MARIE E. CASTILLO-ALCASID M.D.
NPI 1124135025
Internal Medicine in Fulton, NY
About Marie E. Castillo-alcasid M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIE E. CASTILLO-ALCASID M.D. (NPI 1124135025) is an individual internal medicine provider in Fulton, New York, licensed in New York (237698) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS, is affiliated with Oswego Hospital, and is a graduate of Other (1990).
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
Marie E. Castillo-alcasid 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 Marie Castillo-alcasid reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Oswego, NY 13126
- Reassigned Medicare billing, New York enrollment
- 122 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.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Oswego Hospital
Acute Care Hospitals · Oswego, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 13069 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.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims 4
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 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FULTON, NY 13069
FULTON, NY 13069
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 Marie Castillo-alcasid's NPI number?
The NPI number for Marie Castillo-alcasid is 1124135025. It was assigned to this individual provider in the NPPES registry on August 24, 2006.
Where is Marie Castillo-alcasid located?
Marie Castillo-alcasid practices at 522 S 4th St Suite 500, Fulton, NY 13069. The listed phone number is (315) 598-4740.
What is Marie Castillo-alcasid's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Marie Castillo-alcasid enrolled in Medicare?
Yes. Marie Castillo-alcasid 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 Marie Castillo-alcasid's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marie Castillo-alcasid reassigns Medicare benefits to Oswego Hospital (Oswego, 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 Marie Castillo-alcasid's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Marie Castillo-alcasid affiliated with any hospitals?
According to CMS data, Marie Castillo-alcasid is affiliated with Oswego Hospital.
When was this NPI record last updated?
The NPPES record for Marie Castillo-alcasid was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.