reassigned Medicare billing, New York enrollment
- 499 clinicians in this Medicare group
Cheektowaga, NY 14225
- Reassigned Medicare billing, New York enrollment
- 515 clinicians in this Medicare group
Buffalo, NY 14203
- Reassigned Medicare billing, New York enrollment
- 676 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.
Mercy Hospital Of Buffalo
Acute Care Hospitals · Buffalo, NYOther Providers at the Same Location NPPES
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 Eddie Mas's NPI number?
The NPI number for Eddie Mas is 1154315554. It was assigned to this individual provider in the NPPES registry on August 31, 2005.
Where is Eddie Mas located?
Eddie Mas practices at 172 Slade Ave, West Seneca, NY 14224. The listed phone number is (716) 823-3300.
What is Eddie Mas's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Eddie Mas enrolled in Medicare?
Yes. Eddie Mas 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 organizations bill Medicare for Eddie Mas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Eddie Mas reassigns Medicare benefits to 3 organizations: Mercy Hospital Of Buffalo (Buffalo, NY), Sisters Of Charity Hospital Of Buffalo New York (Cheektowaga, NY) and Kaleida Health (Buffalo, NY). Each 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 Eddie Mas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Eddie Mas affiliated with any hospitals?
According to CMS data, Eddie Mas is affiliated with Mercy Hospital Of Buffalo.
When was this NPI record last updated?
The NPPES record for Eddie Mas was last updated on September 22, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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. Eddie Eugenio Mas, MD · NPI 1154315554
Specialist provider in West Seneca, New York. Individual provider, active in the CMS NPPES registry since August 31, 2005.
## Identity
- **NPI:** 1154315554 (Entity type: Individual)
- **Enumerated:** August 31, 2005
- **Primary specialty:** Specialist · taxonomy 174400000X
- **State license:** 187156 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 172 SLADE AVE, West Seneca, NY 14224-2643
- **Phone:** (716) 823-3300 · **Fax:** (716) 823-0757
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Mercy Hospital Of Buffalo (NPI 1144262908, Buffalo, NY); Sisters Of Charity Hospital Of Buffalo New York (NPI 1043455199, Cheektowaga, NY); Kaleida Health (NPI 1427870070, Buffalo, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1987
## Record status
- **NPPES last updated:** September 22, 2011
- **Other identifiers:** Other 060413000064 (NY); Other RB5383; Other 0001011234 (NY); and 8 more
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Source: [NPI Profile](https://npiprofile.com/npi/1154315554) · Data from the CMS NPPES public registry.